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80-96-list-digest Tuesday, January 5 1999 Volume 02 : Number 438 ======================================================================= Ford Truck Enthusiasts - 1980-1996 Trucks and Vans Visit our web site: http://www.ford-trucks.com/ - - - - - - - - - - - - - - - - - - - - - - - To unsubscribe, send email to: majordomo with the words "unsubscribe 80-96-list-digest" in the body of the message. ======================================================================= In this issue: FTE 80-96 - Electrical stuff... Re: FTE 80-96 - Hub squeak Re: FTE 80-96 - Hard Start Problem with '86 Bronco II Re: FTE 80-96 - ADMIN: TruckTough.com FTE 80-96 - Re: 80-96-list-Electric fuel pump keeps running FTE 80-96 - Re: 80-96-list- Choice of thermostats FTE 80-96 - Re: 80-96- cutting out the computer FTE 80-96 - One Ford to Another(kinda off topic) Re: FTE 80-96 - Thermostat temperatures FTE 80-96 - Choice of thermostats -- Revisited Re: FTE 80-96 - Thermostat temperatures Re: FTE 80-96 - Hard Start Problem with '86 Bronco II RE: FTE 80-96 - Choice of thermostats -- Revisited FTE 80-96 - Re: F150 Brakes > Re: FTE 80-96 - Hard Start Problem with '86 Bronco II FTE 80-96 - Re: Rear Brake Trouble (92 F-150 2WD) Re: FTE 80-96 - Choice of thermostats -- Revisited RE: FTE 80-96 - Re: 80-96-list-Electric fuel pump keeps running Re: FTE 80-96 - Re: F150 Brakes > FTE 80-96 - FTE 80-96 Re: Choice of thermostats, exhaust and performance chips FTE 80-96 - T'stats Re: FTE 80-96 - Hard Start Problem with '86 Bronco II FTE 80-96 - Stuck in Park! RE: FTE 80-96 - Stuck in Park! FTE 80-96 - 3g alternator Re: FTE 80-96 - FTE 80-96 Re: Choice of thermostats, exhaust and performance chips FTE 80-96 - re: Tailight problem RE: FTE 80-96 - Hard Start Problem with '86 Bronco II Re: FTE 80-96 - Re: Rear Brake Trouble (92 F-150 2WD) FTE 80-96 - Mile Marker Hubs FTE 80-96 - EGR Probs & ANTIFREEZE Odor FTE 80-96 - why now? and hotter temps. RE: FTE 80-96 - 3g alternator Re: FTE 80-96 - 1994 Explorer Automatic Hub Problem FTE 80-96 - Bad Pads Re: FTE 80-96 - Bad Pads FTE 80-96 - Spark Plugs... Help! ======================================================================= ---------------------------------------------------------------------- Date: Tue, 05 Jan 1999 13:55:16 +0100 From: "=?iso-8859-1?Q?Bj=F8rnar?= Huse" Subject: FTE 80-96 - Electrical stuff... - -Interesting. I'm new to all this electrical diagnosis, so sorry if I - -ask too many questions, but are all the bulbs suppost to ground? If - -so, how can I find out which one isn't grounding? About the only - -thing I have in the way of electrical equipment is my multimeter. Every electric gizmo/gadget on the truck has to be grounded to work at all (also the engine; even the transfer case, if you have el-activated 4WD). Generally on all US cars, black leads should be ground. On European cars, they may well be brown. Haven't had any japanese, so I can't wouch for them... Some components may be grounded through another's connection (all bulbs in the rear lights may share the same ground connection, for instance). Or; each single component may have a separate ground (most running light relays and aftermarket equipment, for instance). To find out if the ground connection is bad, you could switch your multimeter to ohms and hold it to the connector to black lead (ground) in your blinker lamp assembly and onto chassis ground _with the lights turned off_. The meter should read 0 or close to that. Another way of checking if the ground lead is bad is to use one probe lead from your multimeter, hold it between the connector to the black lead in your blinker lamp and chassis ground _while the lamp is blinking_. If your rear end changes from "Caddy pimp mode" (all lights blinking) to single blinker lamp blinking; your problem is found. Fix the old or install a new ground connection. - -- Bjornar Huse Aalesund, Norway 1 1990 Ford E-250 Club Wagon 7.3 diesel, 3.54, E4OD 1 1994 Ford Escort 1.3 1 1986 Ford Escort 1.6 Wagon Oh, yes, one 1971 wife, too! == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html ------------------------------ Date: Tue, 05 Jan 1999 07:23:55 -0600 From: "Rick Wojciechowski" Subject: Re: FTE 80-96 - Hub squeak Randy wrote: > Rick, > I see one small problem with your suggestion. How do I keep the rear tires > > from making the truck drive over the jack stands??? Hehe. Okay, you caught me too. I was not having a very good day yesterday after being out of work for the previous 11 days. Please forgive my idiocracy. Is that that