Finally found the vacuum leak, 3 cans of starting fluid later, lower intake manifold, backside bottom near turbo, working on fixing it right now but the car is too damn hot to work on. Also, I have my fuel pump jumpered straight to the battery at the moment and it's starting 10x easier than it ever did before.gotta fix that vacuum leak then see what's going on next.

 

i hate vacuum leaks !

 

likewise, spawn of all evil things! Though I think I'm going to wire up my fuel pump so it stays at 12V instead of dropping to 9, anyone have any ideas on how to accomplish this? I don't care if i burn more gas/etc that's fine.

 

SonicRaT......did you ever fix the bucking problem?????

I created a problem like that yesterday when swapping afm b/t cars. I discovered the the bucking that I created was caused by the plug on the afm. On each of my other cars, I have seven wires at the afm. I noticed on my 87N/A I had only six. It seems the third pin from the right and the third pin from the left are spliced together inside the afm with so it would seem not to matter, but I had a intermittent connection on the one wire that I had (brown/black on a 86-87, pure black on 89 and up) and it was causing ole buck to show up just driving around the block.

So I recrimped the only brown/black wire and spliced in another ground to it(it was reading 6 plus ohms, too high to do any good)and the car is back to normal.

So I'm saying that maybe your afm plug is suspect, especially on the ground wires. Make sure the ground is less than 0.10 ohms. Just a thought.

 

thanks for the info Hailers, but I'm pretty sure it was caused by my vacuum leak, the gasket was no pretty sight once I got the lower intake manifold off. It was quite sad actually The damn o-ring was torn and leaking coolant onto the gasket, and I guess the coolant ruined the gasket creating quite a nightmarish vacuum leak, which explains why it ran fine for 5 minutes then when it warmed up ran for **** But if it still does it after I fix that, I'll definatly check the AFM plug, thanks again!

 

my injectors are clogged (get yourself a damn a/f gauge) my car does the same thing after i drive for a few minutes and heat up those injectors. it just starts spitting fuel out really fast and pins the a/f gauge at rich and it hesitates and bogs after a couple minutes of driving.

 

Since no one has mentioned it, the car could be going into limp mode due to a bad metering oil pump. That should put a code into the ECU, however.

 

Yeah, no ECU codes on the OMP.