The other day I power-washed the engine compartment to remove the over-spray and grime.

I've developed a bad mis-fire to the point where the PCM is dumping fuel into the cylinders to richen the mixture.

I've heard that getting the opti wet will wipe it out. Powerwashing the engine will definitely get the opti wet.

I put the car into open loop to bypass the O2 sensors and the MAF sensor. It runs terrible. Barely idles, stumbles, backfires.

I think the opti is going bad.

How can I tell if it's the opti's going bad?

Any other suggestions?

 

I'd bet all I had it's the opti. I'd just replace it.

 

Opti+water= R.I.P.

 

Water in the opti !! Some times you get lucky and let it dry out and the car still runs. Sometimes you don't.

 

What I did was sealed the opti with clear winsheld silicone. No worries!!!

 

It was tha MAF sensor. It wasn't reading enough air. I swapped it out today and it runs great and the BLMs are fight where they need to be.

Thanks for the help.

Ed