OK Guys im pulling my hair out about to take a shotgun to my TPI System. Ok here is the deal: Car will not inject fuel on startup pulse width is 0.0 so I have been injecting gas using my nitrous system. NO the Nitrous isnt hooked up for all of you that were about to ask. Anyway its starts fine then, after that it doesnt seem to know if it is rich or lean. The BL goes from 150 down to 108 slowly then back up to 150 again and again. MAF sensor stays around 8. I have replaced the o2 sensor and the distributer and the coil. Trying to fix these problems but to no avail. Now there is oil in some of my cylinders but compression is good all cylinders between 190 and 180. oil cylinders closer to 180 dry to 190. I believe they are getting fuel washed and i can smell a little gas from exhaust. It is an 88 GTA W/383 Summit tpi cam (Warm But not Hot) 24 # accel injectors that i got new for $230 (HMMM) an msd ignition and coil (problems started before Ignition and coil were installed) Have tried programing new chips and used stock 350 chip doesnt make any diference. Well what do you guys think? Any ideas or should i find out what a 12 guage does to a TPI system.

Thanx for your time

 

forgot to mention. Diacom reads no trouble codes and engine light has never came on.

 

Come on anybody have any idea im about to go carbed.

 

No SES light, and used several chips?. Sounds like ecm or harness problem.

Fuses all good?.
Pins fully seated in ecm plugs?

 

Sounds like injector driver 12v supply or ground has a short. There are pink and green and pink and blue supply wires that are twisted around each other. Check them. And check the 12v switched power goind into the ecm that powers the drivers. A short in these will let the car run like that and will burn up the ecm but the car can still run.

 

Thanx Ill go over the harness tonight. you know for awhile the car would just sometimes start but now it never does a short in the harness would seem to make sense

Thanx ill retrace the harness. and give you guys an update on what i find