Tag: driveshaft

By on January 12, 2018

2008 Chrysler Pacifica Limited AWD, Image: cargurus.com

Stefan writes:

Sajeev,

We just had the drive shaft replaced on my wife’s 2008 Chrysler Pacifica AWD (no, not the new minivan — the old crossover). It’s been a good and reliable car in spite of its less than sterling reputation, and we have a little over 100,000 miles on it. The 4.0-liter engine with the six-speed transaxle delivers plenty of pickup and all was well until the (center) driveshaft went bad and we had it replaced by our trusty independent auto repair shop.

The problem lies with the new drive shaft, which shudders at low speed when you accelerate and moans between 40-50 mph. The shop can’t figure out what it can be and what to do.

So, what’s your take on the situation? Can you and the B&B provide some insight in this matter? The vehicle is well cared for otherwise and in excellent condition. I am inclined to keep on driving, since you don’t get much for them as a trade-in — but maybe it’s time to think of a replacement? What says you?

(Read More…)

By on March 21, 2017

 

diagnosis

Doug writes:

I have a 2007 Mercedes-Benz S550. I accidentally bought it in 2014 off eBay (long story) for about trade-in ($13,000), with 150,000 miles on the odomater. In a twist of good luck, it turned out to be a one owner car and using CarFax I was able to see and verify that it had been maintained by the selling dealer right up to a few weeks before its eBay appearance. A call to the dealer confirmed the complete service history. Even the brake pads and rotors were new, and it had a newish and very expensive set of Michelins. Almost three years later, it has been very reliable for my teen daughter and has 180,000 miles. It had a few quirks I have fixed myself (clogged charcoal canister, minor trunk leak caused by a missing rubber plug, sticking power driver seat) and only one real repair (dead stereo amp rebuilt by Becker).

Now that my daughter is off at college and content with a ZipCar, I am driving it and intend to keep doing so. I have noticed a vibration in the center console area of all places, while driving around town. You feel it through your arm resting on the console lid. It’s a deep vibration, if that makes sense — coming from under the car.

You don’t feel it in the seat, nor do you feel it in the steering wheel. You do not feel it at a standstill, just at 20-30 mph. It goes away at higher speeds, and the car is rock solid and smooth as glass at 75 mph. I am stumped as to the cause, and with the age of the car, I don’t want to set a dealership or even an indy shop loose on it without more of an idea of the cause. I was thinking maybe a motor mount, but it seems like I would feel that all the time, and especially at idle, which I don’t. I was wondering about maybe some kind of driveshaft or transmission mount or connection point, but it seems like a fault that would get worse with increasing speed instead of going away. Do you have any ideas?

(Read More…)

By on January 19, 2016

 

2007 Nissan Frontier. Image: Nissan

TTAC commentator suburbanokie writes:

Greetings,

Another longtime listener, firsttime caller … I have a two-parter.

First: My 2007 Nissan Frontier will soon be due for a rear brake job. I’ve never worked on rear disks. Should I replace the emergency-brake shoes as well as the service brake pads, or will a simple inspection of them do for now? Also, I’ve had varying advice here: should I have the rotors turned, replaced or simply let them be if no pitting or warping is detected?

Second: Last year, my father and I replaced the U-joints on the prop shaft and since that day there’s a vibration around 55-60 mph. Whether I’m in 4th, 5th or 6th gear is irrelevant and the vibration goes away above and below that range. I do remember when trying to remove the old U-joints, my father took a small chunk, maybe a half-inch square area, out of the shaft right at one of the ends, and I’m pretty sure this is causing it, but is there anything I can do about it? (Read More…)

By on November 3, 2014

u joint. Shutterstock user Tossapol

Mark writes:

Sajeev–

Here’s a weird one to test your skills of remote diagnosis. Fire up your Magic 8 Ball for this one.

Car: 2012 Mustang V6, manual gearbox, performance package (currently running some crappy General AS Max-03 tires), 33,000 miles. I’m the only owner; special ordered to get it just the way I want. Mods limited to a Shaftmasters one piece drive shaft (scared into it by a few YouTube videos), a Draw-Tite receiver hitch to pull my one bike motorcycle trailer, and an 87 octane tune uploaded via SCT (on your recommendation). The car will go into a nearby Ford dealer for a look at this issue under warranty this coming Friday, but based on the “quality” of some of the work I’ve had done over the years, I thought it would help to give the techs some clues.

Problem: For the past few days, I’ve heard irregular “bangs” or “clunks” from under the car. (Read More…)

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