Will not up shift or down shift through the gears?

INTRUDER

MEMBER
1991 DODGE STEALTH

I have a 1991 Dodge Stealth rt automatic trans with 86,000 miles that will not up shift or down shift through the gears manually or otherwise. The car seems to be in high gear only (very slow takeoff up till 45mph then picks up speed fine) car can be manually down shifted to 2nd or low gear at speed with no change (not dropping to lower gears) any suggestions on what to check? Thanks!

1 Reply

DANNY L

MECHANIC
5,648 POSTS

Hello, I'm Danny.

The first thing you should check is the transmission fluid level and condition. Make sure the fluid level is within the proper fill range and the fluid condition is not burnt or dark brown in color. Here are a few tutorials for automatic transmissions for service and repair:

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Next let's run the codes to see if any are stored:

https://www.2carpros.com/articles/retrieve-trouble-codes-for-chrysler-dodge-plymouth-odb1-1995-and-earlier-car-mini-van-and-light-trucks

It sounds like the first gear shift solenoid is stuck and not working. Please go over these guides and get back to us.