1989 2.8 not running right

I have a 1989 Grand Prix with a 2.8L.It recently quit on me while accelerating out of a parking lot into traffic.Now it won't stay running.Has new fuel pump,TPS,plugs and wires,is getting spark,checked the IAC,MAP,ECM,EGR,CPS all is good.It gives a MAP code but I tried a different MAP to no avail.It will turn over and start but runs like it is on 2 cylinders and as soon as you give it gas it quits.I am pointing toward timing issue

Welcome to AF.

Instead of posting a link to another forum where you have an issue posted make a new post here (copy and paste) or someone might construe your post as violating the rules.

ok..editted first post...any thoughts??

Double check your fuel pressure. Just because a part is new, doesn't mean it couldn't/didn't fail.

Is it getting spark on all cylinders? You could yank the ICM off there and bring it in for testing.

Is it getting spark on all cylinders? You could yank the ICM off there and bring it in for testing.

did that..everything checked good

Double check your fuel pressure. Just because a part is new, doesn't mean it couldn't/didn't fail.


I hear ya....I do not have a pressure gauge to do that..the first thing I did with this problem is change the fuel pump that only had 10,000 miles and I thought it had failed..figured what are the odds 2 pumps are bad.
I know I should still check that though

it was a bad fuel injector