Z26 automatic trans, overdrive problems

Guest · Post by **Guest** » Mon Mar 03, 2003 2:54 pm

Z26, 3100 , 4 speed Auto, shifts fine 1, 2, 3, won't go into overdrive, oil is fine,

when cruising at 100 km/h , and release gas , rmp drops like it did shift, press on gas and rmp goes back to 3 rd gear status

any help in diagnosis would be helpful

thanks

Guest · Post by **Guest** » Mon Mar 03, 2003 2:57 pm

sounds bad like a shift valve is stuck, or 4th gear clutch pack is toast, or low fluid (doubt it), I would be willing to bet JCZ26 would be more of a help..either way it sounds bad.

wicked-irocz · Post by **wicked-irocz** » Mon Mar 03, 2003 4:13 pm

Is this all the time or just one time? I had my transmission not shift into OD once, and I was really scared that Id need a new trany. The fluid looked like it could be a little burnt, but not much, and the level was fine. I didnt change anything and a few days later drove it to find it shifted great. Seams as if the only thing wrong was that the fluid got a little to hot, one of my friends owns a trany shop and said that could very well be but recomended me to change the fluid. I will change the fluid when it warms up for sure. Seams that driving around town with 800 lbs in a Beretta for an extended period of time isnt a good idea

Guest · Post by **Guest** » Mon Mar 03, 2003 4:21 pm

whats the 800lbs?

wicked-irocz · Post by **wicked-irocz** » Mon Mar 03, 2003 5:08 pm

People, supplies, and a few things that accumulate in the trunk of a car.

Guest · Post by **Guest** » Tue Mar 04, 2003 8:29 am

Wife drives it, Very cold here in maritimes, engine light came on and out, car sluggish for a few minutes she said, next morning light was off when she started it, I drove the car 5 days later and I noticed this problem, I took it for a few good runs since, still no shifting into overdrive, no burned smell, oil level good, a little old by the color, will change oil and filter tonite, to see if it changes, I beleive it is a stuck valve. Will keep ya posted

Guest · Post by **Guest** » Tue Mar 04, 2003 9:08 am

Quote I beleive it is a stuck valve. Doubt it, will elaborate when I have more time.

Guest · Post by **Guest** » Fri Mar 07, 2003 12:31 pm

I beleive I found my problem, a stuck solenoid,

http://www.atcdg.com/TechMain.htm

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