Question about 2007 Chrysler Pacifica Touring
HELP! there is a loud fog horn sound that randomly sounds from the right front side of the car. It happens randomly and actually sounds something like a horn but it is not the horn and it seems to come from the right side of the car--sounds like from the wheel. I don't recall it happening if the car is turned off, but it happens when the car is on and in no particular stage or position---driving, idling, braking, or turning it just seems to happen randomly.
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Posted on Jan 02, 2017
SOURCE: Front knocking when braking
Hello and Hope this helps you and anyone else experiencing this... My Wife and I have a 2005 Pac Trng and ever since we got the vehicle we had been hearing an increasingly loud "thump" on acceleration or over bumpy roads, and a loud "thunk" when initially applying the brake, also, from a high speed slow down, the car would shake in the front end. After 3 service stops at different dealers in the area (all of whom said they could not tell what it was or did not hear anything even when it was audibly noticeable, to "we think it might be the struts" explanation), I decided to do some googling on my own and found an obscure post about a little known issue with the "Lower Front Control Arms". There is a TSB (Technical Service Bulletin on this item as well - Chrysler Pacifica 2004-2005, Service Bulletin #: 0200704 and NHTSA #: 10010533). It seems that even the Chrysler Service Technicians are unaware of this issue which shocks me - Aren't they they ones who should be telling me what it is???!!! We scheduled a service check at the same dealer who didn't hear anything the first time, asked for the manager to take a test drive with me so he could hear what I was hearing, let him drive it on his own, and insisted that he look up the TSB. Since it was covered under warranty, I asked him to "please replace the item we are referring to" - I mean what else do we have to lose? They reluctantly took the car in and the manager called me the next day to tell me that I was exactly right! The Rear Lower Control Arm Bushing was extremely bad. We also had the Front and Rear Motor Mounts replaced to elimante a secondary knocking issue we experienced while accelerating. The overall effect was a much smoother (and Quieter!) take off and stop, with no popping, creaking, or "loose parts" sounds coming from the front end at all! If you are experiencing the "Thumping" or "Knocking" noises during braking or acceleration, or a slow speed "Rumble" (between 5 and 15 mph) in the front end when going over uneven ground or potholes, then you may want to have your dealership or mechanic take a look at these two items (Lower Control Arm Bushings and Motor Mounts). It has nothing to do with Brakes or Struts - unless you have a really crappy mechanic who just tinkered around with those items recently.
Hope this helps. - Gary, Los Angeles, CA
Posted on Dec 28, 2008
If it sounds more like it's coming from rear of engine, that could be a possibility, and should be followed up,but if it's coming from front of vehicle area, I'd concentrate on your accessory drive belt . If it hasn't been changed in quite a while especially. That belt is routed around about 8 different pulleys,in,out,over,under, and it would lead me to believe it would be a good candidate for wear & noise that would increase as it wears more. I wouldn't try belt dressing as I'm not a lover of that stuff, only for emergencies. It may be as simple as spraying water on it to see if the noise changes or disappears, just keep your eyes back if engines running. They make what they call an audioscope, basically a set of headphones wired to an amplified probe, so it's easier to isolate the noise, perhaps a local garage has one, and can pinpoint it for you. Years back mechanics would use a long screwdriver or pipe up to their ear and poke around, but that's very dangerous, so I wouldn't recommend that. Your engine does have a timing belt too, and engines in the past have been known to produce that sound you describe from wear on it too. I'd go after that one as a last resort unless manual recommends it at certain interval.
Posted on Feb 02, 2009
well could be a dried out lower ball joint or just the upper strutsare dried out and need some oil sprayed on them to soften up the rubbers .but I would say it is more likely to be the lower ball joint needs replacing
Posted on Feb 21, 2009
Hello, the answer to solve this problem is to take it to your nearest chrysler dealer and have them re-flash the updates to the ecu....since 2004, chrysler has had about 4-5 new updates since the date they were manufactured....you need to have the update that followed from your date of man. on your vehicle....They attempted to flash mine to the latest update and didnt work, turns out that they need the re-flash from back when...in order to get the gauage to stop fluctuating.....Hope this helps!!
Posted on Sep 21, 2009
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