Z24i ignition problems

[JC87HB]

ok so i have had a problem with my truck rev limiting at 2500 rpm.. and its been off and on... so i decided to replace the ignition coil... well when i got the truck home... i went back out to start her again and it cranked ran rough ~500 rpm and sounded like it was misfiring and would shut off... now it only cranks and dies right after. I have a ignition module on order for the intake side.. my understanding is it should be able to run off the exhaust side only right? well its wont... when i turn the key it the motor tries to turn over but wont... Any hints?

[JC87HB]

ok i went to double check my exhaust side for a spark.. and the motor wont crank on just the exhaust plugs.....

[Saudade]

Are you getting spark on the intake side? I have the same problem on my 87 Z24i. However, mine will start, no problem, and run smooth up until the cutoff. You can search on my handle and see the threads.

The coils are the same for intake and exhaust. I had this same thing happen before and it was a bad coil. I swapped them until I got a new one. Not so lucky this time however.

You can pull the bench seat out and access the ECU underneath. If you search around, you'll find the instructions for reading codes from it. That may help.

[seang]

If you unplug the MAF sensor, it will blip out at 2500rpm, and run ok under that amount.

[JC87HB]

where is the MAF??

[JC87HB]

Jk found it.. unplugged it... and still having problems... its either my igniton modules or my ECU!