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Old 11-23-2008, 12:36 PM   #1
cutlass supreme FE3
 
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Loosing trans oil approx 1 pint every month.

I have a 1988 Cutlass Supreme International (130,000 kilometers) with an autobox with OD and noticed that the tranny fluid goes low every month. I need to add about 1 pint to get it back up to full hot marks but there is not much leaking on the pavement when parked. Maybe a few drips. I had the input CV shaft replaced on both sides and the gasket for cover on the side of the transmission.
I would assume loosing like a pint a month it would surely show up on the pavement when parked but now puzzled??
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Old 11-25-2008, 02:19 AM   #2
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just have to follow te greas stains. But I'm willin g to belive that it the axel seals since you didnt say you have replaced them.
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Old 11-25-2008, 09:13 AM   #3
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just have to follow te greas stains. But I'm willin g to belive that it the axel seals since you didnt say you have replaced them.
axle seals replaced both sides.
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Old 11-25-2008, 12:27 PM   #4
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Is there trans fluid in your coolant? The inside of the radiator could have a busted trans cooler. Happened to me.
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Old 11-25-2008, 08:21 PM   #5
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Is there trans fluid in your coolant? The inside of the radiator could have a busted trans cooler. Happened to me.
no trans fluid in the radiator.
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Old 11-25-2008, 10:24 PM   #6
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Anything on the undercarrage of the car?

My Delta's TH400 was leaking from the pan, but blowing back all over the bottom of the car
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Old 11-25-2008, 10:28 PM   #7
cutlass supreme FE3
 
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Anything on the undercarrage of the car?

My Delta's TH400 was leaking from the pan, but blowing back all over the bottom of the car
not leaking at the pan.
i replaced the pan gasket when i drained it and replaced the filter too at 120K
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Old 11-25-2008, 10:59 PM   #8
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Well if it's not leaking outside the trans, or from the trans cooler, then it must be leaking through the modulator.

Pull the vacuum tube off the modulator and see if trans fluid pours out. It could be bad and the engine just sucking the trans fluid up and burning it. If so now would be a good time for an adjustable pioneer one. (or regardless if you're down there)
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Old 11-25-2008, 11:17 PM   #9
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Second that
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'06 CHEVROLET Monte Carlo SS 53A4"Black Whale"
K&N FIPK, Hooker AeroChmbrs Sans Res, Solid Trns Mnt, Rotatd Torq Strut Mnt, Yelow Fogs, FRSTB

'92 PONTIAC Grand Prix SE 34TDCM5"Red Lobster"
WOT Tech Prgm 160 Deg, 2.5 Exh w/Cat & Hooker AeroChmbrs, KYB Struts, '96 Frnt Brks, '97 PD Frnt Sprgs, AWeb RSTB, 245/45/16 BFGCompT/A ZR

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Old 11-26-2008, 01:01 AM   #10
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where is the modulator??
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