My xterra has been chugging- it is an intermittent problem and occurs once a week, but is dangerous to drive on the freeway especially when it does chug. It acts like it is out of gas. The car has been checked for fuel line problems, a new fuel filter was put in and the fuel pump was said to be fine. We put in a new MAF sensor, new spark plugs, new distributor cap and rotor and oil change. I just got it back from yet another mechanics diagnosis and now they say it needs a new knock sensor. I had taken it to Nissan where they said a knock sensor would not cause chugging. Should I replace the knock sensor to the tune of $600 or does anyone have any other suggestions? The mechanic said my knock sensor is sending a signal to the computer causing it to malfunction. I have no idea about cars- does this make sense? I told him how Nissan dealers told me the knock sensor wouldn't be causing this issue. Nissan could not find the problem causing the chugging since there was no check engine light going on at the time.
Friday, May 25th, 2012 AT 7:22 PM