our 2008 roadster sometimes does not downshift after slowing down or does not upshift after slowing down. computer just says unknown code!!

 

1. Fluid level. ( possible leaking transmission electrical connector )
2. Transmission "conductor plate" problem.
3. TCU ( not likely )

 

Thanks. Really frustrating that we can't access codes to tell us what the problem is. It has been on three different computers with no luck. Going to check fluid level now and see what that tells us.

 

Look for evidence of a leak at the right front corner of the transmission . . .

 

Thanks, will do. Have not noticed anything on the garage floor but checking fluid levels now.

 

A couple of points offered (to highlight/clarify posts from other members). Hard to check for leaks underneath if the lower aero panel is installed under the engine compartment. Two, checking the fluid level on the NAG-1 transmission is weird, there is no 'dipstick', the tab/cover 'clip' has to be 'broken' off (make sure you have that replacement 'clip' so when your done you can button it up correctly). Finally, the level is a relationship between its level and the actual temperature of the fluid (which is one of the main reasons there is no 'dipstick', as its not as easy as checking a 'level'. Lots of posts on this, a few mention how to make a home-made level tool. How your going to find the fluid temp eludes me still and I've owned mine for almost 6 years. Good luck!




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I have a 2004 chrysler crossfire automatic does anyone know were to buy a conductor plate online

 

amazon $130.88 :

rockauto : $154.79

autopartswarehouse : $147.95

partstrain.com : $111.66 : PartsTrain.com - Hard to Find Auto Parts and Truck Parts -

 

Hey George, aren't the plates the same for all 5 years? When I plugged in the 2008 crossfire in the link you posted, it came up that it doesn't fit (Don't need, just curious what it said/described)...


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As far as I know, it never changed.