On Thu, 06 Nov 2008 02:47:58 +0000, Tegger wrote:

> "techjohnny@gmail.com" <techjohnny@gmail.com> wrote in
> news:becf7425-61e7- 4e73-9ff7-a014eb920d5c@a3g2000prm.googlegroups.com:
>
>> If an EGR valve is bad or improperly installed would this affect the
>> transmission from shifting gears or rough shifting gears?
>>
>>
>
>
> No.
>
> A stuck-open EGR valve usually causes a stumble at part-throttle,

are you sure? in my experience, if the egr or ports are clogged, the
throttle flat spots. that's flow restriction, not being stuck open.

personally, i don't bother with egr on my vintage vehicles since they're
no longer required. replacement of the ecu [$40 from the local junkyard]
with a non-egr ecu renders it inoperative and the cars drive like
dreams. /and/ pass smog!


> and
> possibly rough idle. A stuck-closed valve causes high emissions.
>
> In OBD-II cars a sticking or non-functional EGR valve usually sets a
> P04xx DTC with illuminated MIL ("Check Engine light").
>
> Certain years and models of Hondas had bad problems with their automatic
> transmissions. For those vehicles there is a warranty extension.
>
> The wrong fluid will cause hard or harsh shifting.