Auto transmission issue

BRADY GUARD

MEMBER
1995 BUICK CENTURY
3.1L
AUTOMATIC
120,000 MILES

The car shifts like it is in neutral. Rev it up and it slips then catches. After about twenty minutes it then shifts normal. No slipping at all. I noticed that fluid is good color. Although I lose a quart every six days. No visible leaks. Could it be leaking into radiator. Thus losing fluid and pressure until the car warms up and the radiator pressurized. I replaced the fluid and shift modulator. Please help.

3 Replies

HMAC300

MECHANIC
48,601 POSTS

Normally without the loss of fluid what you describe is hardened seals on clutch paks and they do not seal so fluid leak past them then when it warms they get softer and will seal to operate correctly.

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Sunday, May 15th, 2016 AT 3:34 PM

BRADY GUARD

MEMBER
2 POSTS

Where is my loss of fluid going if I have no leaks?

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Sunday, May 15th, 2016 AT 3:37 PM

HMAC300

MECHANIC
48,601 POSTS

Then check to see if your radiator is getting oily or is it going out the vent. It could be a pump seal as well and would leak out under torque converter so would look like a main bearing seal leak.

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Sunday, May 15th, 2016 AT 4:17 PM