325es e30 Stuttering on partial throttle Acceleration

[Josh Ormsby <josh@xxxxxxxxxxxxxxxxxxxx>]

I have been having something like this happen, especially when it's wet out.

My theory is that the potentiometer inside the throttle body gets a bit 
worn out or dirty at the lower rpms. I bought a used one and carefully 
pried off the black plastic cap, to inspect the innards. If any moisture 
got inside the corrosion would really cause problems with input to the 
Motronic brain.

I haven't yet swapped in the newer part so I can't say if my theory has any 
merit.

Of course, fixing any vacuum leaks and following normal tune-up procedures 
is important before you go chasing down wild thoeries.

Josh

>-----------------------------
>
>Date: Thu, 19 Jul 2001 18:34:25 -0500
>From: Purvis Brad Civ UAVB/DOI <brad.purvis@domain.elided>
>Subject: 325es e30 Stuttering on partial throttle Acceleration
>
>All:
>I have a 325es and a friend that has the same car, 86 model, and both have
>the same problem. Under full throttle the cars accelerate fine, partial
>throttle they stutter a little bit and I have not found out why. Replaced a
>few vacuum hoses and think it maybe a vacuum leak. I will see about using
>the propane tank trick with the engine running and see if the rpm's
>increase. Failing that I would like a suggestion as to what to look for.
>Thanks
>Brad Purvis
>
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