Can bad EGR cause trnsmission problems?
I have the MH listed in my signature i.e. Chevy 454 P series with I believe the 4L80E transmission. Recently experienced problem with not shifting into overdrive and intermittent Check Engine light. ...
Forum Discussion
Ask any ECU diagnostician...
"Do you have substitution parts for troubleshooting?"
Of course they do. OBD error code diagnosis is not cut and dried. I watched a top-tier diagnostician (Ed's Auto Electric - Lancaster, CA) go through a procedure with a car. Narrowing the field a substitute TPS, then MAP, followed by CPS, led him to a firewall bulkhead failed connector. End result - no failed parts, bad connector.
Without factory technical service bulletins the process is mostly guesswork. Without verification of vacuum values "guesswork" advances to almost total blindness.
"Do you have substitution parts for troubleshooting?"
Of course they do. OBD error code diagnosis is not cut and dried. I watched a top-tier diagnostician (Ed's Auto Electric - Lancaster, CA) go through a procedure with a car. Narrowing the field a substitute TPS, then MAP, followed by CPS, led him to a firewall bulkhead failed connector. End result - no failed parts, bad connector.
Without factory technical service bulletins the process is mostly guesswork. Without verification of vacuum values "guesswork" advances to almost total blindness.
