Thread: Issues over 3,000 Rpm

oh ya i was going to mention that.. doesn't seem very responsive.. but i dont think it would be causing your issues.. i've driven my car with out it before, and my friend has also. neither of us had that issue.

when my gf gets off my laptop i'll go over my log again for comparison.

none of the symptoms you described point to that.

To check unplug the tps and see what happens

Anything else you can think of while I'm working on it ?

checking my laptop right now to compare

ok so my log didnt show exactly as yours did, but the injector timing did go up like yours and the duty cycle went down. however my fuel pump didnt turn off or whatever like yours did. so if that is indeed what yours is doing it may be electrical..

did you just get this car running ? whats some history on it?

I bought the car two years ago and slowly built it to a turbo car when I first got it the car had a misfire which was quickly fixed and it ran fine after that. I finally finished doing the exhaust, running all the gauges and tuning around Christmas time and finally got the car to where its just about ready to hit the road.

ok so you didnt drive the car enough to know if this was a pre existing problem?

im just tryin to get you pointed in the right direction man but i would check the fuel pressure, maybe change the filter, check the voltage at the pump and maybe replace the fuel pump relay. all cheap or free and easy to do.

Fuel pressure is at 43 without the vacuum line connected and I just put in a new 300zx fuel filter.

to bad your fpg wasn't mounted in the cockpit so you could see what it does at the time of the problem.

in the log you sent everything seems fine except two things, your fuel pump goes to off when the problem occurs.. And your tps doesn't seem like its working right but i really do not think that is the issue.

I think I'm going to try and "borrow" the relay out of my brothers car to try and reduce the list of possibilities.