word? :-) - -- Thanks, Rick Wojo '83 Fsize BRONCO,Stock I-6,"The BROWN BULL",33x12.5x15-Mud Terrains '92 Mstng 5.0L '95 eclipse-Wife's(For Sale) == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html ------------------------------ Date: Tue, 05 Jan 1999 07:49:16 -0600 From: "Rick Wojciechowski" Subject: Re: FTE 80-96 - Hard Start Problem with '86 Bronco II Dave Slotter wrote: > Rick, > > In an EFI engine, doesn't the computer (EEC-IV) control the choke? If so, I > would bet that the computer *does in fact* factor in to this problem and > that I should try swapping back in the old (working?) coolant temperature > sensor and see if that does the trick. That is easy enough. Yeah I forgot you had EFI. Ummm, I can only say that thecomputer handles it, I just don't know how. Anyone know how the EFI handles what the choke's responsibility was ? Be kinda nice to know, cause it will help me out with my Mustang's EFI. - -- Thanks, Rick Wojo '83 Fsize BRONCO,Stock I-6,"The BROWN BULL",33x12.5x15-Mud Terrains '92 Mstng 5.0L '95 eclipse-Wife's(For Sale) == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html ------------------------------ Date: Tue, 05 Jan 1999 08:51:41 -0500 From: Mike Sloane Subject: Re: FTE 80-96 - ADMIN: TruckTough.com I tried to take the survey, but all I got back was an "error processing" message. I think the site needs some work. The questions were a little strange too. Ken Payne wrote: > Dear Ford Truck Enthusiasts list members: > > We have a new sponsor on our web site. Since the beginning, > our practice with web site sponsor has been to make a brief > announcement for 2 days (this is day 1 of 2). > > This sponsor is a little different from the others we've had... > they're having a $1000 giveaway!!!!!! > > TruckTough.com will enter you into their contest simply for > filling out a truck survey. I already did.... :-) > > Their site features: > > Surveys, knowledge, contests, trivia games, and information about > all brands of full size pickup trucks - You could win $1000 dollars! > Also: other prizes, sweepstakes, etc. > > They can be found at: > > http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.trucktough.com/start.cfm > > If you enjoy their site, we would like to you to let them know you > heard about them via Ford Truck Enthusiasts. > > Now returning you to our regularly scheduled program... > > Ken Payne > Admin, Ford Truck Enthusiasts > > == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html - -- - ------------ Mike Sloane Allamuchy NJ (msloane == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html ------------------------------ Date: Tue, 5 Jan 1999 06:01:19 -0800 (PST) From: rokkinhorse Subject: FTE 80-96 - Re: 80-96-list-Electric fuel pump keeps running Mark,that would be me:-) There isn't only the oil pressure interlock switch on mine,but a fuel pump relay and inertia switch.If the relay is stuck,it would continue to run after shutoff,but would have to go through the oil pressure interlock also. If you have an 89 half ton,it's going to be controlled through the EEC4.My advice would be to get a schematic wiring diagram and begin tracing the circuit to the fuel pump starting at the ignition switch.With the key off,the circuit should be dead.If it isn't,you just found your problem. Randy Goolsby,LaCenter,WA.94 Bronco EB 85 F-250 4X4"the Second Amendment guarantees all the others" http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.thewowfactor.com/bigbroncos/detail.cfm?detailid=47 == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html ------------------------------ Date: Tue, 5 Jan 1999 06:22:30 -0800 (PST) From: rokkinhorse Subject: FTE 80-96 - Re: 80-96-list- Choice of thermostats Mike, Personally I think you have too cold a thermostat.For EFI'd engines,the factory thermostat is around 195 degrees.I will be replacing mine with a 195-205 degree thermostat soon. The problem the lower thermostats create is a richer exhaust which to some point the EEC will try to counteract by leaning it out.The newer "lean-burn" engines need the higher operating temperatures to run right.Besides,your heater will work better with the hotter thermostat,kind of a fringe benefit:-) Randy Goolsby,LaCenter,WA.94 Bronco EB 85 F-250 4X4"the Second Amendment guarantees all the others" http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.thewowfactor.com/bigbroncos/detail.cfm?detailid=47 == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html ------------------------------ Date: Tue, 5 Jan 1999 06:41:07 -0800 (PST) From: rokkinhorse Subject: FTE 80-96 - Re: 80-96- cutting out the