Poor idle - BMW Luxury Touring Community
 
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post #1 of 3 Old Oct 23rd, 2008, 10:06 am Thread Starter
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Join Date: Aug 2002
Location: Augusta, GA, USA
Posts: 199
Poor idle

I have reviewed the search function, but could not find any information pertaining to this particular question. I have a 2003 LT with 70xxx miles and developed an idle problem over the past few weeks. Last week when I started the bike, instead of going to the study 1000 + or – idle the bike dropped down to 500 + or – and was very rough. After pulling away the engine stopped at the next stop sign. I restarted it, but it went to the low idle and would not continue to idle unless I held the throttle slightly open. This went on for the next 10 miles and when I arrived home it would not idle.

I thought I had some water in the fuel or may have just had some bad fuel so I put dry gas in it and the next day added 2 gallons of fresh fuel and all was well. The bike would idle at 1000 + or – and no other issue.

Last night I started it up and it went back to the 500 +or – and stalled every time I stopped for a stop light. I have ruled out a vacuum line, since it does not surge at idle and it did go back to normal for a few days with out any changes to the system. Once I pull off the engine is strong as ever in all the gears. It just will not idle.

All ideas accepted.

Jim in GA

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post #2 of 3 Old Oct 23rd, 2008, 1:48 pm
 
Join Date: Sep 2005
Posts: 275
Re: Poor idle

"stalled every time I stopped for a stop light."

"Once I pull off the engine is strong as ever in all the gears. It just will not idle. "


Throttle Position Sensor? That was my problem with my 2005 LT..Diagnosed by my local BMW svc dept..no problems since..
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post #3 of 3 Old Oct 23rd, 2008, 2:00 pm
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Join Date: Sep 2002
Location: Augusta, GA, USA
Posts: 796
Re: Poor idle

Jim,

We can check it with the GS 911. If it shows a fault code, you will at least know what the problem is.

Lee Nowell
Black 01, LTC
BMWRA & MOA, AMA, IBA
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