Quote:
Originally Posted by JL8Jeff
Check things like the AIR check valves to make sure they are working properly. I've seen a few of the AIR check valves stop working and it allows air into the exhaust that the computer isn't expecting and will throw off the O2 readings and make the computer make bad adjustments. Also, did the car really have 2 different types of plugs in it? The AC's look like platinum or irridium, but the NGK's look like regular plugs. Also check the EVAP lines and valves to make sure it's not sucking additional air constantly from the tank. It almost sounds like you have a vacuum/air leak on the driver's side throwing off the O2 readings and the cat is running hotter as well.
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It's funny you mention a vacuum leak. Check this out:
I was fixing my driver side headlight motor gear and noticed these tubes just chilling (Pardon the cell phone shot):
One smaller tube attaches to the large tube and goes back towards the wheel well and is attached. Another smaller tube is also attached to the large tube (on the side) which you can see and goes to nothing at the moment.
I taped up the end so it's not open to air at the moment.
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-Rick (Photographer)
- 2001 Trans AM WS6 - M6, ORY, Borla catback, etc.
- 1998 Trans Am - M6, functional Ram Air hood, Flowmaster, 3" QTP E-cutout, ORY, K&N FIPK, 3.42's, LSD, Hella 60mm Projectors, 4300K HID's & more.
- 2003 VW Golf TDI - Turbo diesel @ 50 MPG highway
- 1998 Jeep Grand Cherokee 5.9L(ZJ) - 4.75" lift, 32" MTZ's, armor, etc.
Last edited by GhostDakota; 11-25-2012 at 10:58 AM.
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