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Lockup solenoid


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Anonymous Poster
snoe2006@yahoo.com

Mar 6, 2008, 7:07 AM

Post #1 of 7 (1644 views)
post icon Lockup solenoid Sign In

Can someone tell me where is the lockup solenoid is on a 97 GrandMarquis? I am mainly familiar with engine parts , but not tranmission parts.Someone told me that it was causing my torque converter shudder and I would like to change it . Thanks for your help!


way2old
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way2old profile image

Mar 6, 2008, 5:14 PM

Post #2 of 7 (1634 views)
Re: Lockup solenoid Sign In

More than likely it is not the lock-up solenoid. It is more than likely dirty fluid in the torque converter. You can drain all the fluid out of the transmission, torque converter and then try to remove all the old fluid from the transmission cooler. It is time consuming and will cost you about as much as having the transmission professionally flushed. Or you can go the easy route and install a bottle of trans shudder stop additive, It will buy you more time. Eventually the torque converter will need to be replaced. If you want to try the draining yourself, let us know and we can post procedure. Good luck.



Being way2old is why I need help from younger minds


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Anonymous Poster
snoe2006@yahoo.com

Mar 7, 2008, 5:05 AM

Post #3 of 7 (1631 views)
post icon Re: Lockup solenoid Sign In

Yes I would like to try this procedure, any help you give me will be much appreciated. Thanks


way2old
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way2old profile image

Mar 7, 2008, 6:11 AM

Post #4 of 7 (1629 views)
Re: Lockup solenoid Sign In

Here we go----
1. Jack up and safely support vehicle.
2. Remove the transmission pan and filter. (this can be messy)
3. Remove little plastic plug on bottom of bell housing.(If it is still there after the years.)
4. Turn the engine over by havd until you see a small nut on the torque converter through the little hole.
5. Remove said little bolt.
6. Take a break, it takes a long time for 8 quarts of fluid to drain out of that little hole.
7. When fluid stops draining, replace little bolt.
8. Replace transmission filter and pan.
9. Remove BOTH transmission cooler lines from the passenger side of the transmission.
10. Use some transmission flush in an aerosol can to blow the old fluid from the cooler and lines.
11. When cleaner comes out (instead of transmission fluid) re-install the transmission cooler lines.
12. Make sure everything is assembled back and all bolts are tight.
13. Pour about 6 quarts of transmission fluid in the transmission.
14. Start car and run it through the gears without allowing the wheels to turn.
15. Shut vehicle off.
16. Add 4 more quarts of transmission fluid.
17. Start vehicle and run through the gears again without allowing wheels to turn.
18. Lower vehicle to the ground.
19. Start vehicle and allow it to come to operating temperature.
20. Check fluid and top off as needed to fill up to top of full mark.
21. Test drive vehicle
22. Re-check transmission fluid and look under vehicle for leaks.

Parts list.

1. 12 quarts of transmission fluid. (Mercon)
2. 1 transmission filter.
3. 2 cans of transmission flush.
4. Various clamps and hoses to connect cleaner to the transmission cooler lines.
5. Optional can of transmission shudder guard.

After thought---- Ifyou have the parts house look up the lock up solenoid and show you one, you can readily find it. It is a small solenoid hooked to the valve body.


Good luck and hope you get it finished.



Being way2old is why I need help from younger minds

(This post was edited by way2old on Mar 7, 2008, 6:16 AM)


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Anonymous Poster
snoe2006@yahoo.com

Mar 7, 2008, 6:24 AM

Post #5 of 7 (1626 views)
Re: Lockup solenoid Sign In

Thanks so much for the information. One last question, what is the level of difficulty in replacing the torque converter? I am unsure about this job , but was wondering about tools and equipment? Thanks


way2old
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way2old profile image

Mar 7, 2008, 5:12 PM

Post #6 of 7 (1619 views)
Re: Lockup solenoid Sign In

To replace the torque converter requires removing the transmission. It will be very high on the difficulty scale doing it in your driveway without the proper jacks and etc. The tools that are needed is basicly a good mechanic tool set with various wrenches, sockets, extensions and ratchets. You would also need a transmission jack to make it a little easier. Good luck and let us know how you make out.



Being way2old is why I need help from younger minds


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Anonymous Poster
snoe2006@yahoo.com

Mar 7, 2008, 5:26 PM

Post #7 of 7 (1618 views)
post icon Re: Lockup solenoid Sign In

You're right I won't be able to do this myself, but I will try other things. Thanks for the help, I appreciate it, and I will let you know.






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