computer Casey,why in the world would you want to do this? Do you know how the thing even operates on your truck,or is it the fact that if its a computer,it has to be a piece of unreliable crap? Sure,simplicity is good,but so is efficiency.Simplicity will not pay you back in fuel dollars saved,OTOH increased fuel efficiency will.That computer on the EEC4 & 5 trucks monitors your fuel mixture, engine load, temperatures and other data continuously every second it is in operation.Not understanding how something works is not a good reason to throw it in the garbage IMNSHO. Randy Goolsby,LaCenter,WA.94 Bronco EB 85 F-250 4X4"the Second Amendment guarantees all the others" http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.thewowfactor.com/bigbroncos/detail.cfm?detailid=47 == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html ------------------------------ Date: Tue, 05 Jan 1999 09:10:35 -0600 From: "Rick Wojciechowski" Subject: FTE 80-96 - One Ford to Another(kinda off topic) Gang(s), Yesterday morning while backing my Mustang out of my sloped driveway I backed my Mustang into my Bronco. Crunched by my brushguard. So with the 17degrees (Yes even in Alabama) yesterday morning the plastic of the passenger side rear taillight lense shattered all over the place. I need to get a new one. Just called Ford($81.00+tax). Can Anyone help me out. Its a '92 5.0L LX. Oh it was 11 degrees here this morning, but no more plastic all over the place. :-) I checked JCWhitney but all they had in the catalog was the blackout taillight lenses. Please contact me directely so's I don't use up valuable bandwidth on the lists. Any help would be great. - -- Thanks, Rick Wojo '83 Fsize BRONCO,Stock I-6,"The BROWN BULL",33x12.5x15-Mud Terrains '92 Mstng 5.0L '95 eclipse-Wife's(For Sale) == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html ------------------------------ Date: Tue, 5 Jan 1999 10:03:30 -0500 From: "Michael J. Pasznik, Jr." Subject: Re: FTE 80-96 - Thermostat temperatures I'm all ears too. It'll be nice to be able to tell my father something he doesn't know for a change. ;-) And of course, thanks for the info you've already offered up. - -Mike - -----Original Message----- From: Radoje Spasojevic To: 80-96-list Date: Monday, January 04, 1999 11:39 PM Subject: Re: FTE 80-96 - Thermostat temperatures I agree with Andre, it is nice to hear from someone who is not one of us "self-educated" shade tree mechanics...tell us everything there is to know about thermostats, please. Rade - -----Original Message----- From: Andre Roy To: 80-96-list Date: Tuesday, January 05, 1999 2:14 AM Subject: Re: FTE 80-96 - Thermostat temperatures >S Spaulding wrote: >> >> Up until recently, I was Product Engineering Manager for >> Standard-Thomson Corporation. This company is a part of Stant >> Corporation, which falls under the Gates Rubber umbrella. >> > >[snip some _very_ intersting stuff] > >> >> If you made it this far, thanks for reading... >> >Is that all? More! > >Thank you. > >-- >Andre, Somewhere ... >== FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html ------------------------------ Date: Tue, 5 Jan 1999 10:20:17 -0500 From: "Michael J. Pasznik, Jr." Subject: FTE 80-96 - Choice of thermostats -- Revisited Listarians, I braved the weather last night and changed the thermostat back to a higher temp one, on, well, *everybody's* recommendation. All is now fine and good, but I'm now back to where I was when I first started the job. The thing that prompted me to believe that the thermostat was on its way out was that the temperature gauge would fluctuate a good eighth to a quarter of the dial constantly. It didn't matter if I was idling, cruising around town, or on the highway, I could sit there and watch it creep up and then drop back down every 90 seconds or so. Maybe it's normal and I just never noticed it before, but I never remember that happening on any other vehicle I've owned. So I changed the t-stat to the lower temp one and had the same problem, only it was happening at a lower temp. (duh!) Now I'm back to the normal temp t-stat and am still seeing the same thing. So, it's obviously not the thermostat. Would this be considered normal behavior (the truck's, not mine) or is it a sign of something else on the verge of going bad? As always, thanks in advance. - -Mike == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html ------------------------------ Date: Tue, 5 Jan 1999 11:17:26 EST From: FLR150 Subject: Re: FTE 80-96 - Thermostat temperatures I agree with Andre and Rade. The more info we can get, the better