taznj63
11-07-2003, 19:33
I have a 92 GMC Sierra 6.5 Auto 4L80E and my check engine light is on when engine is cold.
Light then flikers off/on at 2000 rpm and less when warming up. Then goes out at lower rpms as engine reaches temp. when engine is at temp, light is out.
No codes in ecm...
Could this be some kind of temp sensor?
Also notice lockup convertor will not work when light is on and I can feel it locking in and out when light flikers.
Any help???
Thanks...
[ 11-13-2003, 07:05 PM: Message edited by: taznj63 ]
Light then flikers off/on at 2000 rpm and less when warming up. Then goes out at lower rpms as engine reaches temp. when engine is at temp, light is out.
No codes in ecm...
Could this be some kind of temp sensor?
Also notice lockup convertor will not work when light is on and I can feel it locking in and out when light flikers.
Any help???
Thanks...
[ 11-13-2003, 07:05 PM: Message edited by: taznj63 ]