# Trans fluid

**URL:** <https://community.cartalk.com/t/trans-fluid/16992>\
**Category:** Maintenance/Repairs\
**Created:** [July 21, 2008, 1:00am UTC](https://community.cartalk.com/t/trans-fluid/16992 "2008-07-21T01:00:38Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![wagontrain](https://avatars.discourse-cdn.com/v4/letter/w/858c86/32.png) [@wagontrain](https://community.cartalk.com/u/wagontrain)\
**Post date:** [July 21, 2008, 1:00am UTC](https://community.cartalk.com/t/trans-fluid/16992/1 "2008-07-21T01:00:38Z")

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transmission fluid in air filter, connecting tube, throttle body, and oil pan, 92 delta 88 3.8 135k, smoke on start up, and sometimes while driving, 1 1/2 pints daily, oil must be drained every so many hours of running.

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [July 21, 2008, 1:21am UTC](https://community.cartalk.com/t/trans-fluid/16992/2 "2008-07-21T01:21:11Z")

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The vacuum modulator diaphram on the transmission has ruptured and tranny fluid is being drawn into the engine through the vacuum hose. Look for a canister on the side of the tranny with a vacuum hose attached. Remove the vacuum hose and if tranny fluid runs out, replace the vacuum modulator on the transmission. Oh! And don’t lose the pin that comes out with the vacuum modulator.

Tester

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**Author:** ![NYBo](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nybo/32/17281_2.png) [@NYBo](https://community.cartalk.com/u/NYBo)\
**Post date:** [July 21, 2008, 9:20pm UTC](https://community.cartalk.com/t/trans-fluid/16992/3 "2008-07-21T21:20:27Z")

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The transmission in a '92 still uses a vacuum modulator?

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**Author:** ![ken\_green](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/ken_green/32/816_2.png) [@ken\_green](https://community.cartalk.com/u/ken_green)\
**Post date:** [July 21, 2008, 9:31pm UTC](https://community.cartalk.com/t/trans-fluid/16992/4 "2008-07-21T21:31:41Z")

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with my fords, this is when that happens. need to check that out. ( my 92 explorer has a vac modulator , don’t know about olds. )

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [July 22, 2008, 1:31am UTC](https://community.cartalk.com/t/trans-fluid/16992/5 "2008-07-22T01:31:01Z")

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Yes it does.

[http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c152800b203b](http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c152800b203b)

Tester

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**Author:** ![NYBo](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nybo/32/17281_2.png) [@NYBo](https://community.cartalk.com/u/NYBo)\
**Post date:** [July 22, 2008, 2:28am UTC](https://community.cartalk.com/t/trans-fluid/16992/6 "2008-07-22T02:28:58Z")

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That repair guide covers '86 - '99. I can see an '86 having a vacuum modulator, but a '92? Even my '89 Suburban had an electronically-controlled transmission (yes, I know it’s RWD and the OP’s car is FWD). Maybe Transman can give us a definitive answer.

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**Author:** ![NYBo](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nybo/32/17281_2.png) [@NYBo](https://community.cartalk.com/u/NYBo)\
**Post date:** [July 22, 2008, 2:29am UTC](https://community.cartalk.com/t/trans-fluid/16992/7 "2008-07-22T02:29:44Z")

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But there’s also no other explanation of the OP’s problem if there isn’t a vacuum modulator…

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [July 22, 2008, 2:41am UTC](https://community.cartalk.com/t/trans-fluid/16992/8 "2008-07-22T02:41:52Z")

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You got it!

Tester

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**Author:** ![transman618](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/transman618/32/24_2.png) [@transman618](https://community.cartalk.com/u/transman618)\
**Post date:** [July 22, 2008, 4:00am UTC](https://community.cartalk.com/t/trans-fluid/16992/9 "2008-07-22T04:00:47Z")

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Yea Bob. 92 uses a vacuum modulator. 4T60

transman