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Re: Surge Problems w/1991 BMW 525i multi valve (archive)

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Posted by DLS on January 27, 2000 at 10:35:16:

In Reply to: Surge Problems w/1991 BMW 525i multi valve posted by Mark on January 27, 2000 at 02:03:06:

: I hope you can help me out here, I recently purchased a 1991 BMW 525i with 107,000 miles. I noticed going up steep hills
: that the car surges. You can't see it on the tach but you can see it on the MPG gauge as it swings upwards every couple of
: seconds and you can feel it in the ride. It has started to get worse and it now surges on smaller hills.

: I replaced the plugs and the fuel filter and put in a can of injestor cleaner. I sould suspect the ignition coil but the car has 6 of
: them. Would appreciate any tips.
: Thanks
: Mark email: [email protected] or call 949.369.5161

Mark,
I had the same problem with my '92 525i, I fixed it by replacing the O2 sensor


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