My auto trans has been acting real funny lately, its always shifted hard. Even before the tune. But now it shifts even harder lately, up and down. Sometimes when I come to a stop it will stay around 1200 rpms and then drop down to around 750 all of a sudden. Also when I'm cruising around 40 it feels like the car shifts up and down constantly. There is also a weird smell after shutting the car off. And thats only from driving 10 minutes home from work. Just replaced the tps a few days ago thinking that may be it. But nope. Didn't fix a thing.

Does anyone know what could be going on? I was gonna go out and check the trans fluid but im sure everyone knows all about that....Really regretting not buying a manual at the moment.

 

I have a 5 speed manual. On occassion, I experience the RPM increasing up to 1,000 RPM when shifting into neutral and coming to a stop. I noticed the RPM will go back down, after a few seconds or so. I cleaned the throttle body and the MAF sensor and it definitely helped!

 

I forgot to add that. I cleaned the throttle body and maf sensor when I replaced the tps.

 

Have you reset your throttle calibration!

 

I have not done that yet. How do you do it?