Blackbob

nope...everything checks out ok. The Idle air valve was assumed to be the culpret. But I haven't been able to do more test since a few days ago. I'll keep you posted.

I'm working on a 87" Z31 with various mods and almost none of the stock manifold and emissions parts. VG30 turbo 5spd aftermarket fuel pump(so I've beentold,slightly bigger turbo,modified intake manifold, intercooler,almost whole nine yards. Car initially would run but have no throttle response. We then found a few vacum leaks and sealed them up. The funny thing is no she wont idle at all. We have to hard wire the fuel pump because there is a short somewhere in the system. Turned fuel pressure down to about 35psi which from what I understand is ideal for our setup on low boost. Swapped out the TPS and mass air on it with one of another Z similar setup but a year older. The older Z is mostly stock but runs fine without the mass air unhooked once the car is already running. Will start without the TPS unhooked but wont run higher than idle. Ok,fine,makes sense.....Now the 87 (the car in question) will not start unless the throttle is cranked atleast a 1/4 back and you have to play with it too. Once running it's at about 1-1500rpm but with the assistance or someone hold back the throttle. Once you let go it shuts off fatser then you can say stop.Takes a few seconds to start it up and sounds like it's running on three cylinders. I heard something about a drop resistor but didn't get to much info on it. Right now I have it narrowed down to either not enough fuel or too much fuelwith a combination of a bad MAF cannection maybe,anymore clues ? ~BB~