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Questions tagged [awd]

Acronym for All Wheel Drive - Usually referring to vehicles which can apply power to all wheels, with power being transferred through a single speed transfer gear box. This differs from Four-Wheel Drive (4WD) where 4WD is usually selectable (selectable for either 2WD or 4WD), which usually has a high and low range gear selection.

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2017 Ford Taurus AWD PTU oil change, how to?

Ford says fluid in PTU will last the life time of the vehicle. I donor believe that be true because all fluids need to be changed at some point.
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Heat going cold when idling

I have a 2007 Ford Fusion awd v6, my heat is very hot when I’m driving but when I stop at a light or sit for a minute or so, it goes cold. I took it to the mechanic twice, I have got my warped cap ...
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Why rear wheels skid at slow, sharp turns when engine gets to operational temp?

This is followup on my BMW X3 E83 2008 transfer case saga. Here is recap: The dashboard had BMW triad of lights in dashboard. I replaced the nylon gear in transfer case actuator servo motor and ...
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2answers
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Why are shops that do tire shaving and truing so hard to find?

With the number of AWD cars on the road, you'd think that tire shaving and truing would be more popular. But I had to call the manufacturer of the truing machine and obtain a buyer's list to find ...
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2008 Saturn Vue tire replacement

I replaced the front tires last week - I could not afford to do all four. I have an appointment to replace the back ones on Thursday. This morning my ABS, traction control, and stability lights came ...
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28 views

2003 Forester A/T - If the center differential wet clutch system starts slipping, will the front, rear, or both axles lose power

My 2003 Subaru Forester with A/T has a wet-clutch center differential. If that clutch pack starts to slip excessively, will both axles lose power, or just the front or rear? In other words, is ...
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3answers
255 views

Subaru Outback 2014 was towed with front wheels raised and rear wheels on ground for about 5 miles. Now AT Oil Temp light flashes

Okay, I did it and now the flashing/blinking AT Oil Temp light is very concerning. Is that caused by such improper towing? If so, what would I expect to happen or to have fixed?
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123 views

All-Wheel Drive/ 4WD system

Time has come to clear things out... I would like to know the difference between a center differential and a transfer case. I know that a transfer case engages the front axle with the rear axle in 4H ...
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1answer
162 views

Torque converter failure - Related to replacing only 2 tires?

I've got a 2007 Honda CRV that I wish to continue to flog for a few more years at least. Yesterday I noticed that the 'D' light for drive on the dashboard was blinking. It stopped once I turned the ...
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1answer
1k views

Wheel noise while in reverse

12 Mini Countryman AWD. A metal on metal like grating noise developed in Right Front wheel only while in reverse, not braking and never forward. What could it be?
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1answer
20 views

AWD indicator bugs out, not sure if there's actually a problem or if the light is just malfunctioning

Feel free to re-word the title if there's a better way to state it, it sounds awkward but I'm not sure how else to summarize. 2004 Trailblazer with AWD - There's a dial on the dash that lets you ...
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BMW X5 E53 - Bord computer / AWD issues

Last week we bought a used car (BMW X5 E53 3.0L Diesel) from a private person. It looked fine and there seemed to be no major issue, only the regularly oil service was due. On our way home the 4x4 ...
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Only replace rear tires BMW xdrive?

I'm running a BMW X1 AWD Xdrive with OEM 19" wheel spec staggered: 255 / 35 / 19 Rear 225 / 40 / 19 Front Staggered tires height difference is -0.06" (approx 2/32", back tires have less height, I ...
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4answers
627 views

Where is extra fuel consumption in RWD and AWD cars dissipated?

