Chevy Impala SS Forum banner
1 - 4 of 4 Posts

·
Registered
Joined
·
619 Posts
Discussion Starter · #1 ·
Parked the car today around 3. Moved it around 730 and the service engine light was on. There were no current codes on my code reader, but in the code history is 78 (number 2 cooling fan). When I clear it it comes right back on. Both cooling fans are on as soon as I start the car. It runs fine, but obviously something is wrong. Any ideas?
 

·
Registered
Joined
·
619 Posts
Discussion Starter · #3 ·
I swapped them out, but didnt clear the code. Nothing changed. I will swap em and clear the code tomorrow. I think I have an extra secondary fan laying around so I may throw that in. Its weird, the car actually seemed to be running better than usual tonite which scares me, lol.
Thanks for the help.
 

·
Registered
Joined
·
619 Posts
Discussion Starter · #5 ·
Changed the sensor on the front of the water pump. No change. Cleared the codes and then got a code for maf/map sensor. Cleaned the maf, still no change. Changed the map sensor and all is well. BUT, the fans still come right on. No check engine light though. Guess we will see what happens tomorrow.
 
1 - 4 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top