SES Light???

[Colin]

Okay. Story goes (I've had this problem for a while, so I have posts all over the place)...my car's been running rough. It'll run horribly when it first starts and then smooth out when it gets warmed up, but will still jerk/jolt/buck/whatever at high rpms (not a cyclical motion - very sporattic). I've tried lots of fuel system cleaners, etc. In the last year to year and a half I've replaced all plugs and wires, AIR pump, PCV valve, IAC valve, and cleaned the throttle body. Mind you, I've NEVER managed to throw a code....'till today - I think. I was at a stop light, idling rough at normal operating temp w/the A/C on and the SES light comes on for like 5-7 seconds and then goes away and doesn't come on for the rest of the drive home (<1 mile). My question is...LOL...did I throw a code and if so, will a diagnostic computer still be able to read it if the light is not on anymore?

[RadRacer]

Re: SES Light???

yep, it'll be saved as history probably. PLus, since it's running rough, go ahead and get it scanned, some stuff won't trigger a SES light, and others may come up as pending.

[Christopherrr]

Re: SES Light???

No all symptoms will throw a code. Since you saw the SES flash, I agree to get a scanner on it and see what the intermitted problem might be.

Seems like you replaced a lot of things...one thing does come to mind though; you ever check the coil packs? Though you said ti get better as it heats up...a failing coil pack tends to malfunction as it heats up. But it's worth a check. At least that would eliminate any ignition aspect.