1998 Jeep Laredo 6 cyl Four Wheel Drive Automatic 130358 miles
ok I have been having problems with my grand cherokee laredo. At first it wouldnt start. Then we foind a cracked vacuum line and it started right up. A few days later as I was driving down the road at 55mph it started to buck and sputter and acted like and it was like it was trying to cut off on me. Well the CEL came on and I had the codes diagnosed it was a P138 (down oxygen sensor) and a P340 (camshaft pos sensor). We replaced the cam pos sensor. It turns out the reason the oxygen sensor code was thrown was that the wiring for the unit had been rubbing the drive shaft and it split one of the wires in two. Well after we fixed the wires it stopped for a few days. I had a mechanic drive it the last time it did it and naturally it did nothing so they couldnt help me. The day the mechanic drove it the bucking got worse and I could hear and feel a clicking near my gas pedal. I do have an exhaust leak that someone told me that could be throwing the oxygen sensor code also. But the actual sensor is not bad. Then last night I put a bottle of fuel injection cleaner in it and it started to shake violently and it was like it would rev up high then try to take off while my foot was on the brake. It did it till I cut it off and sat for a minute. I had my bf come and drive it and he said it did it once and when it did he could push the gas pedal all the way to the floor while it was only going 15 mph and doing the bucking and trying to go but just couldnt thing. He said he could feel it trying to go forward but it just wouldnt. The CEL light wont come on now but my bf said it seems like the fuel pump is going bad. I have had others tell me it could be the fuel filter but I thought that the filter was in the pump and you couldnt just replace the filter itself you have to do the whole pump. Is this true or is there reall ya filter somewhere? Is this what it sounds like a bad fuel pump? I am at a loss here. I dont know where to go next!
Sunday, March 29th, 2009 AT 12:44 PM