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Registered
Join Date: Aug 2005
Location: New Hampshire
Posts: 13
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oxygen sensor fuse blows
On my 325e 1986, the oxygen sensor fuse (F9- 15amp) keeps blowing causing the engine to rev very high. The circuit diagram I have does not tell me which relay controls the sensor. Does anybody know the relay number ? I have tried randomly changing relays in the fuse box to no avail.
Also, where is the oxygen sensor located ? I recently had some work done with my exhaust at the manifold. Could there be a connection to the fuse blowing ? Thanks in advance Brendan
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bdaly |
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11-07-2005, 08:54 AM
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Join Date: Nov 2003
Posts: 57
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oxygen sensor relay is located under the little black box on the dirvers side under the hood mounted on the fender. the O2 sensor its mounted on the exhaust downpipe. i duno where it is exactly on an eta but it shouldnt be too different than an i car. good luck. sounds like its shorting somewhere. check wires for chaffing.
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11-07-2005, 02:38 PM
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Join Date: Aug 2005
Location: New Hampshire
Posts: 13
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I found the relay. Thanks. When I remove the relay the fuse does not blow and the engine revs at normal RPM. The relay is good so I will follow the wiring down to the exhaust and hopefully find the short. If the sensor was bad does it typically exhibit a "short"
Thanks Brendan
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bdaly |
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11-08-2005, 07:41 AM
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Posts: 57
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it can if something is bad internally.
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11-08-2005, 05:15 PM
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