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Discussion Starter · #1 ·
I've seen a very cheap faulty M6 for sale and considering buying to repair. its about 9k USD under the market price of a good M6.

this is what the seller says;


  • Upon start up the car sound amazing drives perfectly. But after its warmed up and you “kick down” (put your foot down). The car shows an engine management light, and goes into a limp mode. It sounds a bit lumpy/missy.
    I HAVE spoken to a BMW specialist. Who has told me it will be a single injector. No bad I thought but he is snowed under with work coming out his ears!
  • After speaking to him and then google, I have found out it’s a very common problem with these cars. Hence why the fix isn’t to bad. IF you turn the car off and back on ALL. The lights go out and the car runs spot on again!!!
  • Unfortunately by the time he fixes it I would of lost interest. So am selling. And moving on. For this reason it’s obviously spares or repairs.
I'm pretty good with a spanner, I do all my own maintenance, have ISTA, built a kit car etc. So I'm not worried about labour costs.
But I'm not familiar with this engine at all.
Can anyone give me a best/worst case scenario on the description above?

I'm waiting to hear back from the seller to see if he has had it scanned for codes.

Thanks!
 

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Could be several things. TBAs, Fuel pump, etc. Get the codes.
 

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Hello brother,

I had this issue before and it was both of the throttle actuators, and LH throttle position sensor for me.

I was able to replicate it with "ignition on/engine off" push the gas pedal all the way down and it should trigger limp mode with RPM's reduced.

If you have Rheingold, observe the values of your throttle position as you depress and release the pedal.

//q
 
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