Re: Gas mileage & A/c ?

[GSRC]

OK I give up -- I had a tune up around 90k miles on my '96 P/A saw 30mpg 1 time on 1000 mile trip . before and after that i have been in the 21 - 23mpg on 300mile trips, cruise control , no mountains, @ 78mph .

What part is broken ? i would love to see the 30's mpg.

Also i found this forum to figure out why my A/C is blowing out the defrost vents adn not the cabin vents ? I pulled the ac control out and it is an "electronic box" and no access to other parts.
I have been told the Vacumn control or acuator or ? where is this part and what needs to be removed to replace ?

Thank you,

[imidazol97]

Originally Posted by GSRC

i would love to see the 30's mpg.

Also i found this forum to figure out why my A/C is blowing out the defrost vents adn not the cabin vents ? I pulled the ac control out and it is an "electronic box" and no access to other parts.
I have been told the Vacumn control or acuator or ? where is this part and what needs to be removed to replace ?

Thank you,

Buy good gas and drive gently. Slow down to 65. Don't accelerate hard. If your car has the instant readouts for gas mileage you should be able to 31 or so at 65. Overall for the trip might be 29. Hard starts, low tire pressure, all hurt. My tires at 15 33-35 cold.

For the AC, check to be sure the vacuum line to the heater controls inside is hooked up on the motor. It should come out of the motor and go to the passenger side as part of a bundle of wires. It may come out of the UIM next to the hose for the brake booster.

I'm not sure where your vacuum reservoir box is on that car. Earlier leSabres had it on the firewall next to the relay center--it looked like a built in part. The hose gets pulled off there often when someone changes the back plugs (me for example). On my 98 leSabre the little black tube from the UIM carries vacuum to the storage tank under the front fender in front of the wheel==behiind the headlights.

IF you have vacuum going inside the car than take down the plastic panel above the passneger's foot. Look for the programmer box and the soft plastic connector in the corner of the box.

Pull the violet line off up toward the firewall where it meets the black plastic line bringing vacuum in. make sure there's vacuum there from the motor when it's running.

The top of box can snap off with two spring prongs on one side and the plastic connector can be moved out a little. The blue line goes to the AC doors (I believe) and the line on the inside and outside of the connector and bypass the softened connector with aquarium line or a piece of 1/8 inch gas line about 1.5 inch long.

First you can check to be sure the vacuum motor for the damper inside the AC box that closes to stop the air from going out of the defroster is working. II pulled off the line an no vacuum came to it. So I connected one of the other lines and the damper would move when I would press on different buttons.

The rubber nipples inside the plastic connector soften with age and suck shut under vacuum. It does it most on the one for AC, probably because it was used most when the plastic was very soft with high temps inside the car.

http://i86.photobucket.com/albums/k1...7/DSC03124.jpg

I cut all the tubes on mine and connected them with free piece of 1/8 gas line from NAPA store. They keep a box of short pieces, miscuts, end pieces whatever. I used about 6 inches and cut it into 5 pieces.