What is the fuel range of the Blazer/Jimmy?

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Feb 29, 2016 | 02:09 PM

#11

LesMyer

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From: North Central Indiana

Quote:

Originally Posted by ACA1001

I've noticed sometimes at different speeds that the RPMs will sort of "lurch" upwards a bit, then go back a bit, then lurch upwards, then go back. This in particular seems to happen at around 60 mph, however if I then press the accelerator harder and up the RPMs (and speed) a bit, the lurching stops. Is that the TCC slipping?

Yes, this could be the TCC operating, but it shouldn't do it on a level road at constant speed. When you press the accelerator harder you can put more load on and prevent the TCC from engaging. Or higher speed actually might keep it engaged better.

Last edited by LesMyer; Feb 29, 2016 at 02:15 PM.

Feb 29, 2016 | 02:13 PM

#12

ACA1001

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Quote:

Originally Posted by Lesmyer

That certainly could be the TCC disengaging and then engaging again. RPMs up when disengaging and RPMs down when engaged. Usually it disengages when you are accelerating or going up a hill. You want to keep TCC engaged as much as possible for least slipping and best mileage.

It used to not do that, but I had to leave it basically sit outside a winter, and I think that that probably is causing it to act up.

Feb 29, 2016 | 02:24 PM

#13

LesMyer

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Posts: 4,340

From: North Central Indiana

Quote:

Originally Posted by ACA1001

It used to not do that, but I had to leave it basically sit outside a winter, and I think that that probably is causing it to act up.

Sometimes brake calipers drag and make the vehicle harder to pull, giving less mileage too.

Well good luck! If you are interested in cars and learning to work on yours, the Torque Pro Android app and the BAFX OBD2 bluetooth adapter is invaluable as a diagnostic tool. Plus I'm sure it could help you learn to drive for mileage. You can even display the slip speed of the transmission torque converter and watch the TCC hook up with this. Pretty cool stuff.

Best wishes,

Les

Feb 29, 2016 | 02:26 PM

#14

ACA1001

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Quote:

Originally Posted by Lesmyer

Thank you for the information

Feb 29, 2016 | 06:20 PM

#15

2004 Blazer

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Joined: Aug 2015

Posts: 216

From: Mt Vernon/Fort Hunt, Virginia

With a 3:42 gear I average about 15 MPG combined City/Hwy and refuel at about 225 miles.04x4dr

Feb 29, 2016 | 06:37 PM

#16

ACA1001

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I would love to do an engine swap with one of the new Ecotec3 4.3L V6 engines as it is supposed to get 22-24 mpg on the highway for the Silverado pickup trucks, so one could only imagine what it might get when put into the S10 Blazer/Jimmy. With an 18 gallon tank, range would be 396 - 432 miles!

Feb 29, 2016 | 07:48 PM

#17

TMM217

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Joined: Mar 2011

Posts: 445

From: Southeast Michigan

If your worried of running out just get a 2 gal gas can and keep in truck. Also you could fill up reset trip and run it out of gas to see how far you can go.

Feb 29, 2016 | 08:00 PM

#18

ACA1001

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Wouldn't running it out of gas damage the vehicle? I know that can be the case with the newer vehicles at least. However it isn't so much running out as just $$$. Better fuel efficiency is easier on the wallet.