2009 S starts then dies
Created by: MiniReg
Orig. Posting Date | User Name | Edit Date |
Dec 18, 2018 04:09PM | h_lankford | |
Dec 18, 2018 10:43AM | MiniReg | |
Dec 18, 2018 10:39AM | MiniReg | |
Dec 18, 2018 06:14AM | kenatminimania | |
Dec 18, 2018 05:49AM | h_lankford | |
Dec 17, 2018 07:08PM | MiniReg |
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Last post: Mar 29, 2024 Member since:Aug 29, 2001
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Glad it worked
in my experience, disconnecting the MAF and running on defaults is the first thing to do even before looking at codes. All sorts of codes can appear from a bad MAF without ever alerting you “bad MAF” . MAFs can go bad in an instant like other electrical problems. Some people try to clean a bad MAF. I cannot trust that. A new one is a small price to pay.
in my experience, disconnecting the MAF and running on defaults is the first thing to do even before looking at codes. All sorts of codes can appear from a bad MAF without ever alerting you “bad MAF” . MAFs can go bad in an instant like other electrical problems. Some people try to clean a bad MAF. I cannot trust that. A new one is a small price to pay.
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Last post: Dec 18, 2018 Member since:Dec 17, 2018
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Thank you for input. We only use a gas station to fill Mini because of the volume of gas they sell and using higher octane pump gas. It was a sudden problem. I change air filter alone with plugs, and coil packs. In the previous post the MAF idea seems to work. Running great now.
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Last post: Dec 18, 2018 Member since:Dec 17, 2018
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Update:
Unplugged MAF and it runs perfect. Thank you!
Unplugged MAF and it runs perfect. Thank you!
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Quote:
Originally Posted by MiniReg
2009 S will 125,000 miles, Starts but dies after. I can throttle car during start and it runs rough until rev up then runs. Codes are misfire. Have replaced Spark plugs, Coil packs... cleaned throttle body. Any ideas?
It is difficult to diagnose with complete certainty and there are many items that can cause similar issues, but based on our experience, history of the 2007-2010 models, and the descriptions of the symptoms you provided, it 'sounds a lot like a defective High Pressure Fuel pump.
Before you order the HPFP, I would recommend you look for any vacuum leaks.
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Last post: Mar 29, 2024 Member since:Aug 29, 2001
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unplug your MAF.
Should run on default settings.
If runs better, then MAF is bad.
Common problem, easy fix.
Should run on default settings.
If runs better, then MAF is bad.
Common problem, easy fix.
Total posts: 3
Last post: Dec 18, 2018 Member since:Dec 17, 2018
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