5.0 and 5.7 Discussion, 1989 Brougham check engine light? in Cadillac Engine Discussion; Originally Posted by joe_padavano
Rather than randomly disconnecting stuff, why not read the stored codes and make an intelligent diagnosis? ...
Automobile(s): '80 Fleetwood Coupe, 1994 and 1995 Mercedes 140 Coupe
Re: 1989 Brougham check engine light?
Originally Posted by joe_padavano
Rather than randomly disconnecting stuff, why not read the stored codes and make an intelligent diagnosis? Jumper the two top RH terminals of the ALDL connector together and the check engine light will flash with the trouble codes (assuming you haven't removed the bulb as others have suggested).
Who's doing anything randomly? Re-read the thread. He got a code 31. Canistor purge valves shorting was a known issue in that era.
Off and warmer trick does not work on 307 cars. Riding around with the engine lamp on is a good way to land up on the back of a hook. It would be different if the problem were known and was something that could let the car fly without going into open loop.
Yeah...my old mechanic taught me to use a paper clip to read them out of the data port under the ashtray. the two top right holes.