Hello all. I don't get on very often, only when I am at my wits end. Last week my 82 crossfire started dumping fuel through the injectors to the point that it floods out and dies. Seems that the idle air control motors open full also. When I restart the car it starts normally until I release the key then it floods right out again. Continues like this until I reset the computer by removing power. I have changed the tps and the coolant temperature sensor for the computer, chased the wiring all the way back to the computer, nothing. Last work done was a starter. Anyone have any ideas what's going on? This only occurs at low rpm.

 

You try looking for computer codes?

 

I would have thought the coolant sensor.you did change the one in the front of the motor?Did you put in the new style?

 

No codes and yes the sensor on the front new style.

 

Are you getting the fuel dump from both injectors or only one? If only one, my guess is that you have a bad injector on that side.

If your IAC are open, then your coolant sensor is telling the engine that it is cold. New or not, that is what the computer thinks.

What did you set your TPS at? .525 is where you want to be.

 

Both injectors dumping,iac's both full open, two sensors now, one Acdelco the the other standard, two tps, again Acdelco and standard. Set to .525 with adapter harness and meter Balanced the throttle bodies, 2 inches out of wack adjusted back into wack. Been driving it today and solar no issues. Do you think the tb's being that far off would have something to do with this.

 

Going out for another drive now.

 

So, you didn't really mention in detail what the injectors are doing. Like mentioned, is it one injector or both? How is the excess fuel being just added, is it dribbling in more on top of the normal cone spray?

Are you sure there is no code being set? Since you say it's only when cold that means that the ECM is using a predetermined value(s) to run the motor in Open loop and not taking info from the O2 sensor. If it's running ok when warm, then the ECM is controlling the fueling via the O2 sensor Closed loop among others.

It sounds like a CTS issue, but you say there isn't any codes which normally it would set that in a perfect world.

Just need a little more info on what's going on to be more of a help.

OK, just saw that you added more info after I posted this. If you balanced the TBs, did you reset the TPS after that or before balancing? If before, you MUST reset the TPS after you balanced the TBs.

As far as the balance issue vs. excess fuel...I doubt it, but should have idled rough if they are way out. The mechanical balance in itself has nothing to do with dumping excess fuel. Something else is or was causing it.

 

Driven about 80 miles and not a hiccup I'll keep you all posted.

 

Yes, and sounds like you got it!

 

I know this was yesterday..... So is it fixed???

I am guessing that you still have the problem...am I correct??

DUB

 

No codes and acting up?I'd replace the computer.My 84 TBI was doing all kinds of crazy **** w/no codes.Drove me crazy. New puter,runs like a champ.I opened the old puter and the traces were peeling up all over.

 

Looks like I have a similar problem as stated above. I recently put a new ‘84 ECM and chip in the car and it started up and ran better than it has in 20 years.

Twice now it has left me stranded due to being flooded. This time it started up after sitting for about 2 minutes (was making a quick stop), but it stalled after about 2 seconds of running. I tried to start it and nothing. Took the air cover assembly off and the throttle bodies have pools of fuel sitting in them. When it tries to start it dumps what looks like way too much fuel into the intake (both injectors).

It did this to me a week ago, had to tow it home, pulled the plugs and blew everything out and let it dry out over night, put brand new plugs in it and it fired right up.

Getting really good spark,
Fuel pump and relay are just fine
Can rule out oil pressure since ECM is kicking injectors on
no problems with coolant temp or any of that

The TBIs appear to still be factory set and the car doesn’t surge or idle high or anything, so it doesn’t get excess fuel while running.

in just really hoping it’s not the ECM because they are like unicorns, hard to find and ungodly expensive.

Any help would be great!

video attached is last week before I cleaned it all out.

 

You really should start your own NEW thread on this since this thread is five years old. There is hope if your ECM is bad...The EBL Flash II upgrade would be in your future if that happens if you want to retain the CFI system. It's a good move for sure.

 

You are responding to a post from 2016. Consider asking your question in a new thread.