Re: Trans died then can go again after cold start - Saab 9000 Bulletin Board - Saabnet.com
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A common problem on these transmissions is failure of the governor seals but the symptoms are different from what you describe. (When those seals fail automatic shifting becomes erratic but the trans works OK when shifted manually.)
Are you sure the whining is coming from the transmission and not something like the power steering pump? If it is the trans, might be torque converter or pump.
Perhaps parts in the valve body are hanging up intermittently? Might be worth contacting Eriksson Industries to see what they think might be causing the problem. Although Eriksson no longer services the ZF 4HP18 or sell parts for it that is a relatively recent development. They most likely still have people on staff familiar it who may be willing to give you some advice: Click Here
Townsend has a troubleshooting flowchart which may (or may not) be of some help: Click Here
->Posting last edited on Thu, 6 Dec 2018 05:22:35.
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