Check engine light 1990 BMW 525i

Tiny
FRANKYD422
  • MEMBER
  • 1990 BMW 525I
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 230,000 MILES
I have a 1990 BMW 525i and my check engine light goes on and then it goes off when I press the gas
Saturday, November 13th, 2010 AT 1:56 AM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
The "check engine" light is an indicator for a system that monitors many electronic functions in the system, also called the "malfunction indicator lamp" (MIL). It can come on for any of hundreds of different causes from any of the systems that the computer monitors. Some are very important and can lead to further component or engine damage and some are emissions related not as serious but still a problem and need to be repaired.

Your first step is to have the computer scanned to retrieve the trouble codes that were set when the check engine light came on. Those codes will give you specific information about what the computer saw and will get you pointed in the right direction to find your problem. With a 1996 or newer and some 95 cars and you have an AutoZone or Advanced auto parts in your area, they will read them for free. Once you have these code numbers, we can be a lot more specific about what your problem may be.
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Saturday, November 13th, 2010 AT 1:59 AM

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