I've had intake manifold gaskets go bad. Starter fluid sprayed around the gasket confirmed the issue by the engine speeding up. Or a hose up to the ear listening for a hissing sound.
Probably not your issue but I got a rich lean code by installing the oxygen sensor
in the wrong location. Installed in the converter and not the down pipe.
The timeline of how long to disconnect the batterie is a mystery to me. I read a post where someone would leave the batterie disconnected for 20 minutes as a solution. I believe them but what is the ecu doing in that time?
|