Pleas Help!! Car Stumbles and Dies

[holmesboy]

Hi I have a 1984 GN TT Chip 42lb injectors Bosch 237 FPR and a Walbro pump. I got a reman Napa MAF that I suspect may be the problem. It worked fine at first though. Car is really lean and then rich when I hit the gas when stumbling and leans right back out. Can't even put the car in drive, it'll die! I just got a Powerlogger and took a snapshot when it was stumbling at it worst (attached). No trouble codes. Please any advice. Thanks!

 

[Jerryl]

What is the combo?

First glance:
MAF is off - Crappy MAF - replace
TPS is too high (If this is idle)
IAT - 87 ECM or conversion?
IAC is maxed out - Adjustment
Car is runing lean - FP?
Set PL console to 2Bar MAP

Go to the sticky in the HA section to get an idea of values.

 

[holmesboy]

Hi Jerry,

Thanks for the reply.

I will replace the MAF soon. All values were around idle, but I had to keep hiting the throttle a little to keep the car from dying. Today I reset TPS to .46. I do have the 87 ECM conversion, but no IAT. IAC went to 212 today. How do I adjust the IAC on an 84. I didn't see the little rubber cap where the screw was supposed to be? The FP has not been verified, I just install the Bosch 237. Any other ideas?