blackstang2887

I have a 95 that was a originally a v6. I recently swapped in a 5.0 from a 94 gt. I've been driving it for about a month now and it always revs up about 125 rpm after i let off the throttle. I was told that it could be the throttle position sensor and that seems to make sense but I'd like to get some better opions.

thanks!

84conversion50

when your in a gear?

chevykilla93

TPS should be in the .9 range at idle, nothing over 1.0 and anything over 4.25 for WOT. I would try adjusting that or seening if its badfirst before anything else.

blackstang2887

well i'm sure it does it when i'm in gear and let off but it isn't noticable. its noticable when i let off the throttle to shift. it lasts about 1.5-2 seconds and only revs about 125 maybe 250 rpm. its just annoying and i don't know whats causing it. i'll check the voltage level on the tps when i get a chance, thanks.

flyinghigh2k8

My car does the exact same thing and I was wondering if this is normal.....

flyinghigh2k8

bump

4.698GT

It could just be momentum within the rotating assembly

Joel5.0

Yes...... it's normal.... that is the "dashpot" idle strategy when shifting and VSS input is > 6 mph. You don't need to adjust the TPS or replace it, as long as no TPS failure codes are registered in the system. TPS normal acceptable closed throttle value is .5 - 1.19 vdc (.7 - 1.0 vdc = optimum), the computer takes care of filtering it to a ratchet value of 0....... adjusting the TPS is a myth, don't waste time doing something the computer is already programmed to do on its own.