educated we "jacklegs" get. I feel like the robot from "Short Circuit" when he says" INPUT, MORE INPUT." Wayne == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html ------------------------------ Date: Tue, 5 Jan 1999 11:17:00 -0500 From: Dave Slotter Subject: Re: FTE 80-96 - Hard Start Problem with '86 Bronco II >Dave Slotter wrote: > >> Rick, >> >> In an EFI engine, doesn't the computer (EEC-IV) control the choke? If so, I >> would bet that the computer *does in fact* factor in to this problem and >> that I should try swapping back in the old (working?) coolant temperature >> sensor and see if that does the trick. That is easy enough. > >Yeah I forgot you had EFI. Ummm, I can only say that thecomputer handles it, I >just don't know how. Anyone know >how the EFI handles what the choke's responsibility was ? >Be kinda nice to know, cause it will help me out with my >Mustang's EFI. Rick, I braved the 4 degree F temperature in Pittsburgh this morning before work and managed to unplug the wiring plug from the coolant temperature sensor without breaking it. (I was afraid about applying force to a cold, hence brittle, object.) I connected it to the old (I think good) coolant temperature sensor and the truck actually started turning over a bit. I didn't put the new sensor in place - I'm not that crazy to stay out in the cold that long - I just let it dangle out of the way of any moving parts. Since the engine actually turned over somewhat after switching the sensor, I believe that I have either improved or fixed one of the variables causing my problem. When we previously ran a Key On Engine Running (KOER) test on the EEC-IV, we got a code which said that the EGR valve isn't working properly. We removed it and cleaned it so that it was able to move better, but we still get that code. Is the EGR valve used to control/assist the choke on an EFI engine? It seems relatively easy to replace on the Bronco, so I plan on replacing it anyway. I just want to know if it is a possible culprit of this problem. - -Dave == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html ------------------------------ Date: Tue, 5 Jan 1999 10:20:16 -0600 From: "Baldwin, Dave" Subject: RE: FTE 80-96 - Choice of thermostats -- Revisited Mike, I had a Pontiac that did this too, so I know what you're talking about. Some comments from the thermostat expert might be good here, but I know that there is some difference between the temperature where the t-stat starts to open and when it is wide open. Also, the t-stat only controls the temperature at the thermostat itself, so if the temp sender is located in a different place, you are observing the temperature at a different place in the engine. I think you would find quite a lot of variance in coolant temperature at different places in the engine. Since cooled water comes in at the front and the hot coolant leaves from the front, it seems that the cylinders at the rear of the block are likely to be running at higher temperatures than the fronts since the impedance to flow is higher in those rear cylinders than in the front. I don't think there is much that you can do to change this, unless you fill the block with concrete like sleddog does! Ford has played some tricks with instrumentation, which continues to this day. People don't like to see fluctuation like you're seeing, so they "adjust" the characteristics of the gauges so that they have a large "flat spot" where the needle position doesn't change between something like 160F and 220F. They employed different circuitry to do this in different models and different years, and in some it is likely that none of this "conditioning" was done. I don't know when this practice started, but at least by the early '90s. By the way, that Pontiac that I had blew a head gasket at 50K miles. Always wondered if that temperature cycling had something to do with it...but I'll never know. Regards, Dave Baldwin Dallas, TX - -----Original Message----- From: Michael J. Pasznik, Jr. [mailto:mjp Sent: Tuesday, January 05, 1999 9:20 AM To: 80-96-list Subject: FTE 80-96 - Choice of thermostats -- Revisited Listarians, I braved the weather last night and changed the thermostat back to a higher temp one, on, well, *everybody's* recommendation. All is now fine and good, but I'm now back to where I was when I first started the job. The thing that prompted me to believe that the thermostat was on its way out was that the temperature gauge would fluctuate a good eighth to a quarter of the dial constantly. It didn't matter if I was idling, cruising around town, or on the