Check engine light on

[KenC]

I started up my freshly rebuilt M42 yesterday, and the check engine light won't go off.

The car runs, drives and idles like an absolute dream, I don't know what could be causing the light to come on.

Any ideas? Is there a way to "reset" it?

No, I haven't done the stomp test.

[Simon S]

I take the SI lights had already been reset?

hmmm.. keep us posted after the stomp test..

[Farbin Kaiber]

Bad injector? ;)

[KenC]

Actually the SI is just the one red light. Maybe those need to be reset and the check engine will go off?

[monty23psk]

SI lights should have nothing to do with CEL. You need to do a stomp test to see what error code it gives for the CEL. Search for stomp test to get the procedures.

[KenC]

Used the code reader. Forgot to plug in the sensor on the charcoal canister.

[Danny]

So its fixed? If not, I'd recommend disconnecting the battery overnight.

[KenC]

Yeah, check engine light's out now after I plugged that sensor in.

[92ragtop]

anbody know where to find out what the codes mean 1271

[92ragtop]

light comes on at idle goes off immediately when throttle cracked , idles ruff on start up