1995 Oldsmobile Ciera won't shift out of overdrive

KYLEMCNEEL

MEMBER
1995 OLDSMOBILE CIERA
4 CYL
FWD
AUTOMATIC
83,000 MILES

Ok. I have a 95 olds ciera sedan.2.2 4 cyl. It's an auto trans. Now there is a connector on the trans located in plain site on the front top part facing the radiator. It's a 4 pin connector and where it plugs into is blue. Now I figured I would plug it in for the heck of it. Well I would assume it's for the overdrive gear. Cause it drove great for about 4 miles after I hooked it up. Then when I slowed down it never came out of overdrive. But when I pulled the shifter into 2nd gear it shifted down. So I put it back in drive and it went right back in OD. When I stopped it stalled. It acted just like a standard. Since the I unplug the thing and it seems ok. So any clue on what it is exactly and if I can fix it. Cause the overdrive would be really nice for inerstate drive and trip.

2 Replies

NORTHWICHITA

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2 POSTS

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Wednesday, February 11th, 2009 AT 8:23 PM

NORTHWICHITA

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2 POSTS

I believe plugging in the connector allowed the torque converter to engage by locking up at higher speeds, and then, being defective, it didn't unlock when you slowed down. I don't believe a flush would fix this, I'm not a tranny expert, you should probably call a shop to check how they fix this, probably a new torque converter is in order. Or you can just drive it without the lock-up torque converter feature. One more note, that car with the 2.2 liter only comes with a three-speed transaxle. P.S. For what it's worth anyone, am interested in purchased a ciera/century with this engine (2.2).