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WydRyd WydRyd is offline
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Originally Posted by 930gt-40r View Post
I am pretty sure that the o2 doesnt get factored into the mix untill running temp. The CHT is defenatly somthing that I would look at.
The O2 sensor does have an integrated heating element to bring it up to operating temps quicker for DME input.

Also, the O2 sensor is only really effective at idle and part throttle. At WOT, the DME ignores the input.

Having a dud O2 sensor doesn't really cause the issue you are experiencing Greg. I've run without an O2 sensor for many years and I have no issues whatsoever.

The CHt sensor on the other hand is an integral part of the EFI system. If that goes bad, and they usually do, it can cause all sorts of intermittent issues. Disconnect it from the harness and your car will never start. I would put my money on the CHT sensor going bad as it warms up.

It's a wise idea to remove the old single wire unit and fit a more updated 2 wire sensor. Be warned, it's a pain in the @ss to get to, but well worth the peace of mind of running a new 2 wire unit.
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Old 01-13-2008, 03:00 PM
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