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Registered
Join Date: Dec 2003
Posts: 22
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idle problem
Hello, my 85 325E is blowing fuse #9 frequently, I have run diagnostics on all related sensors and wiring, installed spare ECU , cleaned out idle valve on engine, and adjusted the TPS. all check fine.
the idle is running about 2500 rpm until I replace the fuse, then back to normal. standing alone at idle it will run for about 4 minutes until the fuse blows, or about 30 sec. if driving. Please help. Mike |
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12-04-2003, 01:09 PM
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Join Date: Dec 2003
Posts: 22
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ok, replaced the o2 HEGO relay, seems to have worked. Checked wiring dia. from dealer as Bently doesnt have fuel sys diag.
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85 325E, 89 944 S2, 91 mustang, 71 Monte Carlo |
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12-05-2003, 12:05 PM
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In the shop at Pelican
Join Date: Aug 2002
Location: Los Angeles, CA
Posts: 10,459
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I was going to post that you should try replacing the relay, but looks like you figured it out before I could post.
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12-05-2003, 02:42 PM
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Join Date: Dec 2003
Posts: 22
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Yes, when looking at the diagram from bmw of Ann Arbor, i realized that on ly adirect short / load over 15a could blow the fuse, so checked all direct loads on that circuit. ( elect. 101 ) i believe.
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85 325E, 89 944 S2, 91 mustang, 71 Monte Carlo |
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12-06-2003, 07:28 AM
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Join Date: Dec 2003
Posts: 22
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Surging problem now, 2days fine, weather is about 30-40 deg F. I thing something may be overloading a relay?? is this possible?
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85 325E, 89 944 S2, 91 mustang, 71 Monte Carlo |
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12-08-2003, 06:19 PM
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Join Date: Dec 2003
Posts: 22
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This sounds weird, but today I unplugged the O2 sensor, no more problem......idle is fine except a little rough from rich condition. possibly a bad replacement sensor? it was bosch 3 wire universal type.
???
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85 325E, 89 944 S2, 91 mustang, 71 Monte Carlo |
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12-11-2003, 06:50 PM
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In the shop at Pelican
Join Date: Aug 2002
Location: Los Angeles, CA
Posts: 10,459
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I have heard of rare cases where a bad o2 sensor can cause a bad idle...
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12-12-2003, 07:31 AM
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