rpm at highway speeds

[mindaugas]

What kind of rpm do people run at 65 - 70mph? Hills or flat, my VX seems to be stuck at 3k rpm @ 70mph. Seems high to me for a motor this size, but idk how transmission, gearing and all that impact it. My outback does 70 at 2200rpm which is prob a horrible comparison.

[VXorado]

Since our VXs only have 4 speed transmissions & come stock with 4.30 axle gearing, you can expect higher RPM when you hit highway speeds. My RPM is usually 2000-2500 at 65-70 MPH if i'm just cruising along but I have larger tires which will require less rpm to go the same speed as stock tires.

[Ldub]

Are you in "power mode" or "normal mode" with regard to the trans control button on the ctr console?

If in "power", try "normal", the TC will lock up at a lower rpm.

[deermagnet]

3000 at 70 mph is too much. To see if you're getting into overdrive just shift down to third gear when cruising at 60 mph. If the rpm's jump high you were in overdrive. Shift back to drive and the rpm's should drop back to where they were. If you shift to third gear and nothing at all happens then you were in third gear already and you're not getting up into overdrive and something is wrong.

Mark

[vt_maverick]

3K sounds about right to me and I get 15-17 MPG on the highway (not bad considering my heavier tires, rims, and Kilby skid plates). I find it hard to believe a 4-speed truck is going to go 70 MPH at 2000 RPM unless it's downhill.

[Y33TREKker]

I'd always considered the VX's rpm's at highway speeds high too. That's the trade-off for the VX's low-speed acceleration and high-torque capability though.

[mindaugas]

Hmm, maybe I'm not getting into OD. Do you think the fuel pressure regulator or EGR would cause a little higher rpm on the highway? FPR is shipping.

[blacksambo]

My highway speed is under 2500rpm, that's approx. 70mph. Same with my wife's '99 VX. So, I think you must have something going on. Maybe check the accuracy of your tach?

[deermagnet]

Yes, it should be under 2500 rpm, possibly as low as 22-2300 after TC lock-up in overdrive. Even without TC lock-up it should not be more than 2700 rpm in overdrive.

Everyone just report here what you're seeing and there will be no guessing.

Mark

[mindaugas]

thx, I'll let u guys know what it's at after I get the new FPR in.

[VXorado]

Are you in "power mode" or "normal mode" with regard to the trans control button on the ctr console?

I decided about a year ago to always run in "power mode" and haven't looked back. You get quicker shifting in power mode and my gas mileage has maintained the same 14-17 MPG. When you drive at highway speed the transmission will still shift to OD & lower the RPMs to normal until you start accelerating it will downshift to third gear pretty quickly.

When I was in "normal mode," The transmission always felt like it was trying to shift up constantly & too early where I would lose the power ban going up hills. It may just be my VX, Colorado altitude or larger wheels but my VX transmission feels much smoother on power mode.

[RickOKC]

I drove at 70MPH for a few seconds before a traffic jam slowed me down...

2350 - 2400 RPM (32" tires)

[BOARZHEAD]

Im at 2200 with my 37" tires at 70

[vt_maverick]

Drove 140 miles this morning, mostly on the interstate, but somehow forgot to look at the tach. : Driving another 150 something miles this afternoon though so I'll try to remember.

[rsteinmetz70112]

Im at 2200 with my 37" tires at 70

Bigger Tires = Lower RPM