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RedlightG20

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Posts posted by RedlightG20

  1. Mass air flow sensor is a good place to start. I'm not too positive about BMW, but you should be able to unplug the MAF sensor connector to verify. It will cause a check engine light and may run rough for a second, but when it realizes that the MAF sensor is not within range, it will go to a base (predetermined) A/F map.

    Other fairly common issues that could cause that symptom are ignition coils and cam sensors. There isn't a very easy way to check those without diagnostic equipment.

    Good luck. Diagnosing BMW's can be tricky sometimes.

    For the brakes, it sounds like the rotors are rusty. Does this happen after it's been sitting for extended periods, especially on rainy or humid days? If so, that's what it is. The noise will go away after the first few braking applications as the pads clear the rust off of the brake rotors.

    If it still happens after the first few braking applications (assuming the pads are in good shape), then I'd say a low quality brake pad. No safety issues, just noise.

    Either way (assuming the pads are in good shape), it sounds like the last time the brakes were replaced they used lower quality parts. Low quality parts are less expensive but normally result in unwanted brake noise.

    As for your belts. They either need to be tightened or replaced. You can bank on that one.

    Thanks for the advice, I'll check back when I find out more!

  2. Alright I have two issues.

    First is my mom's 2004 BMW 525. When accelerating, the RPMs move up and down very inconsistently. Overall, the car seems to accelerate fine, but the car is slightly jerky due to the quick and small changes in RPMs. It's acting like you're quickly pushing and letting off of the gas pedal, but in fact you're holding it steady. I've only driven it around town on very short trips so I'm not sure if it gets better as the car warms up. Perhaps a faulty or dirty mass air flow sensor?

    The next problem I'm having is with my 2003 Nissan Pathfinder. The brakes make a high pitched noise when slowing down at times, but I had it looked at shortly after I purchased the vehicle (I bought it this past November) and they said that it was temporary and would subside after driving it around a bit. Perhaps I need to get them cleaned? Sort of the same issue with the serpentine belts--they make a squeaking noise, especially on cold and/or rainy days. Is there some kind of spray I can use to fix this temporarily?

  3. Don't even gimmie Biology.....ack :doh:

    I've been studying ALL friggin day for a lab practical....

    I basically gotta know everybone in the body and what it looks like stand-alone.....

    to complicate things more, I need to be able to identify every major tissue in the body when placed under a microscope and WHERE it come from.... :mad:

    This is awful....

    While it is'nt HARD.....it is a TON on NEW vocab....

    Here's an example....

    Label what it is, name 3 parts it consists of and where it was taken from....

    *edit: without right-clicking :laugh: :laugh:

    pseudostratified%20tissue.jpg

    Looks like the lining of the respiratory tract. Its been 2 or 3 years since I had anatomy haha... pseudostratified epithelium maybe?? :silly:

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