Something is wrong with my truck. I get bad gas mileage
#1
Something is wrong with my truck. I get bad gas mileage
Alright, for the 1,000th time I need help with gas mileage. Driving my truck like a grandma... and say 70% City and 30% highway. My last fill up... 11.9. Something has got to be wrong. Its a 2wd, 5.2. I did the plenum..
I unplugged the original pre cat o2 sensor, and let it idle for about 15 minutes. Nothing happened. The RPMs didnt change, no CELs.
Ive given the truck a complete tune up, rotor, dist, wires, plugs, K&N filter....
I was thinking maybe MAP sensor or the 02 sensor. Any ideas?
Its got 81,000 original miles..
I unplugged the original pre cat o2 sensor, and let it idle for about 15 minutes. Nothing happened. The RPMs didnt change, no CELs.
Ive given the truck a complete tune up, rotor, dist, wires, plugs, K&N filter....
I was thinking maybe MAP sensor or the 02 sensor. Any ideas?
Its got 81,000 original miles..
#5
unless you've got a lead foot and/or huge tires, you should get at least 13. if you're current on tune up - try replacing the front O2. i just replaced mine and naturally ordered the wrong one. my plug is square and i bought the round one.
you can follow the wire up to the connector that's conveniently snapped into a connector on top of the transmission, and see which one you have. it was obvious that i was going to either break the plug, or break the plastic stud that holds it in place, so i cut the stud so i could turn the connector to where i could see it. slide the red tab out, and then sort of pinch it.
mine had 4 wires. i think it was 2 whites, 1 black and 1 gray. i ended up just splicing my old connector onto the new O2.
you can follow the wire up to the connector that's conveniently snapped into a connector on top of the transmission, and see which one you have. it was obvious that i was going to either break the plug, or break the plastic stud that holds it in place, so i cut the stud so i could turn the connector to where i could see it. slide the red tab out, and then sort of pinch it.
mine had 4 wires. i think it was 2 whites, 1 black and 1 gray. i ended up just splicing my old connector onto the new O2.
Last edited by dhvaughan; 05-31-2010 at 08:58 PM.
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