Dropping out of overdrive when temp goes too low

Anything 4th gen TECH related

Post Reply
KawBoy
Registered User
Registered User
Posts: 3
Joined: Thu Dec 18, 2014 12:39 am

Dropping out of overdrive when temp goes too low

Post by KawBoy »

Hi folks. Newbie with an 89 DX with the 4 spd automatic.
Relatively low miles (98K) and runs great.

Only one annoying trait is that the 4 speed automatic drops out of overdrive
at any speed when the temperature Gage goes down to the bottom mark.

In my geography a low temperature (when going down long shallow downhills)
is fairly common in this car but it then takes several miles to warm the engine
back up again enough for the overdrive to kick in again.

I don''t know if there is some sort of temperature interlock with the transmission
but I'd love to know how to bypass it ? My gas mileage would improve a bit
as it drops out a few times during my long commute.

Thanks !

Post Reply