Tonight i was driving on the highway at about 80 or 90 tops. I was getting off the highway when i noticed that the motor was at about close to 2000 rpm and i was not revving the motor at all. So i stop and adjusted the idle screw and that fix the problem. I just got home and the car did it again. What could the problem be. Please i really need some help with this. Thanks.

Ps- i have an auto. If that helps.

 

could be the kickdown

 

What is the kickdown ?

 

Ok so today i swap the maf's to see if it was that and then car is still doing it. I also checked the tps and its fine at 0.572 at idle and 3.986 at open. So what else could be the problem ?

 

Check the IACV and adjust the idle there

 

Im 00vi so i dont have a iacv. And it does it the moment my car turns on and even when its warmed up.

 

did you check for any codes?

 

I did go to advance today and i got 3 codes

p0505 idle control system
p1105 manufacturer control fuel air metering
p0171 system too lean bank 1

 

0505 is nothing
1105 is improper shifting into 3rd gear(auto tranny problem?)
0171 is not a good code

I would clear the codes, drive around for a while and then check the codes yourself and see what pops up.

 

The codes you get from a scanner are different than the ones you get by pulling them manually. What he listed are the correct codes.

 

bad throttle sensor?

 

Clean ur IACV and TB, clean ur MAP sensor--if it continues check for vacuum leaks and ur EGR for leaks-- how's your air filter?

 

doh! didn't realize that, sorry. anyway, i would still clear the codes manually and see what comes back.