sti v3. i have an annoying problem where once the engine is warm,say after 10 mins driving if i pull up at lights the revs drop right down and sometimes it actually cuts out. any ideas people

 

Hi mate. I had that on a previous car and it turned out the spark plugs were at fault. I'd actually just had it serviced at a main dealer and the week following it my car would be lumpy and the revs would be very irregular like yours. Turned out each plug wasn't properly tightened. So your problem could be plug related, or coil pack.

 

Yeah could try that as Matth says. I had a similar problem last month on my sti turned out to be the idle control valve. One of the screws had came loose and moved it slightly. repositioned and tigthened screw all ok now . Not saying its a screw loose but could be icv related.

All the best mate let us know what you find.

 

hi
any pics or diagram were the idle control valve is.
thanks kev

 

[IMG]file:///C:/DOCUME%7E1/Owner/LOCALS%7E1/Temp/moz-screenshot.png[/IMG]Yes mate have a look here

http://forums.sidc.co.uk/topic/14311...let-manifolds/

it will be the same or very similar. the 2 screws at the sides are the ones i used to adjust it.

 

Could be the oxygen sensor. I had the same issue. It didn't hold a steady idle and sometimes cut out..
New sensor- now perfect.

 

thanks dan but they are fine and dandy nice n tight any other ideas

 

thing is it idles fine on tick over. its just when u give it the beans then come to a set of light under hard braking and u dip the clutch to change gear

 

Ah ok mate mine was doing it when idling on tick over.
I had the same problem as yours on my x5 and it was camshaft position sensor. i had it once on another car and turned out to be a hose with a rip after the afm.

I would check all air hoses and also the oxygen/lambda sensor as mentioned in post by damchief above

Have you checked for fault codes and does the check engine light come on?

 

oops sorry dan should have said all that at the begining, have checked for faults nothing comes up...

 

what alarm you got on it mate as i had same probs last year and this year changed cam sensor crank sensor maf but as you aint got any codes it could be the sigma alarm/ immoboliser so got a new alarm and car is fine now hope this helps

ian

 

I would perform an ecu reset first. Then see what fault codes it throws up.

 

yep already been done

 

Sounds like an air leak post maf to me. Or a dying maf sensor.

 

could it be anything else. ive got next week off so more info the better so i know all the things i need to check............. thanks for all your feed back people

 

evening

 

Check the hard pipe that comes from the turbo to the intake.

 

anything else people