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Olindo
Dodge Dakota
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5/11/2007
10:20:55
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 Subject: Rear Speed Sensor
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Message:
A while back I posted about the following problems: ABS light "on", Brake light "on", speedo not working under 30mph. Someone from this forum mentioned the rear speed sensor (mounted on top of rear differentisl) as the likely culprit. I got under the truck and it seems to be an easy enough job for me to tackle. Does anyone know the p/n of the rear speed sensor...and what is the process of replacing out the old one? Thanks
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louie
Dodge Dakota
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5/11/2007
11:17:24
|  RE: Rear Speed Sensor
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i had that problem on my 89 if you go to a dealer they can tell you the part number then go to o riely's on mine though it was the abs valve on the driver side frame rail that was the problem after i put in the sensor so you best bet is to have the shop run a test on it first cuz i spent 500$ trying to fix it
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mddak
Dodge Dakota
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5/11/2007
12:18:38
|  RE: Rear Speed Sensor
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i posted this a while back and now i save it - gets asked every month
mddak
7/08/2004
17:06:33
RE: ABS and BRAKE light on -- everyone with the abs and brake light on, and some with no low range speedo as well has changed their rear abs speed sensor. the one in the rear diff
Message:
just did rear abs sensor - problem solved, some hints for a 99 dak
- day before spray nut with wd40 or liquid wrench
- drive rear wheels up ramps (or steep driveway, helps keep diff fluid from leaking out, also chock wheels!)
- disconnect neg battery teminal
- top nut 13 MM use box wrench
- bottom nut 14 MM use box wrench
- press connector with thumb and pull connector off sensor
- wiggle sensor up, put screw driver under lip and wiggle to raise (carefully)
- dip finger in hole and put diff oil on new O ring on sensor
- push sensor in and bolt up (also, use dielectric grease for the wire connector)
- put ignition key in and turn to on position for 30 seconds
- reconnect battery
you're done
_______________________________________________
Note: Check the wrench sizes, I've seen that some people use 1/2" and 9/16" (which are close to 13mm and 14mm). Not sure if the nuts are metric or not.
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Olindo
Dodge Dakota
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5/11/2007
23:14:52
| RE: Rear Speed Sensor
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Message:
Thanks MDDAK....that is really helpful!
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Roberto Dak99
Dodge Dakota
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1/28/2008
22:50:55
| RE: Rear Speed Sensor
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Message:
I got the same problem on my 99 dakota like 6 months ago. My ABS and my BRAKE light came on. So I went on line and I found this forum and it was posted on 2003. I want to say thank you so much to all who make this posible and all the dakota owners It help me alot!... saving me like $150.00 bucks
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Olindo
Dodge Dakota
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1/31/2008
19:18:53
| RE: Rear Speed Sensor
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Message:
Yup...this forum is filled with alot of expert folks who know the dak. I bought the part for like 30 bucks and it took no more than 20 minutes to swap out. If I had taken it to a shop I bet they'da charged me 200 bucks or so...plus that friggin 30 or so bucks for "shop supplies"...what gives with that? Anyway, problemo solved. BIG thanks to all who help out in this forum.
Olindo.
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tlawson4021
Dodge Dakota
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2/01/2008
20:46:49
| RE: Rear Speed Sensor
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Message:
my 99 dakota has all the same problems...ABS light on, check engine and BRAKE light on along with the speedometer not working at all...also the automatic transmission is hesitating to shift gears, it stays in first gear up to around 3500 RPM if I let off the throttle and let it coast awhile it will shift. can anyone tell me what will solve these problems??
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Olindo
Dodge Dakota
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2/01/2008
23:11:51
| RE: Rear Speed Sensor
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Message:
The ABS and Brake light coupled with the speedo inoperable are the same symptoms I had. I replaced the rear speed sensor and problem gone. Now I'm no expert, but the check engine light and shifting problem sounds similar to a problem I had a year and a half ago...it turned out to be the output speed sensor that's mounted on the side of the trani case. Can anyone confirm this?
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