New to the dark side, i need some help PLEASE!!!!! I have a 87 GN with 39,000 miles on it. It is 100% stock and I can't get it to idle. The car sat for about 5 years without regular driving. When I got the car I changed the fuel filter and plug wires and it idled fine.
In the past month it started idleing rough. I bought a scanmaster and have adjusted the tps to .42. The best WOT number I can get 4.30. I have set it from .40 to .46 and still the best WOT is 4.30. The car idles rough but runs very good through about 3/4 throttle. It actually pulls harder at 3/4 throttle than WOT, I assume it is from the tps and the ecm not seeing it as WOT???
I was able to adjust the IAC to get a reading of 25 before adjusting the tps. Once I set the tps, the iac reading went up to ?? (out of normal range and I didn't write it down). I adjusted the IAC back down and then the tps reading went out of whack. I decied to adjust the tps correctly and now I get a IPC reading of 00 or 01.
I have found NO vacuum leaks anywhere.
Here are the other numbers:
af 06, l8 45, int 128, BL 150, ats 57, iac 01, cc 218, mal 22 and 44
If my little brain understands some of this, it appears that the maf is ok, the ecm is adding fuel (long-term) to compensate for something?????
Is this as easy as a bad tps? I don't want to just start changing parts until I have someone with experience look at this too. Any help would be greatly appreciated.
Also, how do I post stuff in my profile? Thx.
In the past month it started idleing rough. I bought a scanmaster and have adjusted the tps to .42. The best WOT number I can get 4.30. I have set it from .40 to .46 and still the best WOT is 4.30. The car idles rough but runs very good through about 3/4 throttle. It actually pulls harder at 3/4 throttle than WOT, I assume it is from the tps and the ecm not seeing it as WOT???
I was able to adjust the IAC to get a reading of 25 before adjusting the tps. Once I set the tps, the iac reading went up to ?? (out of normal range and I didn't write it down). I adjusted the IAC back down and then the tps reading went out of whack. I decied to adjust the tps correctly and now I get a IPC reading of 00 or 01.
I have found NO vacuum leaks anywhere.
Here are the other numbers:
af 06, l8 45, int 128, BL 150, ats 57, iac 01, cc 218, mal 22 and 44
If my little brain understands some of this, it appears that the maf is ok, the ecm is adding fuel (long-term) to compensate for something?????
Is this as easy as a bad tps? I don't want to just start changing parts until I have someone with experience look at this too. Any help would be greatly appreciated.
Also, how do I post stuff in my profile? Thx.