Strange Throttle Problem

[scorpion_x9]

Sometimes when ever I go to take off, I press on the accelerator and push it down smoothly, the car will accelerate choppy kind of like if i were pressing of the gas at 10% then 30% (instantly) then like 40% instead of increasing in increments of 1. It will feel like it jumps in large increments sometimes like the throttle cable is sticking. It doesn't feel like the throttle cable it sticking at all because that moves freely. I think it may be the TPS or possibly the MAP sensor... I noticed whenever I hold the pedal down while accelerating(at the same spot) you will feel the pull more a second later, even though you didn't press on the accelerator anymore. (i think that's probably just the computer compensating). Second opinions?

[Robby1870]

TPS

[terryk2003]

TPS

 

is there a way to test it!? :?

[DiscoStudd]

TPS

 

is there a way to test it!? :?

Unplug the electrical connector, and probe the terminals of the TPS itself with a multi-meter set to OHMs. Open and close the throttle (with the car off of course) and watch the resistance reading. If there's a spot where it "opens" (reads "OL" on the meter) then you know the TPS is shot...

[Robby1870]

TPS

 

is there a way to test it!? :?

 

Or buy a new one, install it, if it fixes the problem keep it, if not, take it back. But, DiscoStud's reply is the right way to do it

[Regal_GS_1989]

Coil Pack??? My 88 regal does that sometimes when it humid outside. The coil will cut in and out, causing it to accelerate kinda choppy.

[terryk2003]

TPS

 

is there a way to test it!? :?

Unplug the electrical connector, and probe the terminals of the TPS itself with a multi-meter set to OHMs. Open and close the throttle (with the car off of course) and watch the resistance reading. If there's a spot where it "opens" (reads "OL" on the meter) then you know the TPS is shot...

 

THANX...i'm gonna try that sometime...cause i'm having this same sorta problem... :?