R53 limp mode
#1
R53 limp mode
A few weeks ago my 05 r53 went into limp mode. Check engine light, traction control and emissions light all went on. Revving the car past 2500 rpm causes the car into limp mode. Replaced the map sensor cleaned the throttle body to see if that would work. No luck with that. Anyone know more about this issue before I take it into my local shop? Thanks in advance!
#2
Had a similar problem - under full throttle acceleration, the car would go into limp mode around 5000 - 5500 RPMs. Turning the car off would usually get me out of limp mode, and going easy on the throttle would keep me out of it. Turned out to be a failing belt tensioner letting the belt slip under high load. Should be easy to check if you have the belt removal tool.
#4
Had a similar problem - under full throttle acceleration, the car would go into limp mode around 5000 - 5500 RPMs. Turning the car off would usually get me out of limp mode, and going easy on the throttle would keep me out of it. Turned out to be a failing belt tensioner letting the belt slip under high load. Should be easy to check if you have the belt removal tool.
#5
I haven’t had the opportunity to pull codes. My code reader doesn’t work for minis. I’ve been on the look out for one.
#7
Best price I found on the tool was $35 (incl. shipping) on amazon. It's still there ("EWK serpentine belt tool kit supercharged for BMW mini cooper/S...." etc). I leave it in the trunk with a spare belt.
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#8
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iTrader: (10)
If you smell burning rubber check the crank pulley. They are so prone to failure they are the most common failure to cause limp mode. If so go with a new ATI damper and you won't have to worry about it happening again.
https://www.waymotorworks.com/super-...ulley-r53.html
https://www.waymotorworks.com/super-...ulley-r53.html
#9
I had an almost identical problem on my 2007 R52 recently. Traction Control, check engine, emissions indicators plus limp mode. Occasionally all the dials would go off the chart as well. Took it to a specialist auto-electrician. Took a couple of days to trace but turned out to be the tachometer triggering a whole bunch of codes and messing with the body controller - sending the trans into limp mode. Replaced the tachometer and everything was back to normal.
#12
Those are generic, but I would lean toward the throttle body being bad
https://www.waymotorworks.com/thrott...-cooper-s.html
https://www.waymotorworks.com/thrott...-cooper-s.html
#13
Vendor
iTrader: (10)
when I remove it to clean it I tested it out. The rubber seal was also replaced the same time. I would let the car reach operating temperature then rev the car to 2500-3500 rpm. With the throttle body visible the doors worked fine. Reved it a few more times then the doors would open about quarter way. Is there a way to diagnose if the throttle body is bad?
#14
#15
#20
So after few months with no update I’m here with sad news. The car was fixed after a week or two after dropping it off. The issue like many forum users said was indeed the crank pulley. So I opted to install a 17% pulley along with corresponding parts. Unfortunately after two days of the car being returned a relative of Bambi decided to play hit and run. The vehicle was totaled out by insurance but since have bought the car back! Parts have been orders and are weeks away. Unfortunately here in Michigan weather isn’t great so looks like it’ll have to wait. Sorry for a long overdue update. Thanks for everyone who responded with some feed back.
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