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brythefly · 08-05-2007, 12:12 PM

thanks, that makes sense, i trashed the cat but i might end up buying one soon. I just checked my codes and got code 21. When it cools down at night the truck runs pretty bad, so im thinking the o2 sensor is out, is there a way to check the sensor before spending the 60 bucks for a new one?

Ive checked my wires and they dont seem to be melted/damaged. The sensor is stock as far as i know and i have about 204k on the truck so im sure its prob worth getting a new sensor.

i want to see how it runs after working out the o2 sensor first, and if i still have similar problems i may reduce my pipe size and/or add a cat.

08-05-2007, 12:12 PM	#11 (permalink)
brythefly Registered User Join Date: Aug 2007 Location: Colorado Posts: 22	thanks, that makes sense, i trashed the cat but i might end up buying one soon. I just checked my codes and got code 21. When it cools down at night the truck runs pretty bad, so im thinking the o2 sensor is out, is there a way to check the sensor before spending the 60 bucks for a new one? Ive checked my wires and they dont seem to be melted/damaged. The sensor is stock as far as i know and i have about 204k on the truck so im sure its prob worth getting a new sensor. i want to see how it runs after working out the o2 sensor first, and if i still have similar problems i may reduce my pipe size and/or add a cat.