While out 4 wheeling the other day,i was descending a grade that i frequent often,my truck didnt want to gear down as usual.Electronic dial was in 4low,auto trans in low,hubs locked and trying to creep,it wanted to run,not walk.When i engaged the dash dial,seems to me i heard a "whistle",i am thinking maybe a vacumn line is compromised.Truck has 4.30's so it really creeps,as in no brake needed when descending a pretty steep hill.Any one ever had this problem? [img]/ubbthreads/images/graemlins/shrug.gif[/img]
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1997 F-250 Supercab shorty 4x4 with 1996 Cummins 5.9 12V,3GSK,#10 plate,5600 sixer with short shift kit,Dana 60 and 80,205 TC,and a few goodies under the hood,lifted/tires etc,etc.2002 Mustang G.T.Mineral gray.
I have heard the whistling that you speak of but I do not know what it is, also had a squealing that lasted about 3-4 days that finally went away. It has something to do with engaging the auto hubs on the 4x4 and the vacuum like you suggested. Sounds like something is sticking when engaging the hubs, sorry couldn't be of more help but someone will chime in here with a possible answer. [img]/ubbthreads/images/graemlins/confused.gif[/img]
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<font color="purple">2002 F-350 Crew Cab, Lariat, 4 x 4 Off Road, <font color="red">V-10</font>, A/T, 4:30's, Snow Plow Package X-Springs, Lighted Heated TT Mirrors, Reverse Sensor, Alarm-Remote Start, Husky Floor Mats, Silverstars, Garmin GPS V, Jack-It Lift, BFG 35's w/ 16 x 10 wheels, Rancho 9000X Shocks, TruSpeed, Berlin Bed Cover, Fireman LED lite bar..and a partridge in a pear tree</font>
I went under the truck today with my creeper,everything looked "normal" nothing obvious.You looked under yours spOOk? [img]/ubbthreads/images/graemlins/shrug.gif[/img] Does not make the "whistle" every time its engaged though.Sure like some help figuring it out. [img]/ubbthreads/images/graemlins/rolleyes.gif[/img]
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1997 F-250 Supercab shorty 4x4 with 1996 Cummins 5.9 12V,3GSK,#10 plate,5600 sixer with short shift kit,Dana 60 and 80,205 TC,and a few goodies under the hood,lifted/tires etc,etc.2002 Mustang G.T.Mineral gray.
I have been under the truck looking for possible signs of a problem but no luck. The whistling noise doesn't occur every time I engage the four wheel drive just on occasion. Just thought of something, the noise that I hear only occurs when I disengage the four wheel drive and put in normal 2 wheel drive mode.
By the way, are you sure that it actually went into 4 wheel drive? The reason I ask is because it sounds as though it didn't engage when you needed it too, these auto hub four wheel drive setups sometimes act hay wired.
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<font color="purple">2002 F-350 Crew Cab, Lariat, 4 x 4 Off Road, <font color="red">V-10</font>, A/T, 4:30's, Snow Plow Package X-Springs, Lighted Heated TT Mirrors, Reverse Sensor, Alarm-Remote Start, Husky Floor Mats, Silverstars, Garmin GPS V, Jack-It Lift, BFG 35's w/ 16 x 10 wheels, Rancho 9000X Shocks, TruSpeed, Berlin Bed Cover, Fireman LED lite bar..and a partridge in a pear tree</font>
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