[gottatanfl]

My husband just replaced my fuel system on our 85 vette.

Now she runs absolutely GREAT if you can start it. But the dash is blinking and going nuts.

Fuel injectors were bad, causing her to run way to rich and die on me like she was out of gas. We replaced Fuel injectors, Fuel pump, Oxygen Sensor, coils, new vacuum hoses, and a new ECM Chip.

The first three days she ran great just the dash acts like it has a short somewhere. (we put the old chip in and it still does it, it did not do this prior)

Last night when we went to start her she wouldnt start, my husband poured
some gas straight down into the engine and she fired right up.

Any ideas, the garage''s all around us are run by idiots and I really dont want to take her to any of them

But hubby says sell the *itch he's tired of it.

We also put a 160 thermostat in it with the new chip and she is still getting up to 220 before starting to cool down and then runs at about 185-195

 

[gottatanfl]

It went to Chevy Dealer today the computer showed no codes.
They cant find anything wrong but it wounldnt start when it was there.

My son got it started dumping fuel in the engine and brought it home.

Somebody PLEASE give me ideas......

 

[Kod_X]

I don't want to be a bearer of bad news..

Its really hard to explain or diagnose your vette, since it could be a multitude of things. The only true way of knowing what is going on is to have your vehicle scanned for diagnosis.

Fuel pressure at the rails? How did he pour fuel in the TPI system?

 

[gottatanfl]

The car was scanned the dealer found no codes/errrors

He took an air breather off and poured gas down thru the breather.

The dealer said they had NO CLUE, told me to bring it back next week and they would just start trouble shooting one thing at a time.

 

[NICKO]

the 1985 had a program to burn off the dust on the Mass Air Flow sensor after it runs, if the computer does not since that this has happened then it will not let the engine start. :crazy:

www.hotrodlane.cc makes a kit to bypass this.:thumbsup:

 

[driley]

I agree with Nicko. Sounds like the burn off module. There is usually a couple for sell on EBAY. The 85 vette is the only model that has this module. But, if it doesn't sence the burn off process, it won't let the car start.

 

[gottatanfl]

Took it back to the dealer this AM as it was running horrible, BLACK smoke pouring out the exhaust

Dealer has had the car for 8 hours just called to say its over their head and they dont know where to even start. They think there are shorts everywhere in the wiring. Needing a complete new wiring harness and sill no guarantee it will fix the problem.

I ordered a MAF sensor this morning per everyone suggestion on here will get it installed this weekend and see how it goes.

 

[driley]

Took it back to the dealer this AM as it was running horrible, BLACK smoke pouring out the exhaust

Dealer has had the car for 8 hours just called to say its over their head and they dont know where to even start. They think there are shorts everywhere in the wiring. Needing a complete new wiring harness and sill no guarantee it will fix the problem.

I ordered a MAF sensor this morning per everyone suggestion on here will get it installed this weekend and see how it goes.

not the MAF sensor itself, but a module located behind the dash on the passenger side that is called the burn-off module.

 

[gottatanfl]

oops, replaced the MAF not the module but it is running GOOD...

My dash is still freaking out but the car starts and isnt burning as rich.

Thanks guys for the help:cheers:

 

[NICKO]

great! for the dash check the dime size ground near your left foot, where the wiring harnus comes though. you may need to reground it. if not I have the name of a person in Arazona the can fix the cluster.:thumbsup:

 

[gottatanfl]

Code 36

It started again, car ran great for two days then started with the same problem. I purchased a burn off module from ebay and installed it now we get a code 36...MAF Sensor Burnoff Circuit Problem
Before I put this module on the only code they pulled was a throttle postioner code...

Any ideas where to start AGAIN:down:

 

[gottatanfl]

We put the original Burnoff back on and the only code we get is 21

Put a new throttle position sensor on...still get same code.

 

[msea85]

Replace the IAC idle air control valve on the bottom side of the throttle body just below the TPS sensor and if that doesn't work you may have to do the Injectors. My car was doing the same thing Replaced those two things and it ran fantastically.

 

[gottatanfl]

I found another post on here about the TPS and that it needed to be adjusted, we adjusted ours Now no codes...Vette is running great AGAIN, Fingers Crossed this was the problem all along and we have no more problems.

Thanks for this forum as the dealer was NO HELP and no local garage could help. I would be dead in the driveway without you guys..

 

[cheetah]

FIRST I would check all the grounds. A poor ground can creat a multitude of problems that will leave you scratching a hole in your head. This may certainly be the case, especially if there has been work done previously.
I had an '85 that ran terrible. I replaced the ECM and no problems after that. I do not remember what codes it had, if any. It was 20 years ago. I would not suggest doing that just yet. Does your car flash a code 12 when you ground the ALDL? Does the check engine light come on when the key is in the on position without the engine running? If the answer to these is no, these are signs of an ECM problem. Does the car fail when it gets hot? After the ECM has a chance to get hot, smack the ECM with your open hand and see if the car dies. Don't kill it. Smack it like you'd slap someone's face. This is a tap test.