mlm0

1989 auto. I want to disconnect the air tube from the converter at the air pump itself. Not sure what I need to do and won't that put too much back pressure on the punp I want to leave pump on incase I need to attach air line in future. Main cat will be removed and saved also

Cliff Harris

Just leave the output from the A.I.R. pump open. It won't hurt anything. Mine has a short rubber hose right near the #2 spark plug that connects to the converter pipe.

I don't know what the default air connection for the A.I.R. diverter valves is. You might be able to just disconnect the electrical connectors. The options are: Air goes to exhaust manifolds. Air goes to atmosphere. Air goes to catalytic converter. If the air goes to the atmosphere then you're set.

Rockcrushervette

Hi Cliff this is Cliff! So when that diverter goes to atmosphere could it make a whistle sound when you let off high exceliration ? Doesn't do this all the time maybe warm days certan driving conditions?

mlm0

Looking at my FSM I shiuld only have to unplug the converter solenoid at the air pump. Doing this should allow air to be diverted from going to hose to converter out to atmosphere