SOURCE: 1999 buick lasabre hesitation while driving.
there are really only 2 things that cause this problem most of the time i have seen it, 1st a defective Mass Airflow Sensor, the second is low fuel pressure from a failing pump or obstructed fuel filter do u have a check/service engine soon light on at any time? have u had the system tested for trouble code's? Go to any Kragen or Autozone and ask for a OBD 2 trouble code test, it is free, record any code's that show and post them back here on this same thread.
SOURCE: must replace serpentine belt on 99 Buick Lasabre
This is a 99 lesabre? You don't have to remove the mount. Look in through the wheel well and remove the nut on the mount that is between the crank pulley and the a/c compressor. After you remove the nut, remove the stud with an inverted torx bit. When you remove the stud, the spacer between the mount and the block will come out and then you can change the belt.
The cap might need a pressure check. Just because it stays on and tight doesn't mean it is functioning properly. It must meet EPA standards to function properly. Your cap is special part of your emission system and if it is not working properly you will need to replace it and have the light reset. If you owed a code reader it would tell you the same. Auto zone does do free code reading. The check engine light usually is not a big problem,but... I will leave it at that.
SOURCE: the check engine light is coming on my 99 buick la sabre
Take it to a local auto parts store (Autozone, Murray's, Checkers, Napa) have them hook up a scan tool to get the diagnostic codes, write them down and post them here so we can further assist you. There are many reasons that can cause the check engine light to come on.
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