1997 Chevy Suburban V8 Four Wheel Drive Automatic 190, 00 miles
My '97 Suburban seems to have no power. It has the 5.7L Vortec. I purchased it this way for little to nothing, thinking it was the transmission, and figured I would drive it until the transmission went completely out, then replace it, but it still has not gone. I have put nearly 10k miles on it since I purchased it. With the lack of power, it just took a while to get up to speed, so I just lived with the problem since it was my secondary vehicle and barely drove it. I am starting to drive it now more because its winter and 4x4. I am beginning to think it is not the transmission now. When I accelerate, it feels like there is nothing there. When I push on the gas pedal, the RPM needle does not "jump" like it should. I can get up to speed, but it takes a while if I nurse the pedal. It appears that the transmission is shifting smoothly, almost flawlessly, going through all of the gears, unless you push the pedal to the floor. I have to let off the gas for the trasmission to shift into the next gear at WOT when the RPM gets to the shifting point. Even at WOT, the RPM does not move nearly as fast as I think it should to get to the shifting point. There is no passing power, as I cannot push the pedal to the floor to get the proper response. I had not received any SES lights until the other day. It was cold, possibly under 10 degrees, and I was having a hard time getting up to speed. The engine shuttered at around 40-45 MPH and the SES light came on. I checked the codes with my OBDII tester and got these two codes: P0131 and P0151. Once this happened, the vehicle appeared more sluggish than normal. I could barely get past 45 MPH after this, with almost no engine response from the gas pedal. The codes were then cleared by me. After the vehicle was turned off and sat for a while, it returned back to its "normal" state where it still took some nursing to get up to 65, but it still got there. It has never returned to the 100% normal state. Some days are better than others. I received another error code just yesterday, which was just P0141, and not the other two. My friend was driving the vehicle at the time and said that he did not feel it shutter and that he believes the light just came on. When the vehicle is in park, I can push on the pedal and the RPM needle moves as it should (with maybe a little sputtering?) And it feels like there is proper air flow through the exhaust (according to a friend who is more car savy than me). I use Super Unleaded (ethanol) gasoline. I'm not sure if that information helps at all. What are some possible cures to the problem or problems I am having?
have the same problem?
Thursday, January 7th, 2010 AT 3:36 PM