LexusKen300

really sorry for the late reply. got caught up in work there bah.

it idols about the same. from neutral about 1k rpm, and when the ac is turned on it jumps like 1 little bar... neglectable really.

sorry that that doesnt help very much but at least you know it could very well just be from the leak. =/

Thank you any information helps.

That would be great, I was recalling from the little education I had in engine performance. I've been out of the mechanics scene for a bit, so any info would help.

I just recently purchased a 96 es300 as a great price.

The engine is running very well and the mileage is relatively low for the year.

I did have a egr flow code and change the egr vacuum module and cleaned the valve with some seafoam ran through a vacuum line. So far it seemed to have cleared the code. But, that was just yesterday so we will see.

My main concern though was I have an audible vacuum leak when the AC is on while in park or at idle. Also some things i noticed is the car is actually idling lower when the ac is on, and idles higher when the ac switch is turned off. To my memory that is the opposite of what is suppose to happen.

If anyone has any suggestions please help and thank you.