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EMTSquad51
Dodge Dakota
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8/21/2005
22:27:16
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 Subject: Thumping sound upon Stopping
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Hi, I have a question. In my '00 dak QC w/45re tranny, every once in a while when I come to a rolling stop at a stop sign or stop light, I will hear a very low "thump" sound and feel a very slight jerk in the truck. Is this the tranny shifting into 1st gear? I also hear this a LOT in my wife's '99 Cherokee Sport. I'm used to driving stick shifts and not sure if this is just "normal" for an automatic. Thanks for any help/ideas!!
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00dak
Dodge Dakota
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8/22/2005
08:25:34
|  RE: Thumping sound upon Stopping
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fuel sloshing against baffles in gas tank
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EMTSquad51
Dodge Dakota
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8/22/2005
09:23:24
| RE: Thumping sound upon Stopping
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Seems a little bit hard for fuel to be sloshing around? I mean when it happens, I will have already been stopped for 30-60 seconds.
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Woodrow
Dodge Dakota
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8/22/2005
22:25:57
|  RE: Thumping sound upon Stopping
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The last time I looked at my gas tank when I replaced my pump I didn't see any baffles.
Did you just have your tranny serviced and if so you might have the wrong fluid in them and check your fluid.Most of the time the wrong fluid will cause problems with our transmissions.Remember ATF+3 or 4.Some people say you can put an additive in and use Dextron\mercon but I shy away from doing that.Just my 2 cents.Maybe some one else knows more..goodluck
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EMTSquad51
Dodge Dakota
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8/22/2005
23:59:35
| RE: Thumping sound upon Stopping
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Thanks Woodrow. I just purchased the truck about 3 weeks ago, so haven't had any service done to it. (checked all the fluid levels and conditions before I finalized the deal) I've only felt/heard this about 3 times in the truck (put almost 2500 miles on it already).
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GB2000
GenIII
8/23/2005
04:02:25
| RE: Thumping sound upon Stopping
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...doesn't sound normal to me...no clue what it could be though.
Josh Blackshire - Owner, Ohio Dakotas .NET
Red 98 Dakota Sport - Check it out!
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ExDakota
Dodge Dakota
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8/23/2005
10:01:16
| RE: Thumping sound upon Stopping
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I thought the fuel sloshing sounded a little wierd too, when I experienced this. I had a 5 speed manual. I started looking at my fuel guage when I experienced that and it happened only when the guage was in a certain range (I don't remember exactly what range).
Could find no problems that would cause that, so I could only conclude that sloshing fuel was the cause.
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redline
Dodge Dakota
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8/23/2005
11:24:45
| RE: Thumping sound upon Stopping
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I have noticed and feel a heavy thump or a clunk noise when I roll to a stop, or shortly thereafter. Since it will do it in or out of gear, I believe it is the rear-end. I suspect there is a high/low gear change in the rear end and it drops back into low at very low speed or zero MPH. I have not looked into this to see how the Dodge rear-end works, so it is just a theory at this point, but there isn't a whole lot of other things capable of making this noise. I also suspect this is normal.
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00Dak
Dodge Dakota
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8/23/2005
11:42:58
| RE: Thumping sound upon Stopping
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there is no 2-spd rear-end. I still think its the fuel sloshing in the tank and "popping" the sheet metal its made of... this amplifies the sound and it sounds like a clunk. my opinion
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Woodrow
Dodge Dakota
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8/23/2005
20:49:07
| RE: Thumping sound upon Stopping
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Well, First off the fuel tank is not made of sheet metal it is made of HDPE or in simple terms plastic. The skid plate or heat sheild is sheet metal. With the truck at a stop or rest for 30 to 60 seconds that kinda rules out the fuel sloshing around.Sorry guys I have to disagree with you on that.
Your trans might need to be adjusted or even repaired. Might be something like a lockup soleniod that is bad. Did you do a search on this and other dakota sites about this?
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Woodrow
Dodge Dakota
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8/23/2005
20:58:24
| RE: Thumping sound upon Stopping
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I just found another post with the same problems you are having.It was 2004. They were talking about the lockup soleniod being bad.I just did a general search and put in jerks at stop light.As funny as it sounds it pulled up some good reading..Goodluck and let us know what you find out...
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Jecht
Dodge Dakota
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8/23/2005
21:14:35
| RE: Thumping sound upon Stopping
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I had that same prob on my 03 dak. took it to the dealership 3 times. now it went away after the third time. they said they did nothing to and couldnt duplicate/ it but they had to as it did it when I got the truck a year ago.
as far as the fuel sloshing around. no I always have a full tank in my truck and it still did it. now if I can get that surging fixed that happends when I let off the brakes I will be happy with my truck ;-)
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Ken
Dodge Dakota
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8/27/2005
01:13:17
|  RE: Thumping sound upon Stopping
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Not a professional at this but... try this, have somebody stand at a stopsign, and drive up like normal, and see what they hear...Just a thougt. Good Luck:)
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01Motorsport
Dodge Dakota
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8/28/2005
17:53:39
| RE: Thumping sound upon Stopping
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My '01 RC will give the "clunk" with about 3/4 full fuel tank. It is strong enough that it feels like another vehicle nudged your rear bumper. Shortage of baffles in the tank is the culprit.
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jndred
Dodge Dakota
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3/12/2008
18:53:50
| RE: Thumping sound upon Stopping
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i have an 03 dakota noticed the same problem. i took it in to a local mechanic and he put it on a lift spun the back wheel and stopped it abruptly and the whole rear end and drive shaft jerked.but he didnt know if it was normal or not.i'll look into it and post when i find out
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choochoo
Dodge Dakota
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3/15/2008
20:59:19
| RE: Thumping sound upon Stopping
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The thump is when you hit a dog.
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jndred
Dodge Dakota
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3/16/2008
12:41:48
| RE: Thumping sound upon Stopping
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thanks i'll keep a closer watch on the road
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