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transmission sticking[ALL/1998] posted by Mark on
Friday, 18 April 1997, at 7:57 a.m.
I just bought a 1988 240 DL and I recently noticed the following problem:
When it is cold outside, the automatic transmission has a hard time going from 2nd to 3rd gear. Especially when I first start out, it will almost red-line (I put a tach in and took out the clock) before shifting harshly up to the next gear. I must admit I know next to nothing about automatic transmissions, so aside from checking the fluid, is there anything else I can do? It seems to me like something is sticking due to the cold to prevent the upshift. It shifts really smoothly in warm weather (even when just starting out). Thanks for any help.
Mark
Re: transmission sticking[ALL/1998] posted by Bill on
Wednesday, 23 April 1997, at 12:21 a.m.
Mark, With regards to your shifting problem I'd like to offer a possible solution to your problem. The seals in the internal workings of the transmission can leak by when cold and then when the fluid warms up they soften and begin to seal properly and unusual problems as you have described go away. I have "repaired" many automatic transmission problems with cold operation symptoms as yours by simply adding a can of seal conditioner. This softens the seals and helps them to seal up when cold. I have never seen any damage to a transmission caused by adding the seal conditioner. Make sure you don't overfill the transmission. If there isn't a drain plug, you can use a suction gun through the dipstick tube or take a cooler line loose and crank the engine and look out. Good Luck dude. Sinsneerly Bill