Question about 1998 Subaru Impreza
About 2 weeks ago my 98 subaru impreza developed a intermittant stalling and rough idle problem. i changed the plugs, wires, & fuel filter. the fuel pump & pressure along with the head gasket are ok. i tried using fuel injector cleaner also. sometimes it will run brand new and other times it will start to give me problems within a mile on the way to work or home. it only stalls at low speeds, and will start again after it sits a couple of minutes. then, usually runs fine. my garage is guessing a bad fuel injector but i dont agree. any suggestions. thanks, keith
You might have leaking injector(s) or injector O-ring(s). It could be leaking inside the fuel rail feeding fuel constantly. The pressure could be OK because the computer compensates by working the fuel pump harder in order to keep pressure within specs. I have a similar problem in my 99 Outback, it rough idles at stops intermittently. I recreated the problem, I checked it in my back yard, turned it on, let it warm up. Then I put it in gear went forward stopping and going with the e-brake until it rough idled. I got out put some bricks in front of the tires and started checking around. I noticed when it rough idles the transmission makes a constant sound. I would describe it as a fast ticking, sounds electronic. I tried messing with the idle by adjusting the TPS. I noticed that when I set the TPS to where there was little or no signal coming from it the sound would stop and the idle would be normal. I haven't had time to check it again but I don't know what to think of it.
Posted on May 01, 2009
I would say maf 2
Posted on Dec 29, 2008
Clean throttle plate and housing, carbon build up is many time the cause of your problem, Subaru agents sell a good working cleaner for it. Take the air filter intake pipe off the throttle body and spray in in the open throttle body, and spray it also on the throttle plate, and let rest for about 15min. Then refit removed parts, and take the car for a road test till it's all warmed up, most of the time the problem is gone.
Posted on Jan 02, 2015
MAF SENSOR MATE
Posted on Sep 11, 2008
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