I have understood that rear-wheel drive (RWD) and all-wheel drive (AWD) cars are less fuel efficient than front-wheel drive (FWD) cars, and that for this reason most cars sold today are FWD. I'm ...
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1answer
429 views

Subaru Outback - can spin one rear wheel with auto transmission in Park

So while I was changing brake pads on my 2003 Outback automatic (H6 3.0, if it makes any difference), I reattached the rear driver's wheel (the car is RHD, so the driver's side is the air intake/fuel ...
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2answers
1k views

New car AWD tire replacement

I have a 2016.5 Mazda CX5 AWD which have run 1900 miles till now. Right front tire got a nail puncture. The nail is at the corner of the tire. Tire replacement shop told as nail is at side tire cannot ...
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1answer
2k views

Can a rear end collision cause damage to the brakes?

My 2017 Subaru Outback was rear-ended a week back. I took it to two independent body works shop for damage estimates. Both shops were in agreement and said the following: The rear body panel needs ...
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2answers
2k views

Towing AWD Subaru 2010 Outback with auto/manual transmission

I read the posts about towing behind an RV. My 2010 Subaru Outback had an automatic transmission, but it also has the manual shift up and down paddles on the steering wheel. Does this mean it can be ...
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2007 Escalade - grease on front axle

07 Escalade 6.2L AWD I had the front RH wheel off and saw this: Is the grease from the wheel bearing, or the axle? Can this sort of thing be repacked, or should I replace the axle (and/or bearing)? ...
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10k views

What damage can one expect from towing an all wheel drive(awd) with 2 wheels down?

About a year ago, I had my awd car towed 12 miles with the front wheels on the lift, rear wheels on the ground while on neutral gear. The car's drive train is the front wheels. I just learned awd ...
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2answers
221 views

Must I put chains on all four tires of a vehicle with all-wheel drive (AWD)?

On a car with AWD like the Honda Element that automatically engages drive power on the rear wheels as needed when the front wheels slip, should I install chains (a) on the front wheels only or (b) on ...
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AWD systems with/without transfer cases

Is there a benefit to an AWD system without a transfer case? For example, the Audi Quattro AWD system appears to direct power to the front wheels directly from the transmission. Whereas the Jaguar ...
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1answer
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2007 Chrysler Pacifica AWD - Trying to diagnose vibration between 30-40mph, driveshaft or rear differential?

TL;DR - How can I isolate whether a vibration is being caused by a bad driveshaft or a problem with the rear differential? Apologies for the long story, but here goes... I recently acquired a 2007 ...
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7answers
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Hit a curb; chewed up rim and took a chunk out of tire. Will they need replacement?

Forced into a curb this morning while going about 35 mph...Just wondering what I'll be in for when I take it in later this afternoon. No air coming out as far as I can tell... Maybe 1/4-1/2 inch deep, ...
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2answers
181 views

My AWD car has a FWD option. Why/When would/should I use FWD?

First, it doesn't save fuel. "Auto" mode sends some power to the rear wheels a little, coming from a full stop, even if no slippage is detected, so it gives that nice "RWD push" feel. 2WD mode seems ...
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0answers
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Cracks on both front and back differential - Normal?

AUDI A4 2012 2TFSI QUATTRO - I took my car into a service centre for a check and was told both differentials have got have cracks. Car is still on motor plan, took it into Audi to be replaced and was ...
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1answer
4k views

Does 2WD mode save me gas over AWD(auto) mode?

My 2015 Nissan Pathfinder has a switch for 2WD, AWD (auto), and 4WD Lock. Do I save gas by keeping it in 2WD? Or it doesn't matter because it's still the same drivetrain and it simply doesn't apply ...
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1answer
586 views

Should I get a wheel alignment?

I recently just started to notice that my car is slightly pulling to the left right after I took my winter tires off. It's not much. If i let go it will go straight for a few meters before pulling. Is ...
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1answer
166 views

Does it save wear on AWD drivetrain to shift to Neutral before going into Park or Reverse?

