Installed the tps in the winter time, and when the car first starts up it idles ok i guess, you can hear a small stumble. But as soon as you turn the lights on or the fan comes on, the idle goes up and down 1500 to 500 and usually dies. The volts are fine at 13.4 under a load. I hooked up my fast and look at tps percentage under full throttle and its only reading 61 instead of 90 plus. I probably think thats it but i just wanted to make sure if a tps would act this way if its not adjusted properly? Cam timing is right on as well. also it take like 3-4 times to start it up. It starts and dies and i have to rev the throttle to get it running. I know its my fault i didn't calibrate it right last year, so much was goin on last year.

 

ohh yeah this runs on a fast, and a venom manifold. So i have no iacv or fast idle valve, and never had and it ran fine last year.
Added 2 ground straps, new battery, new alternator. valves adjusted good, new plugs. Newly built bottom end. and vaccuum is reading at 20, which it should.


Modified by 9sech22civic at 10:22 PM 7/28/2005


Modified by 9sech22civic at 9:02 AM 7/29/2005

 

Adjust your tps to factory specs, problem fixed.

 

thanks for the input, anyone else want to chime in?

 

what is your tps calibrated to?

 

I have a fast system also. Check about battery compensation. It changes injector pulsewidth depending upon battery voltage. I assume you are using speed density and not alpha-n tuning. The fast system only looks at the tps mainly for accel enrichment in speed-density. Sounds to me like the VE table is off just a little. Does it run fine but will not idle? try going in to the cranking table and adding some fuel that should help the cranking part. hope this helps.

 

I'll try that. Yes it runs accelerates fine but will not idle, it stays at 1500 and drops to 500 intermittenly and the car stalls.