issues getting engine swap to run, help.
Logistics Pro
Joined: Apr 2010
Posts: 3,577
Likes: 29
From: Pekin, IL
if you get a new TPS, be sure to disconnect the battery before changing it. the KAM(Keep Alive MEMORY) stores the base voltage from the TPS.
there is a 15% variance allowed from one sensor to the next, on the assembly line. so it will read the base voltage when you first hook the battery back up. it stores that reading and retains it as the base voltage or in other words...the closed throttle position...I'm tellin ya theres some good info on that site for us EFI guys! And no I don't always believe what I read, but until someone tells me different, its what I got to help me. I have a book also that is about 88-93 Ford EFI. also a great tool. by Charles Probst.
there is a 15% variance allowed from one sensor to the next, on the assembly line. so it will read the base voltage when you first hook the battery back up. it stores that reading and retains it as the base voltage or in other words...the closed throttle position...I'm tellin ya theres some good info on that site for us EFI guys! And no I don't always believe what I read, but until someone tells me different, its what I got to help me. I have a book also that is about 88-93 Ford EFI. also a great tool. by Charles Probst.
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Junior User
Joined: Nov 2010
Posts: 94
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From: Wetside, WA
Sweet sweet sexy success! Put a $40 TPS sensor in and it revs like a charm. Now on to the other issues, lol. Thank you everyone, especially you Jeff, for all your help on this specific issue. Next up is tackling why my alternator isn't charging my battery and how to wire up my fan to come on at a certain temp. vs. being on all the time or a switch. Thanks again!
Hotshot
Joined: Nov 2000
Posts: 11,591
Likes: 14
From: Pflugerville, tx
Sweet sweet sexy success! Put a $40 TPS sensor in and it revs like a charm. Now on to the other issues, lol. Thank you everyone, especially you Jeff, for all your help on this specific issue. Next up is tackling why my alternator isn't charging my battery and how to wire up my fan to come on at a certain temp. vs. being on all the time or a switch. Thanks again!
there are simple hard wired temp controls (not adjustable)
and fully adjustable controls.
this is what I used on mine, also had A/C control of the fan as well.
GEARHEAD 180 - 250 DEGREE ADJUSTABLE DELUXE FAN CONTROL - eBay (item 300536507557 end time Mar-16-11 21:48:58 PDT)
you need to install some sensor in the intake for this to connect to.
heres one from hayden, adjustable, and provides a sensor, (may still need a reducer bushing)
Hayden Electric Fan Control 3651 - eBay (item 370486586870 end time Mar-22-11 17:21:30 PDT)
I don't like the kind that have the push thru the rad fin sensor..
the one I picked I was able to connect 100% under the dash, and reuse the EZWire harness wires to connect to the sensor, power, a/c and fan. the adjustability has been important due to the combo of parts I put together, and when I needed to add a resistor to the temp sensor lead to get the gauge accurate.
I actually used this to trigger another relay at the fan which used direct battery connect.. this keeps the load out of the fuse box.. (I relay controlled the headlights, fan(s), air pump and fuel pump this way)
sam
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Junior User
Joined: Nov 2010
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From: Wetside, WA
Update. Got the shifter linkage hooked up, driveshaft, etc... The truck starts and revs fine, but when we went to back it out of the garage it died. We started it and it ran like crap. Hunting for an idle between 400-600 rpm, wouldn't rev up well at all. And backfiring through the intake.
While it was doing that we tried unplugging some spark plug wires since it sounded like it wasn't running on all 8 cylindersand there didn't seem to be any change at all.
We let it sit for a bit then started it and it seemed to run fine, so once again, threw it in reverse and the same thing happened. What would make it run like this when it's under load/in gear?
I forgot to get a new cap/rotor for it, could this be a problem? Thanks again for the help.
Joe
While it was doing that we tried unplugging some spark plug wires since it sounded like it wasn't running on all 8 cylindersand there didn't seem to be any change at all.
We let it sit for a bit then started it and it seemed to run fine, so once again, threw it in reverse and the same thing happened. What would make it run like this when it's under load/in gear?
I forgot to get a new cap/rotor for it, could this be a problem? Thanks again for the help.
