1994 Oldsmobile Ciera Goes out of OD/4th gear

1994 OLDSMOBILE CIERA
327,000 MILES • 6 CYL • FWD • AUTOMATIC
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JPCHARLTON
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Two symptoms: 1) About 3 weeks ago it started to act up. When going up a slight grade the engine would speed-up and slow-down at about 1 second interval. I think that it was shifting from 4th gear to 3rd gear, back and forth. 2) Yesterday on the freeway on a long trip it seemed like the engine was running fast. I dropped the transmission from OD to D and no change in engine sound. I was consuming more gas than normal. I stopped for gas and tested the OD to D again. This time it worked. Later in the trip the engine was running fast again and the OD to D test failed. I need help in getting this resolved, answered and someone to walk me through the fix. Thanks
May 6, 2009 at 2:45 PM
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DOCFIXIT
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Hi
Transmission is slipping due to worn clutches and/or seals.Check fluid level and color is it pink/red or brown to black? You may want to take to a trans repair shop for diagnosis and est. of repair.
Sorry I have no silver bullet
Let me know
Thanks for donate
May 7, 2009 at 10:16 AM
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JPCHARLTON
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It is my understanding that the problem is not in the transmission itself, but in the control of it. Something to do with the control. Perhaps a sensor that is not receiving the right data or some other intermittant problem. Please review my original symptoms and get back to me. Thanks, John
May 7, 2009 at 11:57 AM
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DOCFIXIT
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Yes I have and the symptoms do not indicate soleniod fault. You can have the trans checked for function and pressure tests. What color is the fluid?
May 7, 2009 at 5:52 PM
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JPCHARLTON
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Sorry I didn't include the color of trans fluid, it is pink, but seems to have black particles on some areas of the dip stick. I will follow up with a checkup, thanks.
May 7, 2009 at 7:09 PM
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DOCFIXIT
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Black specks indicate clutch material. When you get test results post and will advise.
May 8, 2009 at 3:56 PM
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MIKE21091
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mine does the same thing, for some reason if you can keep the temp gauge at or under the mark between 100 and 220 you wont loose o/d, i think its a pressure problem when the tranny fluid is hot and thin, took me a while to figure it out
Dec 29, 2009 at 8:40 AM