Hi I have recently started getting some problems when accelerating from slow speeds under load. For example, I am driving up a hill behind a slow truck, when I am ready to accelerate the car hesitates and jerks up. I changed the spark plugs, coil packs, clean injectors and replaced the fuel pump and filter. Nothing helped. The most amount of improvement I got was when I replaced the air filter in that the issue happens fewer timed. So I am thinking it has something to do with the amount of air entering the engine, so I cleaned the Mass air flow sensor, no improvements. Now I tried testing my TPS sensor, and it increases and decreases smoothly. The only thing I found weird was that at full throttle, I got a reading of 3.88V but the supppy to the TPS is 5V. Could this be a issue? Also at idle I got 0.55V. This is for a Toyota Corolla Nze 121.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.