SES Light won't go off
 

I have been having trouble with my car, so I finaly figured out that I had 2 bad injectors. So after changing them it seemed to straighten the car up a little. By the way it is a 1991 Z28 TPI 305.
Heres my problem, after installing the injectors ang putting the car back together my SES light came on and the code checked out to be a coolant temperature sensor. So I went to Advance Auto and picked up a new one. Put the new one in and still to no prevail the light it still ther and it stillreads a code 15.
Does anyone know what could be the cause for the SES light other than the temperature sensor on a code 15? Thanks for the help.

It could be the CTS circuit, not necessarily the CTS itself.

Re: SES Light won't go off
 

did you reset the codes by disconnecting your battery for a minute? THe codes wont dissapear until you do that, if they pop up again then you may want to check the cts circuit like five7kid suggests

He's saying the light is still coming on, which isn't the same as the codes not being cleared.

Re: SES Light won't go off
 

Yes, but as you know, maybe the original poster doesn't, if the battery is not disconnected for a minute or so, the codes will not clear. Simply unplugging the injectors, replacing the (I know, lots of parts hafta be removed to do this) the code will not clear from the ECM without disconnecting the battery.

But, he said the light is still coming on.

Understand if the codes aren't cleared you'll get the same code coming up even if the problem has been fixed and the light isn't coming on anymore. But, if the light is coming on, and that is the only code in memory, it's the same problem.

Re: SES Light won't go off
 

Alright, so I feel kind of dumb....When I was throwing in the new injectors I pulles one of the wires out of the connector going to CTS......Thanks for all the help though