Error Codes and Unkown Squeak
Error Codes and Unkown Squeak I have been having some issues with my car throwing P0131 and P0171 codes. Occasionally, when I am driving the car at 40 or 50 mph it feels like its stuttering and is jerky (I expected for it to be misfiring but when I scanned the codes there were no misfire codes. I just replaced the O2 sensors a month or so ago and the fuel filter a couple of years ago. Car has long tube headers.
Whenever I take my foot off the gas pedal I hear a metallic squeak coming from the front of the car. The alternator and tensioner were replaced a little over a year ago and the belt was replaced with a gatorback belt several months ago. Any ideas to resolve any of these issues would be appreciated. The car also has been throwing a P1637 code basically since the alternator got replaced.
Whenever I take my foot off the gas pedal I hear a metallic squeak coming from the front of the car. The alternator and tensioner were replaced a little over a year ago and the belt was replaced with a gatorback belt several months ago. Any ideas to resolve any of these issues would be appreciated. The car also has been throwing a P1637 code basically since the alternator got replaced.
Have you checked for vacuum leaks? That's the first thing I do when I get a lean code such as 171. Looks like you have a LS6 intake there by your sig pic, I would check around the base of the intake manifold with either some kind of smoke or throttle body cleaner.
