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2011 R3 suddenly wont idle

Old 05-06-2019, 08:35 AM
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2011 R3 suddenly wont idle

the other day my kid called me while out with his R3 (6 speed) and said the car wont stay running....
It will start and run but you have to rev it up to keep it running, if you let foot off gas it dies.
about a month ago, I replaced the coils with the BHR set w/ plugs and wires.... thats the most recent work done.
I had it towed to a local shop and need to deal with it today... any thoughts on what could be going on or if anyone has seen a similar issue? Thx

Last edited by eichhoma; 05-06-2019 at 08:37 AM.
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Old 05-06-2019, 08:57 AM
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No check engine light?
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Old 05-06-2019, 09:00 AM
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Originally Posted by Daishiknyte View Post
No check engine light?
No sir, no CEL
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Old 05-06-2019, 10:26 AM
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Could be vacuum leak, bad MAF, bad front O2 sensor, low compression, bad throttle body, just to name a few things. It's impossible to narrow it down without more troubleshooting.
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Old 05-06-2019, 02:01 PM
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Vacuum leak sounds likely, since you did ignition coil work and that usually requires you to remove the accordion tube.
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Old 05-07-2019, 06:31 AM
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Definitely sounds like an air fuel mixture issue at idle. I would check for an air leak in the intake tubing after the MAF or a vacuum leak.
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Old 05-08-2019, 11:49 AM
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Well I had my own theory but kept it to myself. Generally a vacuum leak due to recent work performed shows up immediately rather than a month later, not that something else didn’t happen that resulted in a leak that big.

So just bumping for an update to find out what it may have been.
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Old 05-14-2019, 09:08 AM
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As a consideration, I've gotten some bad coils before from BHR. I replaced with AC Delco D585 and haven't had issues since. The BHR were probably under warranty, but I didn't want the hassle of more potentially cheap coils.
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