Engine Performance problem
1999 Chevy Astro 6 cyl Two Wheel Drive Automatic
We have several Chevy Astro Minivans used in an A/C Service Company. They are V-6, Auto Trans W/ Overdrive, Rear Wheel Drive.
They average about 8-10 MPG and cannot carry much weight at all or they will not make it up the steep inclines. It is a mountainous region.
The top speed limit on the island is 35MPH.
We need to be able to carry more than just our tools in the vans and get more MPG also. As it is the vans stay in first or second gear going up hill. When coming down an incline even downshifting to 2nd gear doesn't provide the necessary slow down.
Our question is; to be able to carry a normal load and be able to climb and decelerate normally as well as improve fuel efficiency, should we use a higher gear ratio in the rear differentials, or replace the overdrive transmissions with a 3 spd unit, or both, or we're open to suggestions.
This is a serious question with far reaching implications to a real business. Serious answers with corroboration would be appreciated.
have the same problem?
Sunday, October 4th, 2009 AT 1:34 AM