Your 1988 Dodge Colt Vista Wagon has a 2liter motor and 5 speed transmission everything works well except the gear ratio between 4and5 is same there shift solinoid in transmission?

A 1988 Dodge Colt Vista Wagon with a 2-liter engine and 5-speed transmission doesn't use a shift solenoid in the way a modern automatic transmission does. The 5-speed is a *manual* transmission, meaning you shift gears mechanically using the shifter. There's no electronic component controlling gear selection.

If 4th and 5th gear feel the same (i.e., the same ratio), the problem is *not* a faulty solenoid (because there isn't one). Instead, the most likely culprit is a mechanical issue within the transmission itself:

* Gearset Problem: The most probable cause is a problem with the 4th or 5th gear components inside the transmission. Something might be worn, broken, or misaligned, causing them to function as if they have the same ratio. This could include worn or damaged gears, synchronizers, or bearings.

* Shift Linkage: Although less likely given your statement that "everything works well," it's possible there's an issue with the shift linkage that's preventing the transmission from fully engaging 5th gear. This could be a bent or broken linkage component.

What to do:

You'll need to have a mechanic who's experienced with manual transmissions inspect the transmission. Simply describing the symptoms ("4th and 5th gear feel the same") won't be enough for a diagnosis. A thorough inspection will be required to pinpoint the exact problem and determine the necessary repairs. This likely means a transmission tear-down, which is a significant job.