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  #1  
Old 04-13-2008, 09:06 PM
mel_woos mel_woos is offline
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1996 S10 2.2 2WD Truck

1996 S10 2.2 2WD Truck

Daily driver to and from work 3.5 miles. I do this run 3 times a day. When I drive 30+ mile one way, freeway/highway, on the return run P0137 activates SES. SES clears within 4 - 5 days if driving to and from work 3.5 miles.

New OS. HOS, temperature sensor located under new 180 degree thermostat(original was 180).
Any idea way P0137 trips?
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Old 04-16-2008, 02:39 PM
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MT-2500 MT-2500 is offline
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Re: 1996 S10 2.2 2WD Truck

Could be several things.
Weak 02 sensor /02 sensor heater circuit or wiring and plug in or even VCM/PCM computer problem.
Engine running problem can also cause the code.

Needs proper testing and put on a good engine capable scanner that will read out and test 02 sensor.
Any other codes?
MT
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Old 04-22-2008, 03:38 PM
mel_woos mel_woos is offline
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Re: 1996 S10 2.2 2WD Truck

No. No other codes. I guess I could switch OS/HOS back to old ones and compare results. That's a cheap test.
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