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4 Wheel Drive/SUVs/1995 ISUZU TRUCK RODEO 4WD NOISE

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Expert: - 8/15/2009


Question
I GOT  A 1995 RODEO 42WD 3.2L MFI SOHC 6CYL AND WHEN I PUT IT IN 4WH OR 4WL IT STARTS TO MAKE A WHINING NOSIE WHILE DRIVING CAN YOU HELP

Answer
Larry,

This is quite common with 4-wheel drive vehicles.  This is due to the transfer case gear ratios.  When you put the transfer case into 4-wheel drive, you are turning another set of gears to run the front differential.  

If you think the whining is excessive, change the fluid in the transfer case.  If this doesn't help, take it to a reputable transmission shop that works on 4-wheel drives, and have them check the transfer case out for worn bearings, seals and gears.

Carl

4 Wheel Drive/SUVs

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Carl Brandt

Expertise

Will discuss suspensions, lifts, lockers along with tire suggestions. Trail ratings and possible requirements needed for specific type of trails. Safety equipment and what you should carry with you. Certified off-road instructor. I am not a mechanic, and 4-Wheeling is a hobby, so if I can't answer a technical question it is due to my mechanical knowledge being related to vehicles that I have owned, or have worked on. I do not have manuals on all vehicles.

Experience

40 plus years of 4 wheeling in a variety of vehicles. At the present time, my major off-road rig is a 94 Jeep Wrangler with a spring over and a 1 1/2" suspension lift. This gives me a total lift of 7" or so. I have lockers front and rear. I have removed the track bars, and sway bar for maximum articulation. I am running a stock 2.5 ltr 4 cylinder with a Jacobs ignition along with a cold air high flow filter. It has 4.56:1 gears with a Dodge NV4500 transmission along with a 3.8:1 Atlas II transfer case. This gives me a final ratio of 105:1 in low gear/low range. Other vehicles I own, are a 96 Ford F-250 with a 6" lift, posi rear end, 36" Hummer tires, 5 speed with a fuel injected 460 ci engine, an 87 Samurai with an 8" lift, Ford 9" rear end with a spool, Chevy Dana 44 front end with an electric locker, 5.88 gears, 16% reduction in high range and a 6.5:1 low range with 35" Baja Claws, and a stock 2003 Grand Cherokee Overland. Trails I have run are the Rubicon (10 times), Dusey Ershim, Fordyce Creek trail, McGrew trail, several trails in Moab, Utah along with local monthly runs.

Organizations
Lost Coast 4x4's Cal 4-Wheel Corva UFWDA Blue Ribbon Coalition

Education/Credentials
Certified off-road instructor - Certificates in engineering/electronics

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