re
Suspicion: Throttle body switches out of limits and need adjusting. "

is it making contact at idle or not ?
it either is, or it isn't.
which one ?

if you need to know how to adjust it,
or how to tweak it when normal adjusting won't work anymore, just ask.

There is just nothing like 'having everything in spec, and every feature
checked.'

if it's rough at idle..
you start by checking compression, and for intake leaks.

how are the injector spray patterns ?

Does the O2 sensor have a decent output ?
if no..why isn't there a new one on the engine .?
if yes, why isn't it connected  ?

lol..reminds me of a time I didn't really want to work on a guys Jaguar
..I asked him..
who's your regular jag mechanic ?
he said I was.
So who is your regular vanagon/waterboxer mechanic john ?

On 1/16/2014 7:22 PM, JRodgers wrote:
> Rough engine - the latest pita I'm having to deal with on a string of
> many!! I'm on a roll!!
>
> Ok - hot or cold - engine starts and idles well.
>
> Conditions - ISV disconnected due to Idle issues
> O2 Sensor Disconnected to put ECU in default mode.
>
> Cold engine: starts easily, idles easily, but upon attempted
> acceleration it bucks, kicks, snorts, hiccups, coughs - finally
> smoothing out at speed.
>
> Warm engine: starts easily, idles easily, but upon attempted
> acceleration it  bucks, kicks, snorts, hiccups, coughs - finally
> smoothing out at speed.  Only the bucking isn't quite so bad. Occurs
> mostly on the initial acceleration after idling successful.
>
> Suspicion: Throttle body switches out of limits and need adjusting.
>
> Anyone have any ideas about this?
>
> Thanks,
>
> John
>