Check engine light

RS2600

Registered User
After driving my 91 SC for about 20 min the check engine light comes on. Car runs the same and after 10 min and a couple of hard pulls the light goes out.
It might come on again but not always. Any thoughts?
 

RS2600

Registered User
No don't know anybody that has an obd1 reader. Was just out driving for an hour and no light came on, strange
 

KMT

Registered User
No don't know anybody that has an obd1 reader. Was just out driving for an hour and no light came on, strange

Codes can be pulled without one if you care to try...

See:

Otherwise, I believe Autozone wants as little as $30 - a nice tool that will be invaluable for any SC owner, I think.
 

RS2600

Registered User
I had the code checked today and I have 172 EGO non switchin Lean exhaust right side - bank 1 and 225 No knock signal during self test.
I'm not too concerned about the 225 but I have problems with finding where the EGO is located on the car. Any pictures will help.
 

KMT

Registered User
Bit clearer image:
1620046410250.png

And yes, at this time you can ignore the knock sensor code.
 
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