rough idle at operating temp.
04-10-2010 | 02:31 PM
#11
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Joined: Sep 2009
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From: Mississauga, Ontario
My Ride: 2004 BMW 545I
M sport suspension
Active Steering
M sport interior
Navi
Low ride sports
update: took the car out today after 5 months of storage and after a long drive down the gardiner expressway. the noise is gone and hasnt returned since. so i am now pretty sure that it was bad gas in the tank. no more detonation ping althought i still have a bout half a tank of gas. but i will let it run bone dry so i could get rid of as much as possible. car runs great. thnx for the replies
04-12-2010 | 08:45 AM
#12
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Joined: Mar 2005
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From: Chicagoland (US)
My Ride: 2005 545i with Sport Pkg, Nav, HUD, Cold Weather Pkg, Rear Shades
04-12-2010 | 12:42 PM
#13
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Joined: Sep 2009
Posts: 173
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From: Mississauga, Ontario
My Ride: 2004 BMW 545I
M sport suspension
Active Steering
M sport interior
Navi
Low ride sports
05-08-2010 | 07:16 AM
#14
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Joined: Nov 2008
Posts: 543
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From: Buffalo NY
My Ride: 2004 545i 6 speed, Silver Gray A08, Gray leather
Mods: Hard-Wired Passport 9500ix LIVE , K&N Air + RPi Scoop, Mtech V2.1 AE, ACS pedals+Ebrake, flip up front plate, OEM 172's, Custom M Kit, M3 shift knob, Eisemann Race Exhaust
2005 X5 3.0 (the nightmare)
1998 528i SOLD @ 173K
I had the same problem with a rough idle at temp. got my spark plugs changed and now its all good! Going to run a bottle of dragon power next tank of gas and see how everything goes!
05-08-2010 | 07:20 AM
#15
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Joined: Jul 2008
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From: Chicago
Past 50,000 miles you should do the following and you'll notice a huge diff I guarantee!!!!!
1) Clean fuel injectors through the BMW service. Its like $140.
2) Clean your MAF Sensor $5.99 spray can at AutoZone. (do it yourself)
3) Replace spark plugs with NGK Iridiums. Should cost about $250 including labor.
4) Check / replace your air filter with K&N or BMC filters.
5) Use only Shell V-Power gasoline!
6) Change your oil with BMW 5W-30 Full Synthetic every 5,000 miles.
7) Flush your A/T transmission fluid service at 60,000 miles, then at 90,000, then at 120,000, (every 2 yrs) etc. Costs $450 at a BMW dealership.
8) Inspect your hoses, make sure they are firm after the car is cold. If not, replace!
9) Flush brake fluid every 2 yrs.
10) Make sure your coolant isn't low, check every oil change.
11) Inspect your suspension's lower control arms after about 65k miles. Chances are you might need to replace them around 80k.
12) Check your valve cover gaskets for leaks! $900-$1000 job to replace/repair.
The only thing that we are at mercy with in regards to massive repair are the computer systems in the vehicle. No amount of maintenance can prevent a hardware / software failure. The only thing that can give you hope is that you have a garage.
1) Clean fuel injectors through the BMW service. Its like $140.
2) Clean your MAF Sensor $5.99 spray can at AutoZone. (do it yourself)
3) Replace spark plugs with NGK Iridiums. Should cost about $250 including labor.
4) Check / replace your air filter with K&N or BMC filters.
5) Use only Shell V-Power gasoline!
6) Change your oil with BMW 5W-30 Full Synthetic every 5,000 miles.
7) Flush your A/T transmission fluid service at 60,000 miles, then at 90,000, then at 120,000, (every 2 yrs) etc. Costs $450 at a BMW dealership.
8) Inspect your hoses, make sure they are firm after the car is cold. If not, replace!
9) Flush brake fluid every 2 yrs.
10) Make sure your coolant isn't low, check every oil change.
11) Inspect your suspension's lower control arms after about 65k miles. Chances are you might need to replace them around 80k.
12) Check your valve cover gaskets for leaks! $900-$1000 job to replace/repair.
The only thing that we are at mercy with in regards to massive repair are the computer systems in the vehicle. No amount of maintenance can prevent a hardware / software failure. The only thing that can give you hope is that you have a garage.
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