Last post on Dec 09, 2013 at 7:39 PM
You are in the Acura MDX
What is this discussion about?
Acura MDX, SUV
Go to NHTSA to file a safety complaint.
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#1925 of 2052 Re: 2009 Acura MDX Tech pckg [67truy]
Oct 20, 2010 (7:33 pm)
Same! grinding right after speed bump... tried with brake, tried w/ gas, tried neutral - all the same. Have had my 07 T&E 48k into the shop more times than I'd like since Nov06 purchase. Had technician drive it over bumps, but he couldn't recreate. Put 4 new tires on balance, alignment ... one month later shuddering, gears seem off, smells funny ... they are replacing my torque converter and hopefully, full transmission. I've also had trouble with one of the doors unlocking, the battery dying very quickly when engine is off / radio on, and the back seat getting "stuck" in the down position. Bought Acura for its reliability, but definitely questioning my purchase.
#1926 of 2052 Re: Bad battery [wwest]
Oct 20, 2010 (8:49 pm)
ok... just got my car back 2 days ago after dealer replaced front left struct with them indicating internal struct damage. Took the car for a drive and indeed drives like new with new struct over bumps. But sadly the darn clicking sound still lurks when turning But not as loud as before. Will need to put the car back to the dealer for Another Check. my 07 have 37K+ on it.... warranty almost run out.
What would pulling fuse(s) off for SH-AWD do?
I'm like thinking could there be something lose around the axles when turning something is in the way or rubbing against it causing the stupid clicking sound?
#1927 of 2052 Re: Bad battery [tunlo]
Oct 21, 2010 (1:07 pm)
What would pulling the SH-AWD system fuse do..??
Lower the stress on the drive train, the ENTIRE drive train. When your SH-AWD system pre-emptively engages the rear drive on a tractive surface that often results in a rather serious level of driveline windup and/or tire scrubbing, most especailly so in a low speed turn, tight turn or accelerating turn even moreso.
IMMHO what is most needed for the SH-AWD system, or ANY pre-emptive F/awd system, is the ability of the driver to enable (not "engage") it ONLY in known or suspected low traction conditions. It could also be made reactive, activating ONLY with actual wheelspin/slip and the following 2-3 minutes, in order to cover instances of which the driver might not be aware in advance.
#1928 of 2052 Re: Bad battery [tunlo]
Oct 21, 2010 (1:10 pm)
"..darn clicking sound.."
We're not, I hope, talking about the clicking sound at/within the stearing wheel resulting from the turn signal cancel mechanism.?
"Replaced the left front strut.."
#1929 of 2052 Re: Bad battery [tunlo]
Oct 21, 2010 (1:35 pm)
"..it is most noticeable on a stop and make turn gradually..."
Low speed acceleration, and/or acceleration into a turn, will ALWAYS result in the SH-AWD system engaging, PRE-EMPTIVELY engaging, the rear drive. That, in turn, should the tire contact surface be reasonably tractive, will end up putting a LOT of undue stress on the ENTIRE drive train.
So your clicking noise could be coming from any point in that STRESSED drive train.
Your SH-AWD system is, at base, a simple FWD system. Therefore since loss of traction on the front wheels is such a HUGE threat to safety the TC system is tuned to be HYPER-ACTIVE, absolute INSTANT activation at even the slighest hind or indication of a loss of traction event.
Are you by any chance in the habit of even moderately accelerating into, out of, a turn..?
Accelerating into a turn, a tight turn especially, on a low traction, WET, surface might result in a period of brief wheelspin/slip, thereby activating TC, Traction Control, engine dethrottling and the "clicking" from pulsating front brake application.
Wheelspin/slip very often occurs in that situation and that brings TC into play if no braking is involved.
"over bumps while (lightly) braking"
Brief wheelspin/slip often results from loss of traction due to tire rebound and that results in brief, one "click" ABS activation.
#1930 of 2052 Re: Bad battery [wwest]
Oct 21, 2010 (7:28 pm)
thanx for the info wwest. Being not a car fanatic so much so not a drive train expert your explanation do sound on par with your reasoning. At a stop prep for a turn I usually take off(not gradually) into the turn unless there's obstruction. It is on a gradual acceleration into a turn the click sound appears. Might be what you explained FWD losses traction and RWD kicks in putting stress on the ENTIRE drive train.
If my front wheel losses traction and my car is 4 yrs old, tires may be thinning out on the thread. Can replacing tires solve the problem? or could it be sth with the drive train itself?
when I parallel parked into a space and adjust the car more to the curb by turn left and right, on reverse i would hear clicks too. Does that also mean stress is transferred to the drive training causing TC system to come on in turn activating the ABS?
I didn't get a chance to really pull out the SH-AWD fuses to see click sound disappear. I will try it this weekend and will post my findings afterward.
If clicking sound would be appeared normal (ABS activation) from stresses on drive train what can be done to cure it? There wasn't any clicking ever since I purchased the car until the last 6-months or so.
#1931 of 2052 Re: Bad battery [wwest]
Oct 21, 2010 (7:30 pm)
well... sometimes i turn without turning on turn signal and clicking still comes on.
#1932 of 2052 Re: 2009 Acura MDX Tech pckg [usedtoluvmymdx]
Oct 21, 2010 (7:31 pm)
Get a Gel Battery... that will SOLVE your BATTERY DYING Problem!
#1933 of 2052 Re: Bad battery [wwest]
Nov 16, 2010 (3:54 pm)
Finally.... Clicking grinding noise fixed. Took my car to the shop for all the fingers I can count. Dealer have changed both rear structs, front left struct, cv joints... All the didn't fix my problems until recent they found internal damage on my front left axle. After the replacement the damn sound is gone and the car drives much better. Took at least two months to find the culprit of my problem. Like I said before I'm glad they replaced most of my structs before my warranty runs out in 2000 miles.
#1934 of 2052 Nitto nt420S tire 255/55/18 on 08 MDX, any suggestion
Jan 05, 2011 (6:30 pm)
The stock Michelin latitude on 08 MDX need to be replaced.
I got multiple quotes all in the rnage of ~$1240.
I read some good reviews about nitto nt420S tires including one MDX owner.
Got discount tire to match the price quoted by onlinetires.com, ~$600 out the door (no tire protection warranty).
Given nitto's are almost 50% of Michelin was wondering if anyone else has tried the tires out and what the experience was.
Really leaning towards trying them out though any feedback would be great.