I have been in the process of swapping TPI into a Nova and I am haveing a few problems. I fired the thing up last night and it ran decently well, seeing how most of the stuff came from a junkyard, but i am haveing a few problems. The car does not want to idle, it will run but it "hunts" for the idle and will almost die and bring the RPMs back up. I pulled the codes and this is what i got. 22,33,41,and 43. would anyone have a good place to start in diagnosing waht could be causeing my problem. Thanks

 

DSW

Need a bit more info -
1) which ECM are using and BCC?
2) is it SD or MAF setup?
3) Engine type, size, etc

//RF

 

sorry for the lack of info
1: iam using a 730 ecm with a vats delet
2: It is a SD setup
3: 350 cid engine with rebuild and factory roller cam
ONe more thing is this swap is being done with an aftermarket wiring harness.
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Also the engine is not want to take the gas hardly. you give it gas and it takes for ever to respond and it will not rev very high either, i dont have a tach hooked up but i would say the most would be around 2500-3000 rpms. i havent really had a lot of time to mess with it either so i havent tried anything.

 

Have you checked for vacuum leaks? What is your fuel pressure? What type of pump are you running?

 

I have checked for vaccum leaks and found some, before i posted this the thing would not even idle, but it is very possible that i have missed something. the fuel pump is an inline pump from Napa off of an older ford van. I am not sure about fuel pressure i dont have a gauge to check it with.

 

If it is an early 80s Ford van with sequential fuel injection you should be fine. If it is from a van with throttle body injection it is too small. TPI hates vacuum leaks. Go to Auto Zone and see if they have a fuel pressure guage you can rent.

 

Checked fuel pressure today and it is staying at a constant 45 psi. I will hopefully get a scan tool hooked to it tomorrow.

 

Check all your mechanicals are good before going too much farther.
Reset TPS and IAC, try to locate vac leaks, timing set to 6* with bypass connector unplugged, fuel pressure is good etc.
One thing that came to mind when you said it wouldn't rev.
Are you sure you have a V8 memcal in the ECM?