Hi peeps can anyone explain this :

Usually the car idles at 650rpm but from time to time the revs jump to almost 900rpm then down to about 550rpm then rises to 900rpm and back down to 550prm continuously till I blip the throttle then it settles.
could this be the maf sensor ???

In 2 weeks it's happened about 5 times .
thanks to anyone who has an idea, I have already informed the dealer so it will get checked soon.

 

Yup

Especially if you have a MY99

Good luck

 

Happened to mine but it seems to have gone back to normal now !(MY99),try a search and you will see it's a common problem .

 

Mine went back to normal. Some time later I got it checked by PE and it was so shagged running it much longer could have killed my engine Caught it in time though - started off with that idle problem, which went and I thought everything was ok........

 

my93 wrx import keeps cutting out is that the same thing doese it now and then

 

Just checking but do you have air con and was it switched on at the time as when compressor cuts in and out periodically this affects idle speed due to extra load on engine.

 

tino- no the ac was off but the interior fan was on at low setting

the car in question is a 00 P1 !!!

[Edited by kenny.c - 2/22/2003 2:39:01 AM]