Joe
Posting Guru
Joined: Dec 2008
Posts: 2,352
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From: Waleska, GA
Although I can't take credit for doing the "heavy lifting," the TPS was my guess on page 1. I'm glad you got it fixed, especially since I have an 87 T-Bird 302 in my 1953 that I've yet to fire up. 
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Joe Kucinski
Logistics Pro
Joined: Apr 2010
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From: Pekin, IL
ain't efi a pia
Hi Joe! had to read back through this thread, but what tranny do you have?
You did have a code for neutral safety switch or a/c voltage too high.
I doubt cap and rotor is the problem. maybe on a high revving race car but not in this case.
Rerun your code scanner. the popping/backfiring sounds like ignition issues. possibly the TFI module??? (it's mounted to the distributor on yours...i think...) the computer can make it do wierd things that I haven't learned all about yet.
I think to myself, "who cares if the neutral safety switch is connected or not!" but that may change something in the computer to compensate for load. And it should, but yeah let's see what it tells us!
You did have a code for neutral safety switch or a/c voltage too high.
I doubt cap and rotor is the problem. maybe on a high revving race car but not in this case.
Rerun your code scanner. the popping/backfiring sounds like ignition issues. possibly the TFI module??? (it's mounted to the distributor on yours...i think...) the computer can make it do wierd things that I haven't learned all about yet.
I think to myself, "who cares if the neutral safety switch is connected or not!" but that may change something in the computer to compensate for load. And it should, but yeah let's see what it tells us!
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Junior User
Joined: Nov 2010
Posts: 94
Likes: 0
From: Wetside, WA
I have the stock '88 aod. Which is the non computer controlled one. I pulled the codes yesterday and got 67(neutral safety switch), 81, 82 (egr stuff) and 87...which I forgot what that was...its back a few posts I'll check in a second here. That was my thought with the neutral switch, too. How would I go about bypassing that, though? I'm goung over there again tonight, so we'll look into the tfi module as well.
Logistics Pro
Joined: Apr 2010
Posts: 3,577
Likes: 29
From: Pekin, IL
If you have the same tranny that the engine came with, then I wouldn't bypass it.. did it get taken off? is it connected up? I was assuming you had something else. Sorry not quite as tuned in this time...
1:been sick with a flu
then
2:gallbladder attack
3: trip to ER got some great painkillers!
4:Then my mom is in the hospital
so its been a tough week for my house
need some more of that too!
check out that NSS and connection. I will check back in tomorrow, hang in there Joe! U R gettin there!
1:been sick with a flu
then 2:gallbladder attack
3: trip to ER got some great painkillers!
4:Then my mom is in the hospital
so its been a tough week for my house
need some more of that too!check out that NSS and connection. I will check back in tomorrow, hang in there Joe! U R gettin there!
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Junior User
Joined: Nov 2010
Posts: 94
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From: Wetside, WA
It is the original transmission. We did take it off to put new a new gasket/filter on the transmission. I don't even know where the engine side plug is for the neut. safety switch. And after thinking about it, the computer doesn't know if it's in P or D since it's not hooked up. So, the neutral/reverse lights plug isn't even hooked up. It's just hanging next to the transmission.
Sorry to hear about the rough week, I hope your mom is doing well.
Sorry to hear about the rough week, I hope your mom is doing well.
Logistics Pro
Joined: Apr 2010
Posts: 3,577
Likes: 29
From: Pekin, IL
thats how I like it ! you were looking listening and its all about helping or getting help! And that little red '53 is looking real sweet! looking forward to more pics! I wish I had a building like that!
Logistics Pro
Joined: Apr 2010
Posts: 3,577
Likes: 29
From: Pekin, IL
It is the original transmission. We did take it off to put new a new gasket/filter on the transmission. I don't even know where the engine side plug is for the neut. safety switch. And after thinking about it, the computer doesn't know if it's in P or D since it's not hooked up. So, the neutral/reverse lights plug isn't even hooked up. It's just hanging next to the transmission.
Sorry to hear about the rough week, I hope your mom is doing well.
Sorry to hear about the rough week, I hope your mom is doing well.
Anyway yeah ur on it Joe! find that empty connector and that should do something for ya. good luck!