More 460 questions
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Cargo Master
Joined: Jun 2005
Posts: 3,045
Likes: 21
From: The Ole' North State.
The top pic is the charcoal canister purge valve. Hooks to vacuum anywhere and then hooks to top of vapor canister. Just set it aside or tie it somewhere. Not really nessisary.
The second one is the smog pump valve. Puts air either into cat or into heads.
It's vacuum operated so the solenoid that controls it (I think by the coil) is unplugged and ecu shows no resistance so throws a code. Check that out and let us know.
The second one is the smog pump valve. Puts air either into cat or into heads.
It's vacuum operated so the solenoid that controls it (I think by the coil) is unplugged and ecu shows no resistance so throws a code. Check that out and let us know.
The truck no longer has a cat or air pump.
Reperformed the KOEO test and it passed!
Performed the KOER test and it passed.
Still sounded like it wanted to cut out at idle, but at least I know two things aren't working with is the purge and the Air Injection. Though the air injection I knew previously.
I'll take it out for a good run today, and let you know how it goes.
Thread Starter
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Cargo Master
Joined: Jun 2005
Posts: 3,045
Likes: 21
From: The Ole' North State.
So I think the next things on the list are a thermostat and water pump. It still has it's weird idle problem though, but only in gear. Does anyone know if that year C-6 had a lock up torque converter? Or if the torque converter could cause it to feel like it has no power occasionally? I know it's got a major tranny leak, and it drives a whole lot worse when the fluid is low. Wondering if the low fluid level so often might have caused some damage somewhere in the trans or TC that is causing some of my issues. Maybe time to rebuild it.. What do you think?
Oh and the water pump/thermostat is because at idle it sits at 190, and when driving it creeps up to about 220 230, which I realize isn't good, but as soon as I'm back to a red light, the temp drops again. This only started happening after I majorly overheated it (bout 250) driving around in 4 lo on the beach with 65 psi in the tires! It was struggling!!!
Oh and the water pump/thermostat is because at idle it sits at 190, and when driving it creeps up to about 220 230, which I realize isn't good, but as soon as I'm back to a red light, the temp drops again. This only started happening after I majorly overheated it (bout 250) driving around in 4 lo on the beach with 65 psi in the tires! It was struggling!!!
Logistics Pro
Joined: Jul 2009
Posts: 3,635
Likes: 3
From: Lansdale, PA
Check and see if your radiator is plugged. Externally and internally. Overheating while driving and not while idling is odd. Normally with more airflow over radiator it cooks better. What this is telling me is that radiator is compromised and extra load of driving cant keep it cool.
Pick up a 195 thermostat, drill a 1/16 hole in the flange (air bleed) and swap out the wpump like you want. Impeller could be toast and not circulating well. If you're not gonna try to reuse the coolant then put in some flush and run it a bit. Then rinse with water and replace items you want.
Pick up a 195 thermostat, drill a 1/16 hole in the flange (air bleed) and swap out the wpump like you want. Impeller could be toast and not circulating well. If you're not gonna try to reuse the coolant then put in some flush and run it a bit. Then rinse with water and replace items you want.
Thread Starter
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Cargo Master
Joined: Jun 2005
Posts: 3,045
Likes: 21
From: The Ole' North State.
Radiator is new. When I replaced it I vacuum filled the coolant system. It held pressure and vacuum for a while. So I don't think it's the Radiator. It may be a head gasket or something, but I haven't checked to see if the cylinders are leaking down.
This truck may just have one too many problems to still consider saving. Sad, but between the body work, and engine/driveablity items going on, I think it may be more than it's worth to fix. I hate to pass it and all it's problems on to some one else though, and I do love this old truck.
This truck may just have one too many problems to still consider saving. Sad, but between the body work, and engine/driveablity items going on, I think it may be more than it's worth to fix. I hate to pass it and all it's problems on to some one else though, and I do love this old truck.
