Comments below...
Valcich, Robert HSD wrote:
>
> 1. Fluctuating Idle speed
>
> When I de-clutch and let off the gas to coast, the engine decreases in RPM
> until it hits about 800 - 900 RPM (slightly higher than at stand-still, but
> normal). As a I continue coasting though, the idle rpm starts fluctuating
> up and down. It really gets bad as I pass through the 45 - 35 mph range,
> where the idle speed bounces between 400 - 900 RPM. This can also occur
> when I am doing close quarter maneuvers and am not going very fast, but am
> constantly de-clutching. I have never seen this behavior before in a
> standard. I took it to the dealer, but they can't find anything wrong with
> it - all of the components are working fine, so they didn't do anything.
> Does this sound normal to anyone else? The RPM fluctuations are driving me
> nuts, because it can so bad that I get to stalling the engine when the RPM
> is around 400 and I engage the clutch. The fluctuation do eventually stop
> when I come to a stand-still and return to a normal idle of about 700 rpm.
>
My 98 5.2 5spd idle fluctuates the same way. I noticed it the first time
I drove home from the dealer. Doesn't seem to have caused any problems
in the last year - the auto trans guys don't have this problem.
How about exhaust rumble/sputter/popping during engine braking
situations, have you noticed that one yet, or have they improved that
'feature' with the 99's. Another problem that the auto-trans folks don't
experience.
Here is a response that I got when I posted a similar idle fluctuation
question over a year ago...
am14@chrysler.com wrote:
>
> The computer has a mechanism that senses movement (distance sensor),
> and a throttle position sensor, that tells it where the throttle is.
> It is confused when coasting with the clutch in or the transmission in
> neutral. Can't handle it correctly. Will always be erratic until
> wheels stop turning(at least nearly dead stop, if not dead stop).
>
jeff
98 RC 5.2 5spd
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:13:04 EDT