How to get better gas mileage??

Re: How to get better gas mileage??

Postby 1992RS » April 25th 2010, 1:44am

I got 17-21 in my rwd RS astro with a set of 235/75-15's cat delete and a glasspack with 175000 on the original motor and tranny, and that was with all my seats in and usually a heavy foot, alot can be said for proper maintnance..
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Re: How to get better gas mileage??

Postby hardlecure » April 25th 2010, 1:58am

1992RS wrote:I got 17-21 in my rwd RS astro with a set of 235/75-15's cat delete and a glasspack with 175000 on the original motor and tranny, and that was with all my seats in and usually a heavy foot, alot can be said for proper maintnance..


You pass E-Test with no cat?
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Re: How to get better gas mileage??

Postby astroturf » April 25th 2010, 2:00am

1992RS wrote:I got 17-21 in my rwd RS astro with a set of 235/75-15's cat delete and a glasspack with 175000 on the original motor and tranny, and that was with all my seats in and usually a heavy foot, alot can be said for proper maintnance..


Is that the stock size tire for your van?
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Re: How to get better gas mileage??

Postby Mr_Bowtie » April 25th 2010, 2:11am

astroturf wrote:
1992RS wrote:I got 17-21 in my rwd RS astro with a set of 235/75-15's cat delete and a glasspack with 175000 on the original motor and tranny, and that was with all my seats in and usually a heavy foot, alot can be said for proper maintnance..


Is that the stock size tire for your van?


Thats a 1" bigger tire then stock. Proper maintnance.......I thought you hardly drove that thing cause it always overheated? :lol:


If I remember correctly I think the transmission crossmember might have to be notched out to fit the 2 speed S10 transfer case in there correctly. Only one way to find out though. :chevy:


Its all about maintaining it & driving it nice and slow. Do the speed limit & save gas.
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Re: How to get better gas mileage??

Postby hardlecure » April 25th 2010, 6:07am

Oh yeah... how could I forget. Another GREAT way to say fuel is to draft a transport truck. I do it on long trips. I get about 15 or 20' behind a semi and hardly use the gas at all.

And like the others said, and a big one I forgot to mention is tire pressure. Also, check your air and fuel filter too.
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Re: How to get better gas mileage??

Postby Leeann_93 » April 25th 2010, 4:27pm

First thing to do is a standard tune-up; spark plugs, wires, cap, rotor, air filter.

Clean the MAF sensor with the correct cleaner - available at any local autoparts store - gently! You don't want to damage any of the wires.

Check/clean the Idle Air Control valve.

Have the timing checked and adjusted (if you can't do it yourself) - the spec is 0°.

The tires must be the proper size (if they're not, your mileage calculations won't be correct) and properly inflated.

Does your van reach proper temperature? On these, the proper temp is 195°. If not, a coolant flush/change and thermostat replacement are in order.
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Re: How to get better gas mileage??

Postby astroturf » April 25th 2010, 6:23pm

Leeann_93 wrote:First thing to do is a standard tune-up; spark plugs, wires, cap, rotor, air filter.

Clean the MAF sensor with the correct cleaner - available at any local autoparts store - gently! You don't want to damage any of the wires.

Check/clean the Idle Air Control valve.

Have the timing checked and adjusted (if you can't do it yourself) - the spec is 0°.

The tires must be the proper size (if they're not, your mileage calculations won't be correct) and properly inflated.

Does your van reach proper temperature? On these, the proper temp is 195°. If not, a coolant flush/change and thermostat replacement are in order.


Very clean and concise Leeann. I tried but couldn't say it as well. I hope it helps them out. Jim
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Re: How to get better gas mileage??

Postby wizical » April 26th 2010, 1:32am

to get better mileage
use mexican overdrive lol
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Re: How to get better gas mileage??

Postby 1992RS » April 26th 2010, 5:51am

well, no the tires were oversized a bit, and as far as driving it I put about ten thousand miles on it the seven or so months I owned it before it started overheating on me so yeah the maintenance thing was proper up til the rad plugged on me after the w.p. puked on it other then that it was always well maintained.
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Re: How to get better gas mileage??

Postby Mr_Bowtie » April 26th 2010, 5:55am

1992RS wrote:well, no the tires were oversized a bit, and as far as driving it I put about ten thousand miles on it the seven or so months I owned it before it started overheating on me so yeah the maintenance thing was proper up til the rad plugged on me after the w.p. puked on it other then that it was always well maintained.


I was just foolin' with ya! :lol:



I just got 17MPG with my '92 AWD this week going to work and back. Not bad for a high mileage rust bucket! :chevy:
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Re: How to get better gas mileage??

Postby daisykleen » April 26th 2010, 2:11pm

Michelin tires 7021515 tire pressure 32 to 35 check weekly use mobile 1 syn oil and filter use 89 or 91 keep it tune up with ac delco cap rotor wires only have 1 bench seat keep it clean and wax don't drive like you going to a fire and and on the open highway the on board computer say's i get avg 22 to 23 city 15 to 18 :wave: JOHN
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Re: How to get better gas mileage??