highway, I could sit there and watch it creep up and then drop back down every 90 seconds or so. Maybe it's normal and I just never noticed it before, but I never remember that happening on any other vehicle I've owned. So I changed the t-stat to the lower temp one and had the same problem, only it was happening at a lower temp. (duh!) Now I'm back to the normal temp t-stat and am still seeing the same thing. So, it's obviously not the thermostat. Would this be considered normal behavior (the truck's, not mine) or is it a sign of something else on the verge of going bad? As always, thanks in advance. - -Mike == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html ------------------------------ Date: Tue, 05 Jan 1999 11:29:19 -0500 From: EJ Subject: FTE 80-96 - Re: F150 Brakes > dave wrote: The brakes on this truck seem to be very touchy and grab with not alot of pressure. They lock up with minimum force. This is a real problem when driving in the rain or snow! Has anyone found the cure for this. I haven't yet started examining the brakes but was looking for ideas on what to be looking for. - ------------------------------------------------------------------------ Had the same problem on my 92 F-250. My rear axle seals were leaking and saturating the pads, making the brakes real touchy. I know exactly what you mean about the rain and snow, i got to the point that the truck became invisible to me whenever it was wet outside, i would jump in one of the other cars instead. I would also think that your ABS would help control that. Make sure you REALLY DO have ABS. I'm supposed to have ABS on mine, but the previous owner disconnected it. Did a really good job too(*sarcasm*). The light still comes on at start up, and goes right out, making everything seem and appear to be 100 % functional. Course if you climb all the way under the truck and look up under the frame rails, you see that there is now a totally useless piece of equippment on the left hand frame rail. Somebody by-passed the ABS system and set things up like a non ABS truck. It seems that for the amount of work that had to be done to do this, they should have just tried to fix the ABS. EJ(who did'nt climb far enough under the truck he now owns) - -- "EJ" In Hamilton Township, New Jersey, suburb of Trenton On digest where availabile, not regular mail E-Mail: oldsluvr The "Fleet" 1979 Pontiac "Olds organ donor" Trans Am T-tops Rebuilt Olds 6.6L 403 4bbl-TH350 Performer Cam and Intake.....going into the Calais For Sale. 1984 Olds Cutlass Calais T-Tops 5.0L 307 4bbl-TH350-2.14 gears K+N..... soon to be 6.6L 403 4bbl, and hopefully some better "rear" gears 1985 Olds Toronado 5.0L 307 4bbl-AOD(newly acquired Sept. 98). 1992 Lincoln Mark VII LSC Moonroof 5.0L 302 EFI HO-AOD-3.27 gears inner fender baffle removed-K+N. 1992 Ford F-250 Reg-Cab 4WD 7.5L 460 EFI-E4OD Auto-3.55 gears. 3-inch converter-dual outlet flowmaster 3 chamber. Complete K+N(no more factory air-box)-ADS Super Chip-Spitfires- Accel Super Coil-Cap-Rotor & 8.8 wires. 1994 Toyota Camry Sedan 4-banger-(Wow we could have had a V6!)-"mili -liter"-AOD. K+N (why did I even bother, still a slug!) My SO's rider == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html ------------------------------ Date: Tue, 5 Jan 1999 11:31:37 EST From: FLR150 Subject: Re: FTE 80-96 - Hard Start Problem with '86 Bronco II The EEC-IV reads off of 5 or 6 different sensors to decide things like choke and such. I know that it relies on the coolant temp sensor, the Manifold air pressure sensor, the Massair sensor (if equipped), the Throttle position sensor, manifold temperature sensor, and one other I cant think of. But if the coolant temp sensor is bad it will cause the computer to stay in open (or closed cant remember which) loop mode and stay with a preset default program which will keep the timing retarded and keep the mixture way rich. I haven't been following this thread that closely, but when you do get it started have you checked your initial timing (without SPOUT) and then your timing (with SPOUT) in place. It sounds like to me that either the TPS sensor is showing the wrong signal to the 'puter or that the timing is off and its set way too far retarded. Just my . 02, Wayne Foy '94 F150 Flareside Supercab http://www.ford-trucks.com//lc/lc.php?action=do&link=http://members.aol.com/flr150/auto/index.htm == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html ------------------------------ Date: Tue, 5 Jan 1999 10:37:34 -0600 From: "Dave Harmier" Subject: FTE 80-96 - Re: Rear Brake Trouble (92 F-150 2WD) Hi all, My 92 F-150 S/C 5.0L E4OD at approx. 