I have an 84 crossfire I've changed everything I know to change now lol even the ecm and prom I finally have no check engine light codes showing cars runs fine sitting still if I put it in hear it drives fine if I stay out of the throttle if I get in it it sputters and dies I've synced the throttle bodies full tune up check te timing everything is good where do I go from here

 

pull out spark plugs ,turn the engine,find tds,mark it on the balanser !set timing ! check if the fuel spray looks fine ,no dripping! and yes tps

 

timing is right like I said it runs perfect sitting still only stalls when I'm In the gas thinking the tps but wouldn't that mess it up even if it was sitting in the yard my problem on happens when I'm driving especially if I give it to much gas
My next thought was fuel pump but it seems fine and was replaced two years ago but it was replaced with the crappy 84 pump

 

Did you check the rubber fuel line connecting the pump to the guage in the tank. I have seen these fuel lines with small splits or holes cause the kind of issue you are talking about. Use submersible fuel line there, the regular fuel line will turn to goo after a while inside the tank. I hope this will be of help to you, or some of the readers, even if it does not turn out to be your problem. You can find submersible fuel line for sale on ebay in different sizes.

 

I check the fuel pump it is an 84 pump needs an 85 but I found the sock to b a lil dirty and a lil dirt In fuel filter not enough to cause problems I don't think I do notice there is a lil trash in the tank beginning to think its catching up in the pump gonna order a new one tonight

 

STEP 1 in any CFI drivability issue; CHECK THE FUEL PRESSURE.

So yes, I have advice for you; check the fuel pressure.

 

Dude check the fuel pressure! and you don't need ten threads to get advice. FP is cheap and easy to do. Also a little dirt can and does cause big problems. Check thFP then post if you need more help.

 

Forgive me for saying so, but assuming something is working without verification gets people in trouble more often than perhaps anything else when troubleshooting.

Examples of what raises a big red flag in your statements:

Timing may very well be right - at least when idling. But, never assume! A troubleshooter doesn't know until the "thing" is tested and function is verified - especially under conditions when failure occurs!!

Again, an example of assuming... Were I doing the troubleshooting, I'd want to first verify fuel pressure under conditions of the failure. Could be the pump (I've had a pump fail right out of the box), could be the in-line filter plugged up, could be the fuel pressure regulator - NONE of which I would know until I measured and compared the results to what should be.

You may have gotten lucky; but you don't know. The assumption here is if it works under one set of circumstances, then it works under other circumstances This is where lots of folks get messed up, resulting in frustration. The device under test must be subjected to the conditions that exist when the system fails. Never assume.

Hope this helps so far.

I'm going to go out on a limb here, so y'all jump right in, but until 93 (when fuel injectors were made resistant to alcohol) injectors would fail due to the insulation of the coil windings (internal to the injector) failing (shorting out) in the presence of alcohol. This is indicated by the resistance of the injector being substantially less (primarily when HOT) than normal. (An injector resistance that is only 80% of that which is normal for a new one. And, there is little doubt it is failing when resistance gets around 2/3 of what it should be, as the injector is not opening properly.

And, I seem to recall from somewhere that the 84 has a two stage pressure regulator, no? You guys with 84s, please correct me if I'm wrong, but if that is the case then that would certainly fall under suspicion, especially under heavy throttle. (That goes back to the FIRST RULE OF TROUBLESHOOTING: KNOW HOW THE SYSTEM WORKS )

Hope something helps...

 

 

TBI injectors never had issues with alcohol that I am aware of. They are very reliable.

No two stage regulator. It's just got a plain old regulator, just like on a TPI, but w/no vacuum reference even. He just needs to check his pressure.

 

So whats your fuel pressure at idle and at maybe 2k rpm with car in failed mode?

 

Ok guys so still haven't checked the fuel
Pressure but I ordered the new 85 pump
Anyways since it has the 84 went ahead And pulled the pump to find alot of rust and trash in the tank I've cleaned it and the old pump up and put it back together wow what a difference car runs so much better even with the old pump
Still seemed to die If I spin around or takes curve to hard so I put more gas in it and it runs fine noticed when I took the pump out the white bowl looking thing that's supposed to b in the tank is gone how can I fix this

 

Well what do you know! Feels good to actually fix something. If you still want to give up I'll up my offer to 60 bucks and still won't charge a dime to get it out of your driveway.

 

Good thing he has a pump coming that he doesn't need. See rest of my response in other/dupe thread.

 

I don't even need to read the other thread, he already knows he has a dirt problem and his pump is still good. Since you guys' advice has went ignored I'm not even going to mention what he will do next, Tom, I'll bet you know it too.
To the OP, why do you ask for help, then when you get it you ignore it? Sorry to be so negative to you but this happens way too much.