I have a 1999 Jeep Grand Cherokee Limited Edition with a 4.0L 6 cylinder that has 143000 that has almost a new engine. When I am driving every day to college no matter what I do, when I accelerate it if do not rev the RPMS above 3000 RPMS shifting from 2nd to 3rd gear it would what I think mis-shift. Now I think this because when it shifts from 2nd to 3rd and my RPMS are around 2000 when it gets to third the RPMS jump to 3500 and then shifts really quickly to 4th gear. After that all gears shift normal. So my question is what it the problem would it be solved if I reprogram the computer or is it a major transmission problem? I have replaced most of the engine, sensors, wheel bearing, and differentials.So mainly I am asking do I need a new transmission or is there another way to fix it?
sorry gut it looks like you need to write a $ 3200 check out now cottman trans shop will test it for free. call one today.
Those transmissions had issues with an electronic part called a governor transducer, which controlls shifting. I would let a transmission shop have a quick look and check this.
transman
Do NOT go to a chain transmission shop (AAMCO, Lee Myles, Cottman, etc.) unless you want to pay for unneeded repairs. Instead, ask friends, coworkers and relatives about recommended independent transmission shops.
An independent transmission shop that has been in business for at least three years is more likely to be honest and to do a competent job than a chain operation. Transman is likely to be correct about your transmission just needing an electronic component to be replaced.
If you go to a chain, they will probably try to replace the entire transmission. As someone else on this board recently joked, AAMCO means “All automatic transmissions must come out”.