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Question on BMW 3-Series E30 Idle speed troubleshooting
Hi, my '89 525i E34 m20b25 have a bouncing idle after a engine rebulid, when is started everything seems to be ok, idles at 800 but 1 or 2 minutes later the idle starts to bounce, at first the idle bounce beetween 800 and 1000 gradually getting worse untill it reaches 1800 rpm,really anoying while driving in town, i replaced nearly all hoses, icv is new ,tps seems to be ok so the afm.
__________________ This post was auto-generated based upon a question asked on our tech article page here: BMW E30 3-Series Idle Speed Troubleshooting (1983-1991) | Pelican Parts DIY Maintenance Article |
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11-22-2016, 09:22 AM
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Moderator
Join Date: Jul 2012
Location: New England
Posts: 3,189
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if you remove the ICV and control air flow to the engine to reach 750 rpm, is idle smooth?
- Nick |
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11-22-2016, 09:22 AM
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