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1997 e36 328i m50 manifold

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m50 manifold
5K views 29 replies 8 participants last post by  djsteviec01 
#1 ·
I have done a lot of work recently on my 328i and replaced all sensors for genuine parts checked for vac leaks over and over and still am getting problems. The car pulls really well on its first run after 5-10 mins i lose all my low down torque. I have a properly converted m50 manifold from alpina527 and have noticed there is two possible places to plug the iat sensor plug in. Does anyone know whether i plug in to the one in the middle of the mani or on the far end or of anything else that could give me my problems. Thanks:thumbsup
 
#28 ·
Hi there,

Don't know if you ever got this sorted, my bestr guess would be to change both lambda sensors, and to make sure they are both in the correct sockets, as if they are swapped over it can cause issues.

Not always do OBD1 systems report Lambda sensor problems.

Mine was running poory but I only found the issue when it wen tfor its MOT & failed on emissions.
 
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