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Raymond Holmes Posted on Dec 13, 2013

My car has been having a rough idle with backfire and flickering lights.

The car has progressively gotten worse. It has been rough idling when stopped at a light or anywhere else, lights will flicker during this time and still do it, although not as bad, while driving. Also my acceleration seems to be limited in a sense. It has been difficult to get my car up to speed. This last problem occurred one day when I pulled out of a drive and accelerated quickly to beat traffic and something happened and I was all of a sudden limited on acceleration and felt like my car was not going to make it home. Any one have a similar issue or know what it might be? Alternator and battery have been checked with multimeter, alternator is pushing out 14-15 volts.

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bchhim

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  • Posted on Dec 13, 2013
bchhim
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Joined: May 27, 2009
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Raymond, is this a stick shift or automatic? Here are some general solutions to your problem, it might not be the one, but its a start. 1.Rough idle could be caused by dirty fuel injectors, dirty air filters, fuel pump not delivering enough fuel to the engine. The air filter is an easy check.

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3 Related Answers

Anonymous

  • 1 Answer
  • Posted on May 02, 2009

SOURCE: loss of all power (total loss of accelerator ]) lots of management lights during driving

The purge valve is right underneath the intake manifold, it the valve that has a hard plastic hose attached to it that runs back towards the fuel tank. But I don't think that is it. I had the same problem and I changed the MAP thermostat, and the leak detection pump. Here are the codes from the OBD27cc DMTL leakage279b Thermostat map cooling
You need part number 03 Leak diagnostic pump 1 16137193479

04 Thermostat housing with thermostat 1 11537509227 $66.96

i bought from
http://www.bimmerspecialist.com/canada/parts/index/bmw?gclid=CIL44sSCnZoCFRYiagodLwLJ-Ahttp://www.unofficialbmw.com/images/04b%20MS45%20DME%20Part%203.pdf

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Anonymous

  • 190 Answers
  • Posted on Jul 07, 2009

SOURCE: 1999 bmw 528i replaced battery and alternator

Replace your battery when its being tested there not testing it under a heavy enough load. A battery could have a dead cell in it and still show good on the charger. I've had that problem a few times.

Jonah Oneal

  • 14092 Answers
  • Posted on May 10, 2010

SOURCE: Car is shaking at idle and then 60 mph

BAD SPARK PLUGS AND WIRES DIRTY FUEL INJECTORS AND STOPPED UP FUEL FILTER OR WEAK FUEL PUMP WILL CAUSE ENGINE TO SURGE.

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