check engine light comes on randomly

daveskatesallday · Post by **daveskatesallday** » Sat Jul 07, 2012 9:29 pm

lately i've noticed when i'm on the highway my check engine light comes on for about 20-30 seconds maybe a minute at most and then it goes away. Every time it comes on nothing happens to the car, it drives completely perfect. What could be causing this??

JDM AE86 · Post by **JDM AE86** » Sat Jul 07, 2012 10:04 pm

You have to jump out at 60mph and check the engine like it is asking.

What about temp? Im not sure if high temp will trigger a CEL.

daveskatesallday · Post by **daveskatesallday** » Sat Jul 07, 2012 10:08 pm

sadly im not superman haha

but temps seem to be fine it's not over heating or anything like that

Kaidotech · Post by **Kaidotech** » Sun Jul 08, 2012 10:12 am

My old F150 did this a few times. Turned out to be a bad ground.

McKenney · Post by **McKenney** » Sun Jul 08, 2012 9:43 pm

Mine did it because the egr stuck open

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daveskatesallday · Post by **daveskatesallday** » Tue Jul 10, 2012 10:39 pm

i haven't found anything out of the ordinary YET i'll check grounds again though

a.k.a.vene · Post by **a.k.a.vene** » Wed Jul 11, 2012 5:31 pm

Did you get the second piece of the header made and put on? If not,that's it right there. Mine did it when I had the a crack just after where the second piece header bolts up to the cat.

mbehrens · Post by **mbehrens** » Fri Jul 13, 2012 3:13 pm

Jump to comectors and count the blinks the check light comes on I cant remember what year harness you got tell me Nd ill tell you the pins on the cinector to jump and if the light is of you still can get a code for instant my light off jump the connector it I have 7 blinks thats tps out of range lol... Actually call me ill give you a hand lol

luisae86 · Post by **luisae86** » Sat Jul 14, 2012 7:42 am

mine did that constantly found it was the alternator plug kept popping out and i ended up zipting it in place as temp fix but i plan and putting a small bead of silicone on the connector and pushing it back in so it stays there

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