Senior User
Joined: Feb 2012
Posts: 359
Likes: 0
Flush the system ( cooling) on my 1988 460 I pulled the block drains and nothing came out ! They were packed with rust and garbage inside the block , poked them with a screw driver and all the muck poured out . I then proceeded to rinse the block out with the garden hose . My truck does weird things when it gets hot , as the day progreses . I've wrapped the injector rail in a heat reflective tape which helped . The other thing I did was to move the air charge temp sensor out of the intake and extend the harness so the sensor is in the air box . The truck seems to have responded better with more power . It's a heat related issue with these things . So as long as the cooling system is clean and the coolant temp sensor is working correctly it should run ~ better ...
Tuned
Joined: Mar 2004
Posts: 355
Likes: 1
From: San Diego,Ca/ Mexifornia
What parts have you replaced so far.
I'm going to say maybe you're tfi module is bad or the cat is plugged. Weird how it acts up when hot and not cOld. That's a sign of a bad pickup of module. But also it's in warm run mode. Cat plugged should hold it back all the time but when cold the ecu has the fuel richened.
I'm guessing now. But you may need to throw more parts at it.
Being in ca is the truck mass air. Could be dirty maf sensor or leak in the intake tube maf to tb.
I'm going to say maybe you're tfi module is bad or the cat is plugged. Weird how it acts up when hot and not cOld. That's a sign of a bad pickup of module. But also it's in warm run mode. Cat plugged should hold it back all the time but when cold the ecu has the fuel richened.
I'm guessing now. But you may need to throw more parts at it.
Being in ca is the truck mass air. Could be dirty maf sensor or leak in the intake tube maf to tb.
I took it to a garage by my house(I think this guy is now going to be my new mechanic)
He looked at it drove it around on a test drive. Was gone about 25min. He went up and down the streets in the area. He came back and said yep the cat is blocked.
Will keep you all posted.
Thread Starter
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Cargo Master
Joined: Jun 2005
Posts: 3,045
Likes: 21
From: The Ole' North State.
I am getting a new Catalytic Convert tomorrow.
I took it to a garage by my house(I think this guy is now going to be my new mechanic)
He looked at it drove it around on a test drive. Was gone about 25min. He went up and down the streets in the area. He came back and said yep the cat is blocked.
Will keep you all posted.
I took it to a garage by my house(I think this guy is now going to be my new mechanic)
He looked at it drove it around on a test drive. Was gone about 25min. He went up and down the streets in the area. He came back and said yep the cat is blocked.
Will keep you all posted.
They also noted that their was no coolant in the system.
Yeah seems that when I heated it over on the beach, i may have just forgotten to put more coolant in it.. 
I shouldn't drink so much maybe I'd remember to take care of the details...
Tuned
Joined: Mar 2004
Posts: 355
Likes: 1
From: San Diego,Ca/ Mexifornia
Truck runs a lot better but it still blogs down.
Cat was plugged.
I am going to a mechanic that I know that's retired from Ford Motor Co. He worked at a Ford dealer here in San Diego. He thinks it might be a bad Map sensor.(even though it was replaced less than a year ago.)
He said he can test it with out a code reader. (he said he doesn't trust them, made in China or Japan wants to use a digital voltmeter) he said he has all of his Ford Manuals from when he went to work for the Dealer until he retired when they sold out.
So here we go again pour more money into it. I could have put a new crate motor in it by now. 
Cat was plugged.I am going to a mechanic that I know that's retired from Ford Motor Co. He worked at a Ford dealer here in San Diego. He thinks it might be a bad Map sensor.(even though it was replaced less than a year ago.)
He said he can test it with out a code reader. (he said he doesn't trust them, made in China or Japan wants to use a digital voltmeter) he said he has all of his Ford Manuals from when he went to work for the Dealer until he retired when they sold out.
So here we go again pour more money into it. I could have put a new crate motor in it by now.
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Thread Starter
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Cargo Master
Joined: Jun 2005
Posts: 3,045
Likes: 21
From: The Ole' North State.
Truck runs a lot better but it still blogs down. Cat was plugged.
I am going to a mechanic that I know that's retired from Ford Motor Co. He worked at a Ford dealer here in San Diego. He thinks it might be a bad Map sensor.(even though it was replaced less than a year ago.)
