So i have had a hesitation while under hard accelerating between 3-4,000 rpm for about a year now and it has finally gotten on my nerves enough to start looking into what is causing it. I figured the TPS so i probed the 1st (.9v) and 4th(4.1ish volts) wire and they are reading with in the specs, that i have, at idle so i hooked up the oscope and did a throttle blip and while i would call it a smooth ramp up and down i wouldnt think that it was bad enough to warrant replacing it. So am I'm looking in to the wrong sensor or did i do something wrong?

thanks

 

The sensor might be fine. When's the last time you simply cleaned the throttle body?

 

A few years maybe

 

Pull the negative off the battery and pull the TB and clean it and your MAF and do a re-learn after.

 

When my tps went out the engine rpm was all over the place and finally wouldn't run but for a few seconds. My throttle body was all gunked up but had been cleaned. Mechanic shop next door couldn't clear the code so I did some research and found that to be a common problem. BTW, I got a code for the tps sensor so found it quickly when I bought a dongle and got the software.