Postby Taffy25 » April 26th 2010, 3:09pm

hardlecure wrote:Removing the rear seats can't really effect the mileage of a van.... I mean they weigh a combined... 150 pounds maybe added to the 3 ton GVW? How much could they worsen the mileage?


The rear bench in my 88 prolly weighs that on its own, its just a bunch of angle iron welded together with some hinges so it lays out, when i removed the rear seats for mot the van was noticably quicker, no idea if it saved fuel though.
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Re: How to get better gas mileage??

Postby ihatemybike » April 26th 2010, 4:02pm

dup
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Re: How to get better gas mileage??

Postby ihatemybike » April 26th 2010, 4:07pm

LEVE wrote:buy a Prius.
VW Golf TDI, same mileage, much for fun to drive.

LEVE wrote:
In an S10 you can select 4x4 or RWD so yep.... it'll help.
Please explaine this a little further to me, an Astro Neophyte... It's a project I would consider, conversion to 4WD. What's the payback in MPG over my now AWD Astro?
The two speed transfer case is a poor way to increase mileage. There is no way to unlock the front hubs so all the components are still having to spin and thus the drag is still present. I wouldn't recommend modifying the drive train for the sole purpose of mileage gains.



Think of your brake pedal as the enemy, every press is fuel wasted. I do a lot of neutral coasting, couple places around town I can coast the van for over a mile without tying up traffic. I love seeing 99 MPG light up the Info Center. I coast to lights and stop signs, almost never touch the brakes until the van is under 25 mph already. At long lights that I know the light sequence, I shut my engine off. Know your route before hand. Can you take a route where the uphills aren't as steep without adding much distance? Park your van where you can pull forward when you leave, backing into spots where appropriate. Takes less gas to back into a spot with a warm engine/trans, than to back out of a space cold.

On GasSavers.org a lot of people have their tires inflated to 40 PSI, I've been doing this and haven't noticed any ill effects on driving.

If your van doesn't have an Info Center or Tachometer, get a ScanGaugeII. Keep the current MPGs displayed to make you more conscious of how your driving effects MPG and the RPMs try to keep under 2K while getting under way.

With a weak fuel pump, random cylinder misfire, and a lot of city driving helping my sister move, I was still able to have Grumpy average almost 16 MPG. Now that the pump is fixed I see over 20 mpg per tank pretty regularly on my commute to work.
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Re: How to get better gas mileage??

Postby Mr_Bowtie » April 26th 2010, 4:12pm

20+MPG with AWD...........I wish! I have given the Van a tune up, fuel regulator, nut kit, and fuel & air filters in the last 15K miles......17-18 MPG is my best so far. I may try pumping the tires up to 40psi....see what that does for a tank full. :think:
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Re: How to get better gas mileage??

Postby benoliver [OP] » April 26th 2010, 4:50pm

Just FYI...The van's temp runs at about 125 degrees...It probably gets a lot worse mileage than what I posted according to my husband..maybe 9, which is killing the pocketbook. How can I get the temp up?
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Re: How to get better gas mileage??

Postby ihatemybike » April 26th 2010, 4:52pm

To date the best mpg mod I've found to a properly running van is a ScanGaugeII. Nothing improves mileage better than receiving constant feedback from the computer.
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Re: How to get better gas mileage??

Postby Mr_Bowtie » April 26th 2010, 5:14pm

benoliver wrote:Just FYI...The van's temp runs at about 125 degrees...It probably gets a lot worse mileage than what I posted according to my husband..maybe 9, which is killing the pocketbook. How can I get the temp up?


Sounds like your thermostat is stuck open. I would start with changing the thermostat with a new 195* thermostat($15 + whatever coolant you lose while doing the job). If the Van doesn't get up to 195* its not burning fuel as effecient as it can.......as you are experiencing now. :chevy:

ihatemybike wrote:To date the best mpg mod I've found to a properly running van is a ScanGaugeII. Nothing improves mileage better than receiving constant feedback from the computer.


I use to have one & loved it......I should get one again now that I own a '96 & I can actually use it. :D
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Re: How to get better gas mileage??

Postby benoliver [OP] » April 30th 2010, 4:22pm

We changed the thermostat and now the darn thing runs cooler than it did :banghead:

What are the chances the gauge is wrong?? Any other ideas..
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Re: How to get better gas mileage??

Postby astroturf » April 30th 2010, 4:24pm

benoliver wrote:We changed the thermostat and now the darn thing runs cooler than it did :banghead:

What are the chances the gauge is wrong?? Any other ideas..


Take a pic of the gauge and post it here, Please. Jim

PS When it is fully warmed up.
My Cup is neither half empty nor half full... But has a hole in it. Holy Cup Holders Batman. LOLz, Jim
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astroturf
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Firing on 8 Cylinders (L7)
Firing on 8 Cylinders (L7)
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