peebles
12-17-04, 10:55 AM
I know there have been similar posts about this problem, but has anyone been given the TSB tech. service bulletin number related to it. Here's my situation. Decelarating to round a corner, (not coming to a full stop) and when i complete the turn and get back on the throttle (not flooring it) the trans lurches and hesitates for a couple of seconds till it finds a gear, and everthings OK. There have been posts here about a "firmware" upgrade to the trans. Just wondering if anyone has the TSB # or something i can give the service folks when i take it in...thanks.
Noreaster
12-17-04, 06:57 PM
I don't know if there's a TSB on this but I'd also be interested in learning any more information on this one. I'd also like to hear from the drivers who have had this done.
syrob@MSN.COM
12-17-04, 10:36 PM
Firmware update 2004 v8
The thump/clunk that occurred between 18-27 mph, when I would let off the throttle for 3-4 seconds and then reapply the throttle (lightly even) is gone with new firmware. The engine used to drop in RPM to a very low level 600-800 rpm at 18-27 MPH , The dealer reprogrammed the transmission computer and now the RPM stays higher at 900-1200 RPM at 18-27 mph. Applying the throttle does NOT produce a thump/clunk any more. Throttle response appears to still be good.
I do not know if this prevented the transmission from going into a “neutral like state” or modified the torque converter algorithm (if it has an electric disconnect), or was just an rpm level fix or gear selection change i.e. downshifting through the gears etc. Nevertheless, problem completely resolved.
I am experiencing the same problem. I took the car back to the dealer and they indicated that this is "normal" gear lash...Anytime they can't figure out what the problem is they claim it's "normal"....
Firmware update 2004 v8
The thump/clunk that occurred between 18-27 mph, when I would let off the throttle for 3-4 seconds and then reapply the throttle (lightly even) is gone with new firmware. The engine used to drop in RPM to a very low level 600-800 rpm at 18-27 MPH , The dealer reprogrammed the transmission computer and now the RPM stays higher at 900-1200 RPM at 18-27 mph. Applying the throttle does NOT produce a thump/clunk any more. Throttle response appears to still be good.
I do not know if this prevented the transmission from going into a “neutral like state” or modified the torque converter algorithm (if it has an electric disconnect), or was just an rpm level fix or gear selection change i.e. downshifting through the gears etc. Nevertheless, problem completely resolved.
Is there a TSB on the clunky shifts issue? If yes, please provide the TSB# because the dealer doesn't seem to know anything about it.