Engine Performance problem
2001 Chevy Silverado V8 Two Wheel Drive Automatic 142000 miles
My truck has been running bad for two weeks now and with the help of others I still can't find the problem.
It idles in park fairly well, though I do hear a slight miss, but nothing too serious. It did die idling once, in the past two weeks but that was it. I heard a rattle that appeared to be coming from the Cats so I changed those, though it still seems to rattle a little when the truck isn't warmed up completely. While I'm driving it drives at a constant speed just fine, and above 3000rpm it acclerates fairly well(not perfect) but when I'm in the 1500-3000 range( the range it drives in mostly) and I step on the gas, there is no power. Go to pass someone and no power and it never tries to downshift. It barely revs up at all.
Oh and it isn't throwing the "service engine light". It did once but just shortly after the Cats were put on and then it went away.
I've put in new
Spark Plugs & Wires
Cleaned the KN Air Filter
Tried gas Treatment(though I don't really believe in them)
Problems people have suggested:
Fuel Pump (though I would think it just wouldn't start if the pump was out and I can hear the pump)
Throttle Position Sensor
Fuel Pressure Regulator
Please if anyone could help it would be greatly appreciated. Even if its to debunk one of the ideas someone else may have given me.
have the same problem?
Tuesday, October 21st, 2008 AT 5:35 PM