2001 Sunfire check engine light on

homerr · #1 10-13-2005, 05:57 AM

Hello,
Last night I put some feul injection cleaner in and drove 20 km. The tank was not quite half full. So I only put half in. Drove about 15km this morning and now the check engine light is on. Will check it after work. I check the cap and it is tight.
Any ideas ??, Should I be worried??

Homerr

PS: I will keep you informed as what happens. Also I noticed from time-to-time my TC light comes on then goes out (not related, I know that much).

maxwedge · #2 10-13-2005, 02:01 PM

make sure the gas cap in tight.

homerr · #3 10-13-2005, 02:07 PM

I did that as it is in my post.

maxwedge · #4 10-13-2005, 04:39 PM

Didn't see it, ok now get it scanned and post back the codes.

homerr · #5 10-17-2005, 08:28 AM

Solved ! !!
When we were out delivering flyers, the car starting to hesitate and the RPMs would go down then back to normal. So I decide to go back home to see what was going on. On the way back home I could hear a ‘snapping’ sound under the hood. When I go back home, there was a blue spark coming out from the second spark plug wire on the module. I took it off and the contact on the module was totally rusted. I have never seen anything like that before. It took me over a half hour with sand paper to clean it off. Cleaned inside the spark plug wire as well and started the engine and all is fine and the light went out.

homerr

maxwedge · #6 10-17-2005, 08:41 AM

Get some dielectric grease and use it on the coil connections ans wire/stud connections.

homerr · #7 10-20-2005, 06:56 AM

It started 'snapping' again. Put my hand about 1 inch by the module/coil packs and got lifted. Drank two beers. Then replaced spark plug wires with proper grease on the connections and all is perfect (for now).

Homerr

GMMerlin · #8 10-20-2005, 07:49 PM

Quote:

Originally Posted by homerr

Solved ! !!
When we were out delivering flyers, the car starting to hesitate and the RPMs would go down then back to normal. So I decide to go back home to see what was going on. On the way back home I could hear a ‘snapping’ sound under the hood. When I go back home, there was a blue spark coming out from the second spark plug wire on the module. I took it off and the contact on the module was totally rusted. I have never seen anything like that before. It took me over a half hour with sand paper to clean it off. Cleaned inside the spark plug wire as well and started the engine and all is fine and the light went out.

homerr

The "rust" is called micro arcing.
You need to replace the coil as well as the wires.

homerr · #9 10-21-2005, 06:14 AM

Thanks GMMerlin for your reply. If something else happens then I will know to check the coil pack.

Homerr

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