Okay so I've had a superchips tuner for my truck for a while but it never worked properly. I've tried everything. Since it was an older model I went ahead and both the latest model of the tuner. Still same result. Basically what happens is, when I updated the tuner for my truck and installed it it messes up my truck. It wi run fine but if I get into the higher RPMS like around 3-4000 at about too speed my truck will rev up and down repeatedly from 3-4000 rpm and just continues. The truck seems to even be slower in first gear. Any idea how to fix this? I've tried reinstalling updates but nothing. The tuner didn't work on my old 3.0 motor that got blow, and it does the same thing to my new motor as well. Exact same results.

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2000 Ford Ranger XLT, stock rims and tires, 3.73 gears, 4x4, V6 Vulcan, torsion bar crank

Bump..

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2000 Ford Ranger XLT, stock rims and tires, 3.73 gears, 4x4, V6 Vulcan, torsion bar crank

Any problems before the tune. Sounds like it needs a tune up

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2000 Ford Ranger XLT 2WD ~ Work-In-Progress: 5.0 V8, M5R2 5 Speed, 4" Suspension Lift, 3" Body Lift, 33" BFG's, Bilstein 5100's, Comp Cams XE258HR-12, 24# Injectors, Torque Monster Headers, Flowmaster 70 Series,
1987 Ford F-150 Lariat 302 ~ Decommissioned
2006 Honda Civic LX 1.6 ~ Totaled
2011 Acura TSX K24 Base ~ Daily Driver, Supercharged 10PSI, 310whp 241lb/ft

What tune are you using? Auto transmission?

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2002 Blue Edge <-- Retired off road toy
3.0 Automatic, 2wd, 4:56's, 35x12.5 Kuhmo's, Lifted 2x, and more. TOTM July 2015
2002 Jeep TJ <-- NEW off road toy!
2.5L 5-spd, Skyjacker 4.5", 4:56's, Aussie Lockers, 33x12.5's, and more.
Build Thread --> http://www.fordrangerforum.com/proje...blue-edge.html
Youtube --> https://www.youtube.com/user/smashlizard

No problems before tune. And I've tried all the tunes and they do the same thing. And yes auto tranny

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2000 Ford Ranger XLT, stock rims and tires, 3.73 gears, 4x4, V6 Vulcan, torsion bar crank

my auto tuned just fine. Runs through the Rpms without any issue. It seems like it's misfiring imo. Probably something wrong that the tune uncovers

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2000 Ford Ranger XLT 2WD ~ Work-In-Progress: 5.0 V8, M5R2 5 Speed, 4" Suspension Lift, 3" Body Lift, 33" BFG's, Bilstein 5100's, Comp Cams XE258HR-12, 24# Injectors, Torque Monster Headers, Flowmaster 70 Series,
1987 Ford F-150 Lariat 302 ~ Decommissioned
2006 Honda Civic LX 1.6 ~ Totaled
2011 Acura TSX K24 Base ~ Daily Driver, Supercharged 10PSI, 310whp 241lb/ft

nothing would be wrong. It just got a different motor put in and it's still doing the exact same thing.

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2000 Ford Ranger XLT, stock rims and tires, 3.73 gears, 4x4, V6 Vulcan, torsion bar crank

have you updated the tuner?

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Black 2008 ranger sport 4.0 SOHC SAS'd and converted to 4x4 riding on a Dana 50 up front and a sterling 10.50 in the rear regeared with 5.13's, mickey thompson classic 3's rapped in 37x12.50 maxxis creepy crawlers

Did you customize the tranny shifting in the tune or not.

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1999 Ranger 4.0 and extreme Snap-on tool fetish

Yeah tried that twice. No luck

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I just used the pre set tunes. Never messed with the shifting

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2000 Ford Ranger XLT, stock rims and tires, 3.73 gears, 4x4, V6 Vulcan, torsion bar crank

Try changing the shift points and firm the shifts up

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1999 Ranger 4.0 and extreme Snap-on tool fetish