if it does not start with the maf plugged in but it does with it unplugged it is your mafwhen i disconnect my maf sensor the car runs but rough and hesitates but with it connected it stalls within a few seconds i cleaned it but that didnt work either. the check engine light is blinking but auto zone got no codes for it. what could it be
Did you have oil in the plug galleys? I had oil wicking up my #3 cylinder with the same driving condition as you. The plug had a burnt carbon trace all the way around it. So I did some new seals from Subi, new plugs and cleaning the spark plug boots & I haven't had a prob since. The coil pak and knock sensor both had the proper resistance so I did not replace them. The new seals have a slight ridge added to them I guess for extra compression? Also initially I did change the O2 sensor by recommendation of another member but that did not resolve it. If your PCV rattles when you shake it it's good.I am currently in the same position as many of you. It has been bogging down for some time now. I replaced the plugs, wires, and coil pack cause it was saying I had a lot of mis-fires. After that it drove better, but that did not last. This morning I barely made it to my nephews school and I heard a loud popping sound when starting from stop and I had to punch the gas to get above 3500 rpms. I also have no CEL and the car just idles bad. I am lost I am going to replace the PCV valve and see but I do not think I can get that lucky. I can barely even drive the car. Any ideas?
Are you even sure the check engine light actually works?? Maybe it is burned out....:curse:
Am i the only one wishing their damn car would throw a CEL ??? Just so I could narrow down whatever is causing my idle/poor mileage issues without replacing a crap ton of things like 02 sensors, fuel filters, air temp sensor, plugs & wires, EGR & TPS :/
I replaced my entire engine wiring harness all the way to the computer and now I have no hesitation issues. I actually put ALL of my OLD sensors and parts back in just to see what would happen and it runs perfect. I took the harness completely apart and tested every single wire and I STILL can't find a bad wire even after going through every single one. I have no explanation for what it is still or what I did to fix it. The only thing that I can POSSIBLY come up with was the computer was unplugged and without power for about 4 days while I changed all the harness over and maybe a bad spot in the programming was removed? That is seriously stretching it but that is the only possible thing I can come up with.2000 subaru impreza rs 2.5 coupe 5 speed.
My check engine light is on and i had it scanned and it came up as all 4 cylinders were misfiring. I replaced the spark plugs and wires. Car runs and drives but not perfectly. Ex: when im driving n i hit the gas a little before halfway or halfway sometimes, the car would just start speeding like wtf is going on with that it happens constantly and idk if its my knock sensor or coil pack or anything else. the car bogs and feels like it hesitates. Is it a sensor or my car not getting much fuel? Please help
What seems to be the problem on my car?
Would not hurt to hook up a fuel pressure gauge and see what it reads. You may also want to drive with it hooked up to see what it reads when you can starts cutting out. Coil Pack would not hurt either. I would try to find a used one somewhere first to make sure it is it.. Don't do like me and blow hundreds on stuff you don't need only to find out it is something else all together. you can't return sensors or electronics once installed..Okay thanks ill try the Map sensor then coil pack