6400 pounds WILL NOT lock rears!!! It will slide the fronts to cords (fortunately not the BFG tires I have THIS time!!!!) and I'd have to guess the rears are NOT pulling their share. No ABS lights or any other indication. For reference, my dads 87 Ranger has the VERY touchy when cold syndrom (rears lock EASY) but it takes no time to have good brakes. I just adjusted them like a week ago (and haven't had a panic stop since) Incidently, it stops well, except under duress (and that's NOT good for my shorts!!!!) Thanks in Advance! Dave H. dharmier == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html ------------------------------ Date: Tue, 5 Jan 1999 11:40:41 EST From: FLR150 Subject: Re: FTE 80-96 - Choice of thermostats -- Revisited Mike, Sounds like either the sending unit or the actual temperature sensor itself is going out. Check those out. Wayne Foy "94 F150 Flareside Supercab http://www.ford-trucks.com//lc/lc.php?action=do&link=http://members.aol.com/flr150/auto/index.htm == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html ------------------------------ Date: Tue, 5 Jan 1999 10:53:00 -0600 From: "Baldwin, Dave" Subject: RE: FTE 80-96 - Re: 80-96-list-Electric fuel pump keeps running If your fuel pump doesn't shut off, the relay could be stuck, or, if controled by the EECIV, the EECIV could have an internal short or harness short to ground, causing the relay to be continuously energised. I can't remember if the relay coil is terminated to battery or switched ignition. If it's terminated to the ignition switch, the relay should open when the key is turned off, even if the EECIV pump transistor is shorted. Check the voltages on the relay coil terminals with the key off. If there is no voltage difference between them, then the relay should be off. Check the resistance across the relay with it removed from the circuit--it should be open (infinite resistance reading). If the relay checks out OK, read the voltage between each relay control terminal and ground (without the relay in the circuit) with the key off. If there is battery voltage present on one of the control terminals, then the ignition switch doesn't control it, and the EECIV has total control. With the key off, the resistance to ground through the other terminal should be infinite. If you get a low resistance reading, the EECIV either has an internal shorted element, or there is a short to ground in the harness somewhere. By the way, if there is no indication of which terminals are which on the relay, you can determine what they are like this: Check the resistance between all relay terminals with the relay removed from the circuit. You should find one pair of terminals with a finite resistance reading (my guess would be 100 to 300 ohms). These are the control terminals. The other pair should read open (infinite if a normally open type--which this should be). There meter should also read open from either of the control terminals that you found earlier to either of the relay switched terminals. If there is a connection between either of the switched terminals, or either of these and either of the control terminals, get another relay. Regards, Dave Baldwin Dallas, TX - -----Original Message----- From: rokkinhorse Sent: Tuesday, January 05, 1999 8:01 AM To: 80-96-list Subject: FTE 80-96 - Re: 80-96-list-Electric fuel pump keeps running Mark,that would be me:-) There isn't only the oil pressure interlock switch on mine,but a fuel pump relay and inertia switch.If the relay is stuck,it would continue to run after shutoff,but would have to go through the oil pressure interlock also. If you have an 89 half ton,it's going to be controlled through the EEC4.My advice would be to get a schematic wiring diagram and begin tracing the circuit to the fuel pump starting at the ignition switch.With the key off,the circuit should be dead.If it isn't,you just found your problem. Randy Goolsby,LaCenter,WA.94 Bronco EB 85 F-250 4X4"the Second Amendment guarantees all the others" http://www.ford-trucks.com//lc/lc.php?action=do&link=http://www.thewowfactor.com/bigbroncos/detail.cfm?detailid=47 == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html == FTE: Uns*bscribe and posting info http://www.ford-trucks.com/faq.html ------------------------------ Date: Tue, 5 Jan 1999 11:57:20 EST From: FLR150 Subject: Re: FTE 80-96 - Re: F150 Brakes > In a message dated 1/5/99 11:33:51 AM Eastern Standard Time, oldsluvr On digest where available, not regular mail E-mail: oldsluvr .... 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