ses code and running and rough at idle

[mike 1985]

I own a 85 and changed the plugs and replaced the valve cover gasket on the pass side. When i finished the car was rough starting and the SES light is on. Plus the fan is running ? Is this normal with the SES light on ? I need to pull the codes and see what's going on, but i'm thinking it's a vacume line ?

Anybody have any suggestions ?

Oh and the car seems to be rich?


Also once i get the problem fixed do i have to reset the ecm by unhooking the battery before the car will run better?

 

[vader86]

Pull the codes before you do anything.

 

[mike 1985]

thanks

 

[BlackNBlue95]

Yes pull the code(S) first and let us know what you found did you perhaps not have a plug wire clicked in to the plug all the way or something because if that happend.. you could have a miss fired and hence the running "Rich" because of un burned Hydro Carbons....
-Rick

 

[mike 1985]

thanks

Apparently there is a sensor beside the coolant sensor. Below the throttle boddy and to the right of the coolant sensor that was unplugged from taking off the valve cover.

All is good now.




I do have another question though as i'm new to a corvette. I checked my car code and i apparently have the G92 performance axle with the 3.07 gear ratio. What i was wondering ws how to tell if it's a dana 36 or 44.

 

[BlackNBlue95]

Re: thanks

Apparently there is a sensor beside the coolant sensor. Below the throttle boddy and to the right of the coolant sensor that was unplugged from taking off the valve cover.

All is good now.




I do have another question though as i'm new to a corvette. I checked my car code and i apparently have the G92 performance axle with the 3.07 gear ratio. What i was wondering ws how to tell if it's a dana 36 or 44.

If it's an auto it's a dana 36 or should be, 3.07 is usually the HP gear for the auto's and is a 36 carrier..

That coolant sensor probably is the sensor for the ECM to tell it the engine temp obviously and if it's un plugged I think it runs in open loop..
-Rick