Running Rich

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Running Rich

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Running Rich - 9/28/2005 1:03:25 PM

Tibbs

Posts: 7
Joined: 9/27/2005
Status: offline

Having troubles with a 1992 Classic running very rich. Plugs look sooty and it's fouling the oxygen sensors. After the "Check Engine" light comes on, it smooths out and runs better. I replaced both sensors with Bosch / NTK from Napa but they get blackened and start giving 44 and 45 codes too. I also replaced the idle air valve / stepper motor but still running rich. This truck sat in a field for three years after an altercation with a deer. Any thoughts? By the way, nice tech forum. Lots of good reading.

Post #: 1

RE: Running Rich - 10/1/2005 10:08:43 PM

Bait

Posts: 631
Joined: 1/13/2005
From: USA
Status: offline

quote:

By the way, nice tech forum. Lots of good reading.

Hey Thanks

Do you have any drivability problems ?

quote:

This truck sat in a field for three years

That statement would point me to rust. Check the fuel filter. It's on the right rear frame rail. take it off and see if a lot of rust comes out. It may be very difficult to get off. They tend to rust up . A kit is available to replace the lines, holder and all. The rust gets forced thru the filter and clogs the injectors open.

Let us know how you make out.

(in reply to Tibbs)

Post #: 2