He said he can test it with out a code reader. (he said he doesn't trust them, made in China or Japan wants to use a digital voltmeter) he said he has all of his Ford Manuals from when he went to work for the Dealer until he retired when they sold out.
So here we go again pour more money into it. I could have put a new crate motor in it by now.
Cat was plugged.I am going to a mechanic that I know that's retired from Ford Motor Co. He worked at a Ford dealer here in San Diego. He thinks it might be a bad Map sensor.(even though it was replaced less than a year ago.)
He said he can test it with out a code reader. (he said he doesn't trust them, made in China or Japan wants to use a digital voltmeter) he said he has all of his Ford Manuals from when he went to work for the Dealer until he retired when they sold out.
So here we go again pour more money into it. I could have put a new crate motor in it by now.
But I am still the most happy with the transmission rebuild. I believe that fixed most of my issues. It's not slowing down, stalling out at lights any more. No more sticking it in neutral and keeping the RPM's up at a stop light.
Next is making sure the coolant system is working right. It's going a little weird still. Heating up while on the highway, though slow speed driving and idling seems ok. Anyway, busy weekend but hopefully I'll get the chance to start the testing on the coolant system. Thank God they haven't changed how these things work compared to the new cars. At least it'll be a simple diag on that.
Thread Starter
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Cargo Master
Joined: Jun 2005
Posts: 3,045
Likes: 21
From: The Ole' North State.
I've got the new one in the truck now, but it doesn't seem to be helping much sitting in the back seat!!!
Tuned
Joined: Mar 2004
Posts: 355
Likes: 1
From: San Diego,Ca/ Mexifornia
I have to agree, I have always only used the OEM plugs. In my 63' Galaxie 500xl with a 427 cid wedge motor. (it was my Dads car when I got my dl he gave it to me and then he got a Shelby GT-350. I used Champion but that was in the early 70's & 80's
Tuned
Joined: Mar 2004
Posts: 355
Likes: 1
From: San Diego,Ca/ Mexifornia
Well I got my Truck back today. I went and got on the freeway put my foot in it and was doing 90 mph by the end of the on-ramp. I got off the freeway at the next exit. There is a steep hill and the truck ran like a raped ape!
I replace the Ignition Control Module Part #DY1077.
It was also out of timing. Adjusted from 6 to 10 BTDC
The shop also put it on a Dyno runs great.
I replace the Ignition Control Module Part #DY1077.
It was also out of timing. Adjusted from 6 to 10 BTDC
The shop also put it on a Dyno runs great.
New User
Joined: May 2012
Posts: 11
Likes: 0
Glad to hear you finally got to the solution~!
I found this post due to the fact that I just bought a 94 450 460EFI and it has what seems to be a VERY similar problem. I may just bite the bullet and start first where you ended up. Many thanks, and enjoy your ride!
~Brian/Hurlmetal
I found this post due to the fact that I just bought a 94 450 460EFI and it has what seems to be a VERY similar problem. I may just bite the bullet and start first where you ended up. Many thanks, and enjoy your ride!
~Brian/Hurlmetal
Tuned
Joined: Mar 2004
Posts: 355
Likes: 1
From: San Diego,Ca/ Mexifornia
Well I have had my truck back for two weeks today! It still is running like a raped ape!
If I didn't know better I would think it had a brand new crate engine in it!
Thanks for all of the suggestions.....I think that maybe the best one was I should have found a new mechanic before I did 2 weeks ago. 
I really think I was making his payroll for the last three years.
I kept a list of the codes, in my notes about the problems, low and behold in last year 2011, I took my truck to my old mechanic, and told him the code was 212, he said okay. (then it started) he never replaced the Ignition Control Module. But he started throwing parts at it. I guess we live and learn.
If I didn't know better I would think it had a brand new crate engine in it!
Thanks for all of the suggestions
.....I think that maybe the best one was I should have found a new mechanic before I did 2 weeks ago. I really think I was making his payroll for the last three years.
I kept a list of the codes, in my notes about the problems, low and behold in last year 2011, I took my truck to my old mechanic, and told him the code was 212, he said okay. (then it started) he never replaced the Ignition Control Module. But he started throwing parts at it. I guess we live and learn.