Re: Diagnosis on E28 missing

[timothylewis@xxxxxxxx]

Howard,
Have you checked for a loose or degraded ground cable between the engine
and the body?   Also, if this car is old enough to have an EGR valve, its
intermittent failure could cause random vaccuum leaks.

Tim


Howard K Mitchell wrote:

> Ok, I need some help with a diagnosis.  Let me describe the problem, and
> tell you what I've tried, and you guys can tell me where to REALLY find
> the culprit!  Sort of like a game, except we'll all win.  No more wasted
> money for me, you get the thrill of victory!
>
> 1) The First miss: imagine the ignition or current cutting out for 1/10
> of a second while, gives the car a real jolt; a cut, then back on, sort
> of like a hiccup.  It happens randomly about once every helf hour.  If
> it does it while you're accelerating in first or second, it can chirp
> the tires it's so bad!  Makes you cuss.
>
> 2) The second miss: imagine the M30 engine having an epileptic fit.  It
> shudders and spits and sputters like a mother, from 10 seconds to 20
> minutes.  It's happened 3 times now.  Thank goodness I was off the
> highway for the 20-minute seizure, cause the car is completely
> undriveable.  You just push the clutch in, and hope it will go away
> soon.  You can keep it running with a periodic tap on the gas, but
> that's all, no driving.
>
> Winner gets my eternal gratitude, and any markup on the parts you'd like
> to send me to fix it.
>
> BTW, I've tried a new coil, coil wire, checked for vacuum leaks, checked
> the TDC sensor and other sensors for loose connections, and I'm going to
> bolt up a remanufactured DME today to see if that may be the culprit.
>
> Ken Mitchell
> Durham, NC

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