I have an old Subaru with All Wheel Drive. I can feel in some circumstances the larger and more complex drivetrain "winding and unwinding" all those differentials and CV joints. It feels unpleasant, ...
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2answers
2k views

4x4 for sports cars (street use)

As some of you may know from this question i am currently rebuilding my car. The plan is to rebuild it from scratch. An important part is the engine. At the moment there is a 1.4l 8V petrol engine ...
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0answers
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All-wheel drive single tire placement [duplicate]

We have an all-wheel drive Subaru. A few months ago we had one tire blow on a set that was around a year old. We were told (by the tire store) we had to replace all of them. That sounded nuts but I ...
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3answers
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Why do pickups and large SUV's use 4x4 and generally not AWD?

In almost every case I can think of, the larger vehicles with four wheel power are 4x4, and the smaller ones AWD. As far as my experience goes, AWD is much more convenient, and also works at least as ...
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2answers
30k views

Transmission damage due to uneven tread wear on AWD vehicle

I have a 2013 Subaru Impreza with a continuously variable transmission with ~40k miles on it. About two months ago I blew out the front right tire and took it to a tire shop. The folks at the tire ...
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4answers
704 views

Why does the dual motor Tesla have more range?

In the page http://www.teslamotors.com/models if we scroll down we see the several flavors Tesla sells its Model S. It puzzles me why the 85 version has a shorter range than the 85D. The first can ...
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2answers
1k views

Should I check my rear toe after replacing a rear strut, and how?

I see a lot of information about how to check and adjust front toe at home using the string method, but it seems to rely on rear wheels that are properly aligned. I understand that the rear wheels on ...
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2answers
16k views

Which Honda cars are equipped with permanent AWD?

I am not looking for RT-AWD cars with automatic AWD which are usually FWD but permanent AWD cars.
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3answers
131k views

Must I Replace All 4 Tires on an All Wheel Drive (AWD) vehicle?

I have a 2005 Subaru Legacy 2.5i Wagon. I just destroyed the passenger-side rear tire. The tires have approx. 6/32" tread remaining, per an informal measurement with a coin (I used this guideline ...
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1answer
3k views

Most reliable used off-road with good fuel economy (for travelling expeditions) [closed]

What is the most reliable used off-road (awd/4wd/4x4) vehicle for occasional traveler expeditions to more remote areas of Eastern Europe, Russia, Middle East or Africa? Requirements: highest ...
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6answers
25k views

Damage to Audi differential with new front tires and old rear tires

I just bought two new front tires for my Audi A8 with Quattro all-wheel drive and was told I should replace the back tires as well. I can't afford those tires for a week or so. How long can I drive ...
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1answer
179 views

AWD truck doesn't shift smoothly. I was advised to not change the transmission fluid

AWD Mercury Mountaineer. 1997 Automatic transmission. 8 cylinder 5.0L 150k miles. fairly good shape. Pretty awesome truck. From 1st to 2nd gear, the transmission shifts with a light clunk. Also, at ...
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4answers
56k views

Is it OK to replace only 2 tires on an AWD car?

On a 2004 VW R32 (which uses a Haldex AWD system), I have one damaged summer tire. All the tires have at least half of their usable tread depth left. At $200 ea, I'd like to replace only a pair of ...
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3answers
5k views

How can I be sure my vehicle is a 4x4 / AWD?

I bought a pre-owned Volvo XC90 - 2007 3.2 V6 AWD. Or at least that's what it says on the car and the paperwork. Even in the dry, this car regularly spins the front wheels and there is fairly ...
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1answer
356 views

Is it my ABS sensors that are bad on a 95 Safari Van?

When I drive on snowy roads, the brakes lock up nicely. When I brake on dry roads, the van hops all over the place when I brake.. to the point I feel like the front end is going to fall off. Could ...
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9answers
71k views

Will different tread depths hurt my 4 wheel drive?

I have a Ford F150 4x4. The front 2 tires treads measure 12/32, one rear is 6/32 and the other is 10/32. The dealership told me I should replace the rear 2 tires because the big difference in tread ...