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Showing results for tags 'p0151'.
Have a few questions, wonder if any of you have some ideas or input on them... I have an 2003 Chevrolet Silverado 2500HD 4wd with the 6.0L Vortec (U code for VIN) and has about 179K miles on it. The truck was getting a check engine code of P0101, MAF Sensor, I replaced that one and now I am getting the below codes, on and off... P0131 Oxygen Sensor Circuit Low Voltage (B1S1) P0151 O2 Sensor Circuit Low B2S1 P0327 Knock Sensor DTC Code P0332 Knock Sensor 2 Circuit Low (Bank 2) Everything except P0327 (normally stays on during normal driving) comes up when I floor the gas on the highway. But when going around 65 - 70 mph at 2000rpm, and gives full throttle, the truck down shifts to 3000 rpm first and then once more down to 4000 rpm, but there is no torque... truck actually slows down going uphill instead and does not go above 4000 rpm. Should I bite the bullet and change the knock sensors and O2 sensors as well? I got the suggestion that it could be clogged cats, but it's not idling or running rough... Any ideas?
2000 GMC Jimmy 4.3 Vortec 4WD ~215,xxx Engine starts, runs/revs in park but will stumble and miss off idle in drive. It wont stumble all the time though, sometimes it will run perfectly fine. Occasionally while driving in overdrive the engine will lose power, throttle does nothing, and drop to idle and begin stumbling and backfiring. After this happens if you let it sit for a few minutes it will start and run fine. Also this loss of power only occurs in overdrive, if I drive around in 3rd it runs fine. Fuel pump was replaced ~3 years ago Fuel filter ~3 months ago IM gaskets ~5 months ago (due to a coolant leak) Radiator ~8 months ago (cracked) Had codes pulled p0101, p0151, p0717, p0174 Anything you guys have would be great! Thanks!
I have a 2003 silverado and am having issues. When i first start truck it will miss and sputter and idle will fluctuate for 10 to 15 seconds then will smooth out. when on road at WOT it loses power, feels very restricted, rough runs, misses and the check engine light comes on. Pull code and it is p0151 and p1031. the o2 sensors have been replaced. Any clues as to what i could look for? Could a leak in the intake cause that or a bad fuel pressure regulator? HELP!!!