Car started having problems (misfires and almost dies at idle)
10-29-2009, 08:15 PM
#1
Car started having problems (misfires and almost dies at idle) Well just a little bit ago i got in my car to come home and the car started up fine and also ran fine just before this. I pull up to a stop light and the car about dies and it starts misfiring bad. I have to keep the idle up at about 1k. I'll take off and the car feels like it has no power and then it will all of a sudden take off just normal and then start misfiring again and has no power and while this is going on the SES light is flashing. I just put new plugs in about 2 or months ago. Could this be a faulty plug thats just now causing problems? or could this have something to do with the coils?
10-30-2009, 03:45 AM
#5
TECH Regular
Autozone should read them but won't clear them I think, and yes you can drive it just don't do very many long hauls until it's fixed
As far as what is causing it, it could be a bunch of things like plugs, wires, coil, coil harness, fueling, vacuum leak, dirty MAF, and bad O2's off the top of my head.
Pull the codes and go from there, you may be able to isolate a cylinder that is having issues and narrow down your search. I'd start with doing the free stuff first like checking plugs and wires until I know if something needs to be replaced or I'm forced to replace a part because I'm out of options.
I hate to see people just throw money at an issue and end up not fixing it or it ends up being something that could have been free.
As far as what is causing it, it could be a bunch of things like plugs, wires, coil, coil harness, fueling, vacuum leak, dirty MAF, and bad O2's off the top of my head.
Pull the codes and go from there, you may be able to isolate a cylinder that is having issues and narrow down your search. I'd start with doing the free stuff first like checking plugs and wires until I know if something needs to be replaced or I'm forced to replace a part because I'm out of options.
I hate to see people just throw money at an issue and end up not fixing it or it ends up being something that could have been free.
10-30-2009, 04:55 PM
#6
I went to O'Reilys and did the diagnostic test. The code was P0300 if i remember right, came up as "Random/Multiple Cylinder Misfire Detected." Thats about as much as i know at this time as to what the problem could be. It ran perfectly fine for about 30 minutes while i went a few places and to O'Reilys. But...right when i pulled out of O'Reilys it started doing it again... Does anyone have any ideas as to what it COULD be and what i could check?
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10-31-2009, 10:25 AM
#9
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I would check the plugs for cracks. Also make sure a wire didn't touch the headers and burn through.
The flashing ses light does mean a misfire. My turbo gp did that. I scaned it with hptuner. The light would flash and it would show misfires. If you get on it and the light flashes and you stay wot, the light will just stay on. But don't do that. Trust me.
The flashing ses light does mean a misfire. My turbo gp did that. I scaned it with hptuner. The light would flash and it would show misfires. If you get on it and the light flashes and you stay wot, the light will just stay on. But don't do that. Trust me.
10-31-2009, 10:31 AM
#10
well 2 different people told me that they've experienced the same problem before and it was due to one of the O2's going out. Well, one of the guys said he was driving his car in the rain and the O2's go soaked and it was doing the same thing as i discribed.
