Celica Forums General Discussion General Rpm problem

When I came back from lunch... and I entered in my parking... the RPM was unstable... it pass from 700 to 200-400... several time...

Just like the engine will stop...
the engine temp was normal...(not cold)
It's a rainy outside...

What do you think is it ??

I have a injen SRI... the fuel was full(with premium)

should I clean my MAF, my injector, my trottle body ??

Thanks in advance !!

yes mine does the same thing...clean ur MAF

thanks !

my car does the same thing...

i cleaned my MAF...and the problem disappeared!

but after a week...the problem came back!

I have the same problem too. I'll try cleaning the MAF and hope it'll take care of the problem.

how often do you ahve to clean the MAF sensor anyways? seems like everyone is having problems with it

I cleaned mine once at 58,000k. Now I have 68,000k still all good! I have SRI also. Problem could also be a bad 02 sensor...

Just for good maintenance on your car you should, especially with any sort of Intake, clean the MAF reset the ECU and clean the throttle body including the IAC valve. It only takes a couple of dollars and a very little amount of time. When did you get your last tune up? I cleaned my IAC, throttle body, and had a tune up and no more problems since. The IAC valve is the thing that regulates your cars idle. It looks like a flathead srewdriver bolt on the bottom front of your throttle body. From the inside it has a slit towards the front on the bottom left centered. Try all the things listed here and previously. If these don't work take it into Toyota or a trusted knowledgeable mechanic.

By the way, from my own experience so it may differ. I cleaned my MAF once, a year after my Intake was installed when I was throwing a CEL. After I cleaned it the CEL was gone. A CEL shouldn't be shruged off for any reason. I haven't touched the MAF since. And this is maybe almost a year, changing filters, and disconnecting the damn CAI many times. Also tightening the throttle cable seems to be a fix here. It's good maintenance. You can try it, but then again from my own experience (and it may differ) it was only part of the problem or masked it. I'm glad I did it and had to do it again. A low idle should never be a quick tighten the throttle cable on any car. Unless you are the one who's cable went way lose by some misfortunate accident.

thanks,

I cleaned my MAF yesterday, after works... and as far I as know the problem is solve...

Thanks everyone !

Yup just clean the MAF.