I have a 1999 Crown Vic. I have noticed a slight vibration when it shifts into high gear. It does not do it all the time, but it has started to happen more frequently. I have been told it is the torque converter. What is your opinion and is there anything I can do short of replacing it?
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not shifting --- slow shifting --- missing gear changes --- no OD or reverse or slow shifting to them. Have a pressure test done on the transmission to check for internal damage and have the bands and clutch packs adjusted . Run fault codes if this is available on your vehicle.
Change the filter and fluid. This car if the transmission is original should have a torque converter drain. Drain the torque converter also,it gets almost all the fluid out of the transmission. Doing this the car will require almost 12 quarts of fluid. Worth a shot. I change mine at 25000 mile intervals.
MOST INTERCEPTER CARS, MEAN THEY HAVE AN ADDED GEAR IN THE TRANSMISSION! WHAT YOU'LL BE DOING IS GOING TO A TRANSMISSION WITHOUT THAT EXTRA GEAR! TO ANSWER YOUR QUESTION: YES YOU CAN REPLACE IT WITH A REGULAR TRANSMISSION! YOU JUST WON'T BE ABLE TO CHASE BURGLARS! HAHA
Unless you are low on fluid, I suspect you are in need of a rebuild. I have had similar problems before. Any shop will tell you to try a fluid and filter change. It has never brought one of mine back. I would suggest adding fluid to the top of the 'add fluid' area of the dipstick and no more. It can foam if it is to full, causing similar problems as being to low. I would add that if you have to replace the transmission - you need to consider that the car may not be worth the cost.
Do you have a check engine light on? The line pressure is too high in the transmission. This is either from a bad epc solenoid in the transmission or the computer commanding the pressure high from a bad MAF. If you have a bad MAF you should have other MAF (Mass Airflow Sensor) codes in the computer.
I would get the transmission drained, flushed and have them install a new transmission filter. It generally costs about 150 to get this done or you can do like i did and burn the transmission up and it can cost 1500 just for the transmission