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?
codes codes codes, if the SES light flashes its bascially like an emergency thing i guess. i doubt plugs would do it, sounds like a fuel delivery problem.
__________________ 2005 Black/Tan CTS-V, K&N Intake, Skip Shift Eliminator, Specter Werkes Spoiler, Muffler Delete, Superchips Handheld, the rest is stock, for "now"........13.6@108 with crappy 2.295 60'
1998 Camaro SS Arctic White A4- slpLoudmouth, lid,ory pipe, vigilante 3600 stall, 4.10s, TNT F1 150 Shot, Line Lock-SOLD!!!!! 11.6@118 on 100 shot
codes codes codes, if the SES light flashes its bascially like an emergency thing i guess. i doubt plugs would do it, sounds like a fuel delivery problem.
Would Autozone or another parts store be able to check the codes?? It wouldn't be a good idea to drive it to far and there is an Autozone just down the road from me.
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.
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Originally Posted by JDJP
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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?
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.
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.
bosch is what they sell at autozone which i believe is an oem product. one o2 really isnt better then another IMO. no one sells high performance o2 sensors lol.
__________________ 2005 Black/Tan CTS-V, K&N Intake, Skip Shift Eliminator, Specter Werkes Spoiler, Muffler Delete, Superchips Handheld, the rest is stock, for "now"........13.6@108 with crappy 2.295 60'
1998 Camaro SS Arctic White A4- slpLoudmouth, lid,ory pipe, vigilante 3600 stall, 4.10s, TNT F1 150 Shot, Line Lock-SOLD!!!!! 11.6@118 on 100 shot
Car started having problems (misfires and almost dies at idle) 
1999 A4 Z/28= SLP Lid, Free Ram air, SLP lm1, pacesetter headers, ory, msd/ngk tr-55, TB bypass, Ported TB, Tuned by Frost, 6k proj hids..
