Question about 1992 Buick Skylark

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1986 Buick Century 2.5 Torque Converter lock-up

I know the solenoid is bad and I know how to unplug it but what I'm looking for is a definitive answer on whether or not this will hurt the tranny in the long term. Some say it will not and others say it will operate too hot and do damage. Is a 3-speed with the solenoid unhooked not just like an older model without lock-up or is it built lighter? I'm not after more opinions, I would like a definitive answer from a knowledgeable person.

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  • Buick Master
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You need to relace the solenoid or you will burn out the transmission

Posted on Apr 13, 2009

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Posted on Jan 02, 2017

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1 Answer

Need to know where the solo oid tourque is on the tranny of 92 buick century


All solenoids are located inside the transmission attached to the valve body. I assume you are locking for the torque converter solenoid.

Oct 15, 2016 | Buick Cars & Trucks

1 Answer

How can i release a torque lock on a 2007 Impala?


What is a torque lock? Do you mean a Locked Torque converter in the transmission?
Reading the stored computer trouble codes will tell you if the overdrive is failing. Go to AutoZOne or some such place and have the diagnostic scan to see what codes are set.
You CAN unplug the lock-up torque converter solenoid. I have on a Buick but cannot guarantee this will create more problems BUT it worked for me...

May 27, 2015 | 2007 Chevrolet Impala

1 Answer

I just read on "Just Answers" about a similar problem about my 93 Buick Century torque converter clutch solenoid, that said as a temporary fix i could just un-plug the solenoid. Will that cause any more...


No idea its a auto or a granny box as they are known here in spain ,now to the un initiated mainly myself the torque converter clutch is mystifying as the only clutch in a auto box from my college days 40+yrs ago was the front clutch which has to engage before the gearbox will work and the front pump is driven by the input shaft from the converter which provides the pressure to work the gearbox brain and operate the pistons that lock the clutch and gears into place ,but ? iam old and no one wants my old fashioned time warp technology anymore

Aug 12, 2013 | 1993 Buick Century

1 Answer

Location of torque converter control solenoid on 1999 buick century


Under the big side cover on the transmission valve body on the drivers side of vehicle.

Oct 06, 2011 | 1999 Buick Century

1 Answer

1999 dodge ram take of WOT fine threw all gears and can feel the lock up ingage fine. at 55 mph crusing and heavy accel it goes like its in neutral.


The situation you describe could be (i) low fluid in the torque converter, (ii) a faulty signal to or from the torque clutch solenoids, (iii) a crack in the torque lock up solenoid pipe leading to fluid pressure loss, or (iv) the torque clutch solenoid modulator is faulty. 1) Is there plenty of fluid on dip stick? 2) have the (transmission diagnostic) codes read at Autozone 3) Check that the transmission electrical connector plug socket pins are clean and free of corrosion 4) Check solenoids - Drain fluid, remove transmission pan and remove filter. Now looking at the back edge of the valve control assembly from left to right (as viewed in direction of travel) is the force motor/pressure control solenoid, two identical square shaped solenoids corresponding to '2 to 3 shift' and '1 to 2 shift' and, last on the right, the forward clutch accumulator. On the front edge of the valve assembly, again from left to right, we have torque converter clutch solenoid (A) and immediately above it, pointing straight up, the torque converter lock up solenoid (B) and finally on the left the 'down shift 3 to 2' solenoid. Unplug the torque converter clutch solenoid (A) and using a small screw driver remove the solenoid's retaining clip from the close by slot. Remove the solenoid. Also disconnect and then remove the two securing bolts holding the torque converter lock up solenoid (B) assembly and drop that out. Thoroughly clean both solenoids. Check up the end of the pipe of (B) with the aid of torch and look for any signs of cracks. Check both solenoids across the connector pins for electrical resistance: (B) should have 20 to 25 ohms and (A) should be 10 to 15 ohms. If there is either no or infinite resistance then this indicates either a short or open circuit respectively and the solenoid should be replaced. Note that (B) is an 'on/off' type solenoid and can be opened and closed by applying a 12volt source across the pins; (A) is a 'pulse width modulated' solenoid and so cannot be easily tested for full operation in isolation.

Jul 06, 2011 | 1999 Dodge Ram

1 Answer

I have a 1995 Buick Century 6 cyl. The transmission shifts smoothly and into 4th gear but when I get to about 55 mph it shifts back into 3rd gear by itself and won't go back into 4th gear. What is...


Fourth gear in your vehicle doesn't exist. What feels like a fourth gear is the torque converter locking up. The lockup lockup is controlled by a solenoid in the side pan of the transmission, and the solenoid is controlled by the ECM (electronic control module) in response to several pressure, temperature and speed sensors etc. To determine which component is the problem you'll need a professional transmission mechanic with the proper diagnostic equipment.

Jun 28, 2011 | 1995 Buick Century

1 Answer

My car makes a big clunk when I am coming to a stop and engine shuts off , I have a 95 buick century with 70000 miles on it. it happens after the engine has been running over twenty minutes.


this sounds like the transmission locking torque converter clutch is not disengaging, this will kill the engine. This problem is most often caused by a defective TCC solenoid.

Mar 16, 2009 | 1995 Buick Century

3 Answers

1988 buick century dies when put in gear


Sounds like the lock up torque convertor in the transmission is stuck in the engaged position.There is a sensor switch under the hood that can be temporarily unpluged but leaving it unplugged can ruin the transmission. Take it to a tranny shop.

Nov 25, 2008 | 1990 Buick Century

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