"Service Engine Soon" Light

[Mr. Luos]

Originally Posted by FormulaLT1

Except your light doesn't say check engine(although if I had yours I would be checking it every ten minutes) it says check yourself.

Pretty much, yeah.

I get P0300 a lot. Lopey idle tends to do that.

[hotrod_chevyz]

you see what i thought if the original wiring.Oh and the exhaust...No more check engine light hahaha!

[FormulaLT1]

What am I looking at? Is this one of those things that if you stair at it long enough it makes sense?

[hotrod_chevyz]

Thats the wiring harness that goes from the computer inside,out through the passenger fender to the motor.What you looking at is a wiring connector that went from inside to the outside of the car.It had about fourty wires going to it now its just a useless lump inside my fender well.

[hotrod_chevyz]

Oh and those familiar with the gen threes will notice it has no exhaust where all of them did wich in the picture would be any place you can see the ground.

[SlackZac]

I have purchased two ignition coils and will install them this weekend. I hope it works, but from the sound of some of these posts, I probably shouldn't be optimistic.

[hotrod_chevyz]

It should run better but i dont know if it will help the check engine light or not.

[SlackZac]

my mechanic has offered to reset the code on the service engine light for me if I did the work myself. of course, it's irrelevant it the coils aren't the problem.

back to square one then, I suppose.

worst part is my inspection was due in january and i can't get it done until this issue is resolved.

[SlackZac]

I was able to replace the remaining two ignition coils myself. Didn't take care of the problem. I can't wait to see what they can find next! THis is a nice Pandora's Box. And a black hole for my money.

[LE12345671]

My 96 3.8 had the same problems. I can almost gurantee it is the fuel pump. It is what it was on mine and i know a few other cases. A fuel pump issues won't create a code in our year (that was added on later) The code is being set by the misfires. Sometimes it is the fuel pump relay tho. It's about $20 or so and it's an easy install... once u find the relay (which after much searching is under the driver's side door panel by the hood release). The relay didn't help me... it was the fuel pump. Honestly, I would get the fuel pump checked out. They can tell you if it's working properly before you go and spend the $ on this.

[SlackZac]

thanks. i will definetely check that. the service engine light is actually off for the moment. but it's still running very rough.