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Gasket Failure A/T Solenoid Pack

 
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  • 1 Post By rcalzadilla
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Old 23 Jan 2018, 03:33 pm
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Default Gasket Failure A/T Solenoid Pack

Replaced gasket for Solenoid Pack back in May 19, 2017, 104K miles. No more leaking A/T fluid but, now at 108K miles, Jan 2018 started leaking more than with old gasket.
No choice but replace it again but wonder if there isn't a better quality gasket I should buy.

I feel confident of the cleaning, torque value but, that was my first time.
Any comments would be appreciated.
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Old 23 Jan 2018, 04:34 pm
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Default Re: Gasket Failure A/T Solenoid Pack

May be a restricted trans oil cooler
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Old 23 Jan 2018, 05:04 pm
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Default Re: Gasket Failure A/T Solenoid Pack

Yep,

These don't normally leak. Chances are something else is causing the issue. It could be excess pressure from a blockage or just a piece of old gasket stuck to the facing. The gasket is easy to fix at home but a blockage will be hard to diagnose yourself.

A good and "honest" tranny shop can likely diagnose and possibly fix this in under an hour. If you compare that to your time and cost of fluid, the shop may be the smarter choice on this one.
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Old 23 Jan 2018, 07:50 pm
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Default Re: Gasket Failure A/T Solenoid Pack

A restricted cooler won't cause this, there is a bypass valve in the cooler circuit if the cooler is restricted. Basically, oil exits the torque converter ( where the heat is generated ) flows through the cooler then heads to the lubrication circuit.

Did you replace the upper and lower gaskets? ( see pic )

Is the spacer plate flat?
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File Type: jpg SOL_PACK.jpg (63.6 KB, 18 views)
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Old 24 Jan 2018, 08:11 am
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Default Re: Gasket Failure A/T Solenoid Pack

Rethinking back the details of my work, I have discovered the following facts:
1-Driveway is inclined higher at the front of the vehicle and lower at the back,
in the work area.
2-Not sure if I moved the car to a level area of driveway to check and fill lost
transmission fluid. Maybe I overfilled and created the extra pressure.
3-New gasket did not leak for several months because PT is driven very little
and mostly short trips: May be why it leaks now and not originally.
Does this make sense to you guys?

Retired and limited budget so I can't take it to a shop. I'll just take it easier next time.

Very appreciative for your replies.
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Old 24 Jan 2018, 08:44 am
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Default Re: Gasket Failure A/T Solenoid Pack

That might be it.

This would likely not cause the gasket on the solenoid pack to leak. However, if you've over filled the tranny, you may be getting a leak from the o-ring on the fill tube located just above it.




Check the ATF level with the car on level ground. If over-filled, remove the excess fluid. You can siphon it out the filled tube with a small pump or aspirator ball. Or you can drop the pan, drain off and then refill to the proper level. Check that filler tube o-ring for a leak too.

However, if you are sure it's coming from the solenoid pack, then there's likely something going on with that gasket. And having a bypass valve does not preclude the chance of over-pressurization since it usually occurs when a bypass valve is the problem. But my bet is the o-ring on the filler tube.
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Old 24 Jan 2018, 09:36 am
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Default Re: Gasket Failure A/T Solenoid Pack

Maybe your short trip driving didn't get it up to operating temp. Go back and check your torque on the bolts. You may find them loose. A little FYI for you, when I replaced mine, I didn't have the torque values, so just "snugged" them to what I thought was tight enough. Apparently it was because mine never leaked. And because it's such a thin gasket, it's easy to bend it when installing. You HAVE to be careful with it.
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Old 24 Jan 2018, 06:05 pm
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Default Re: Gasket Failure A/T Solenoid Pack

Quote:
Originally Posted by rcalzadilla View Post
Rethinking back the details of my work, I have discovered the following facts:
1-Driveway is inclined higher at the front of the vehicle and lower at the back,
in the work area.
The only thing this would do is keep some leaking fluid on the trans that would drip off when you drive it.

Quote:
Originally Posted by rcalzadilla View Post
2-Not sure if I moved the car to a level area of driveway to check and fill lost
transmission fluid. Maybe I overfilled and created the extra pressure.
Over fill won't cause increased pressure.

Quote:
Originally Posted by rcalzadilla View Post
3-New gasket did not leak for several months because PT is driven very little
and mostly short trips: May be why it leaks now and not originally.
Did you read my post 4 and look at the attached picture ?

Did you look for a leak in another or higher area like cooler lines?

The leak might be coming from the solenoid pack not the attaching gaskets.
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Old 01 Apr 2018, 04:04 pm
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Default Re: Gasket Failure A/T Solenoid Pack(SOLVED)

No more leaking!
1-Replaced with a new solenoid pack and gasket.
2-This time I moved all wire harnesses aside, very carefully, to insure I could place the solenoid pack in a totally horizontal position as opposed to inserting it one side first and then changing it to horizontal. This insured that the gasket would be perfectly flat, no kinks.
Thanks for all your help. Happy Easter!
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