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Old 12-11-2007, 15:52   #1 (permalink)
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Check Engine Light 2000 Mountaineer

Sympton:
-Check Engine Light
-Car starts fine, but then immediately rattles/shakes as if not getting enough fuel.
-After pumping gas for a few seconds, car functions normally

Diagnosis:
-OBD-II Sensor Reading P0174
-According to Autzone database, problem could be:
--Ignition misfire condition
--Failed H0252
--Fuel injector problem
--Engine Mechanical Condition

If any of you have had this similiar problem, please let me know if you have any suggestions.
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Old 12-11-2007, 17:27   #2 (permalink)
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Re: Check Engine Light 2000 Mountaineer

I had a similar issue previously but without the check engine light. When I would start it up I'd have to feed it gas to keep it running. I replaced the Idol Air Control Valve and haven't had a problem since. I would try replacing that. It's around $40 at Autozone and an easy fix.
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Old 12-13-2007, 16:16   #3 (permalink)
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Re: Check Engine Light 2000 Mountaineer

I ended up fixing the problem by replacing the bank 2, 1st oxygen sensor. This sensor is locating in the engine compartment, driver side, under the exhaust manifold. It is inserted into the exhaust line before the catalytic converter.

I had to put the truck on a lift in order to get to the O2 sensor.

Total cost: $60
Estimated repair time: < 5 minutes (after lifting car and locating part)
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2000 Mountaineer 2x4 cyl
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