What are error codes E98 and F47 for 1992 Cadillac Deville

Question edited for clarity, spelling of the maker, toss in some CAPS and make sentences.
Question moved to model category.

Both are Transmission errors

E-39 Error

https://caddyinfo.ipbhost.com/topic/10886-92-deville-error-code-e39/

and E-98

Diagnostic Code -- E98 Need Help

Cadillac Owners Forum https://www.cadillacforums.com > threads > diagnostic...
Nov 9, 2005 - E98 - High RPM P/N to D/R in ISC Range check your tranny. its sometimes called a VCC overstress error. dont change gears until car is totally ...

Great, now I have MORE trouble codes!! E91 and E98
Aug 7, 2006
Error codes E22, E32 E52 E98 - Cadillac Owners Forum
May 5, 2004
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EGR Valve issue (Exhaust Gas Recirculation)

https://www.google.com/search?q=1992+Cadillac+DeVille+Sedan.+error+code+E48

..

Plug a diagnostic computer in to the EODB port and the device will display error codes on screen, you can then cross reference them to find out the areas to check.

Probably two different issues.

The code is saying the computer sees the engine RPM is too high when shifting between park neutral and drive.
The rough idle would be something else.

e52 is ecm memory reset
e91 park neutral safety switch
e98 transaxle shift fault

Sounds like the engine is idling to high. There is a procedure that you must go through to set it. Reply and I will let you know how to set it.

timing should help the idle issue. and the vss probly needs to be replaced.check the egr diaphram its gold and is underneeth the air breather. push up on the bottom of diamphram it should move without alot of efort. if not replace it

the switch on top of the transmission where the shift cable is . it probly is not anny good. check all wiring . make sure thair is no dirt inside the connector

trans convertor solenoid bad inside the transmission

Code 22 OPEN TPS SENSOR CIRCUIT , E 70 INTERMITTANT TPS SIGNAL, E98 DRIVER CAUSED PARK / N TO DRIVE motion by the driver, attempting a shift position, not agreeable with computer. Go figure ! Hope this helps