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2000 Boxster Base Tiptronic

bluefox
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bluefox Member

bluefox

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The Tiptronic works perfect on jack stands.  No forward or reverse movement on the ground except creeps at high RPMs.  No codes, leaks.  ATF and filter changed multiple times. Pan was clean at each change.  Solenoids all test with correct OHMs.   After several fluid changes the car would drive normal and correctly for about 10 minutes and then back to no movement.

Second question, if the Tiptronic is toast will a same year S with the S TCM be a replacement?  Essentially a A86.05 replaced by an A86.20?  Thanks

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bluefox Member

bluefox

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No flashing gear indicators.  Used Foxwell , Snapon with Porsche module and Durametic scanners with no codes on any scanner.  Input and output scanners  have correct ohms.  Scanners show tiptronic is in the same gear as shift selector.  On jack stands the tiptronic shifts correctly & automatically 1st thru 5th.  I am stumped.  TCM temp corresponds to handheld laser sensor.

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crwarren11 Member

crwarren11

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I would expect a mechanical problem in the transmission to issue a fault code.  Bad solenoids or valve body, worn clutches, low oil, will all trip a fault code which will be seen in Durametric for sure. 
 

Wondering if it is the control module in the trunk? I have been told before that these can go bad and replacements are available through eBay for pretty cheap. Might be worth exploring? Someone here may also be able to offer you one to swap in temporarily to see if it resolves the problem. 

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bluefox Member

bluefox

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I switched the TCM and no change in the no go symptoms.   Full disclosure, this car is new to me.  It was non running, garaged for 10 years. Everything is working except the Tiptronic, even the  A/C.  The only odd thing is the about the Tiptronic is the selonoids and sensors are all stainless except the master pressure selonoid is green. All of the valve body photos I can find shows 3 green, 3 stainless and 1 yellow.

Could the valve body be the wrong one?  The serial number is 324 366 0 101112 10 7.  Is this the correct valve body?

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