kawaboy13 Posted January 31, 2011 Share Posted January 31, 2011 Well i have a couple questions. First, I have the locked over CAD. I was wondering if it's alright for me to drive it in 4x4 Hi about ten miles from my house to school. Will it hurt anything? Speeds up to 70? Also, I have a noise with every setting except vent and heat in my truck. I think that it's my fan up front. Defrost and bi-level and a/c are the ones. What should I try on this fan? Thanks Link to comment Share on other sites More sharing options...
dasbulliwagen Posted February 1, 2011 Share Posted February 1, 2011 Theres NO way you should drive your truck in 4x4 hi on dry pavement.... youre gonna end up getting it bound and break something! Only drive it like that if the pavement you have is slippery or loose or slick. That way it allows your 4x4 system to unbind when it needs to due to minor differences in tire size, and due to differences in distance travelled by each tire from corners and lane changes. If you only have hard dry pavement, then the binding can't releive itself, and you could break something, especially at highway speeds! It only makes sense. Keep the 2wd on dry pavement. Link to comment Share on other sites More sharing options...
dasbulliwagen Posted February 1, 2011 Share Posted February 1, 2011 And the noise in your vents could be due to debris in there or a mouse house, or a flapping vent door seal in a particular mode.... fairly common in our old trucks. The only way to fix it would to take it apart and clean it, and redo the seals, and that involves dash removal. Link to comment Share on other sites More sharing options...
kawaboy13 Posted February 1, 2011 Author Share Posted February 1, 2011 I'm sorry I din't clarify. I mean in heavy rains and wet roads. Would it be alright for more traction? I've heard of it done with newer vehicles so I wan't sure. I just know my tires get a little bit slippery because of wet traction. And the noise from the fan is like a loug rolling growl. Is there anything I could do to help it? Thanks Link to comment Share on other sites More sharing options...
Pete M Posted February 1, 2011 Share Posted February 1, 2011 yes, wet roads are ok for 4wd. You can shift in and out as you please, so just shift smartly. :thumbsup: Â permanently locking the CAD doesn't affect anything you can or can't do with 4wd. Â you might want to get some better tires. :D Link to comment Share on other sites More sharing options...
kawaboy13 Posted February 1, 2011 Author Share Posted February 1, 2011 Well I'm on all terrains, but the road quality sucks so i tend to have the rear slide at times. So is it still alright to shift on the fly? I just don't want to wear it any. But sometimes i feel like I need 4wd because it rains so hard and water can't drain fast enough. Link to comment Share on other sites More sharing options...
deziped Posted February 1, 2011 Share Posted February 1, 2011 I don't think it a good idea to use 4X4 on pavement unless its got ice or snow on it, or when you can maintain your vehicle in a full state of hydro-planing on water. . Now if you have full time 4X4 thats a diferent barrel of apples as it has a built in differentiation capability built into the trf case gearing to alleviate binding buildup... Link to comment Share on other sites More sharing options...
Pete M Posted February 1, 2011 Share Posted February 1, 2011 your truck has shift-on-the-fly capability. :thumbsup: it's in your owners manual if you're blessed to still have one. Â if your tires are slipping because of the rain, then they will certainly be able to slip and balance out the tension in the t-case. Â dry pavement is to be avoided. but even then, there are owners out there that have done it and been fine. it's all about risk. the longer you drive in 4wd on dry pavement, the greater the chance of something going wrong. Link to comment Share on other sites More sharing options...
cody4359 Posted February 1, 2011 Share Posted February 1, 2011 if its raining so hard that you losing traction maybe slow down?? 70 mph and having the back end walk out doesnt give you much time to throw it in 4hi and correct the steering. I'm NOT ALL about about saftey but that would make more sense then hoping you react quick enough before losing control. or get some pro comp extreme contact mud terrains. deep lugs never let me hydroplane, and the rubber compound was so sticky that spinning a tire was fairly difficult and didnt last long cause theyd grip and send me flyin. Link to comment Share on other sites More sharing options...
mjeff87 Posted February 1, 2011 Share Posted February 1, 2011 if you are going 70 mph, you do not need to be in 4WD. Â Slow down and/or get better tires. Link to comment Share on other sites More sharing options...
Eagle Posted February 1, 2011 Share Posted February 1, 2011 I'm sorry I din't clarify. I mean in heavy rains and wet roads. Would it be alright for more traction? I've heard of it done with newer vehicles so I wan't sure. I just know my tires get a little bit slippery because of wet traction. And the noise from the fan is like a loug rolling growl. Is there anything I could do to help it? Thanks Newer vehicles can do this because they have a viscous coupling or a mechanical differential in the transfer case -- like the Jeep NVG 242 transfer case (SelecTrac) used on some up-scale Cherokees, and the 6-cylinder Grand Cherokees. The NVG231 t-case used in the MJ and base model XJs does not have any differential in it, so the front and rear drive shafts are always locked in 4WD and MUST spin at the same speed. Â You can use 4WD-Hi on roads that are VERY wet and slippery, but don't use it unless you know for certain that the tires can slip a little. Every time you go around a corner the front wheels travel a little farther than the rear wheels. Since the axles are locked together, that results in stress and if the tires can't slip to release it -- something's going to break. Â The best answer is to not use 4WD on pavement at all, but it's your truck. Â And I agree with others -- if it's slippery enough to be using 4WD, you should not be going anywhere near 70 MPH. It's that kind of thinking that explains why I see so many Explorers in ditches every time we get a heavy rain or a light snow. Link to comment Share on other sites More sharing options...
ParadiseMJ Posted February 1, 2011 Share Posted February 1, 2011 if its raining so hard that you losing traction maybe slow down  I've got to agree with this. Most accidents are caused by excessive speed and people who don't understand why they can't drive 70 in a snowstorm, with or without 4 wheel drive.  You also may want to try getting better tires for the type of driving you do. No car should be slippin' and slidin' at 70 mph unless you're just driving balls out careless. Link to comment Share on other sites More sharing options...
kawaboy13 Posted February 1, 2011 Author Share Posted February 1, 2011 I definitely don't top 55 in heavy rain. I'm getting slip off of stops and red lights and sometimes in second gear. Thanks for the opinions. Link to comment Share on other sites More sharing options...
tbrand Posted February 1, 2011 Share Posted February 1, 2011 I definitely don't top 55 in heavy rain. I'm getting slip off of stops and red lights and sometimes in second gear. Thanks for the opinions. Â That's just a heavy right foot. I got wheelspin through third gear and a chirp in fourth one rainy day when I was driving angry. Link to comment Share on other sites More sharing options...
cody4359 Posted February 2, 2011 Share Posted February 2, 2011 :agree: ease up on the accelaration or get tires with a softer rubber compund Link to comment Share on other sites More sharing options...
veritas4156 Posted February 2, 2011 Share Posted February 2, 2011 I have the same problem. I think it may have been caused by my father driving me around for years faster than humanly possible in his little VW rabbit through NYC. ~200 lbs. of weight in the back of the truck helped stop the rear slide, then I dropped it down by a 40 lb. bag of sand over time and learned to really slide the truck nice. Now I'm sideways. All day. Link to comment Share on other sites More sharing options...
Eagle Posted February 2, 2011 Share Posted February 2, 2011 ... Now I'm sideways. All day. Are you bragging or complaining? Link to comment Share on other sites More sharing options...
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