Hey, just purchased a '97 SE with 86k miles a few weeks ago. Since the actual day I got it the SES light came on, and has given me the codes for Knock sensor malfunction, as well as an EGR valve problem. Before I got it the used car place had to replace the valve-cover gaskets, which involved the removal of the upper intake, and subsequently they probably screwed around near both of the code causers. Do you think that had something to do with it?? So, even if I want to replace the knock sensor or just put a resistor on it, how do I get to it?
Next problem, the rear end sings kind of loudly from about 30 to 70mph. It only sings when you put your foot on the gas. I changed the diff fluid the day I got it and the fluid was a kind of metallic greyish color. I put new fluid with LSD additive in and it made no change in the noise. Do you all think I have to get the rear rebuilt or what? I'm looking forward to talking with everyone on the board as I am a new member. Thanks.