MAF or dump valve
04 May 2008, 06:32 PM
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MAF or dump valve
Sometimes when i pull up at a junction or traffic lights my car idles v.low and ocasionly stalls. This usualy happens when its warmed up after ive been on a long run. Its a 98 sti v4 with a few minor mods like de-cat dump valve , induction kit etc. Ive just had a rebuild done with uprated internals put in so i dont want anything to go pop again!! Do you think its the MAF causing this or the dump valve??? 
04 May 2008, 07:14 PM
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Out of the two I would say MAF sensor but check your idle control valve if you have one.
Subaru Impreza Drivers Club > Idle Control Valve
Subaru Impreza Drivers Club > Idle Control Valve
05 May 2008, 10:40 PM
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I cleaned the MAF with some electrical contact cleaner and the car seemed fine today but i might get rid of the dump valve and put a re-circ back on to make sure
05 May 2008, 11:19 PM
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