1988 Olds Delta88
I just picked up a 1988 Olds Delta88 w/64000 miles from my Mom.
Yesterday, I drove it from Chicago to Minneapolis,
439 miles door to door. The engine sounds great, but
I was getting an occasional "SES" light during the trip.
Also, I felt a thump a couple times when the light came on.
I just pulled the codes this morning using the paper clip method. (These old cars are kinda neat).
13 Oxygen sensor Circuit
Check for a sticking or misadjusted throttle position sensor. Check the wiring and connectors from the oxygen sensor. Replace the oxygen sensor.
41 EST circuit
No distributor reference pulses to the ECM at specified engine vacuum
Can you tell me if these two are related?
There was no recommended action for the code 41, not sure what to do?
Also, where is the oxygen sensor(s) and throttle position sensor? Is this easy to check?