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JimB
GenIII
7/20/2002
19:07:06
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 Subject: What the ........uck???
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“Check Engine” light glows wild today – 1999 5.9. What the…??? 79K, oil, tranny fluid, all the basics – ok. Runs great. We talking a dumb “oxygen sensor” here? Any and all inputs appreciated. – Jim.
99 SY 3.9 Dakota Sport
99 PB 5.9 Durango SLT
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Dak318
Dodge Dakota
JOIN HERE
7/20/2002
22:26:58
|  RE: What the ........uck???
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MY check engine light comes on if I blow a fuse.
91 Sport 318
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DakotaDan
*GenIII*
7/20/2002
22:33:56
|  RE: What the ........uck???
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I believe it's the 98+'s you can pull the codes from the PCM by doing the following:
Put the Key in the ignition
Turn the key to the "Run" position
Move back to the "On" Position
Turn the key to the "Run position
Move back to the "On" position
Turn the key to the "Run position
Move back to the "On" position
The codes will appear in the odometer, flashing the codes, one by one, and then it will flash "P DONE" when you've reached the end of the codes.
Dan
K&N FIPK # 57-1517 * DynoMax #17748
OEM 5.2/5.9 V8 TB #53032691AA * Crower 1.7 Roller Rockers # 73654K
Factory Flares * WeatherTechs * Saddleman Low Profile Tonneau
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JimB
GenIII
7/21/2002
13:54:03
|  RE: What the ........uck???
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Checked all the fuses. All ok.
The three-turn-get-the-code trick doesn't work with the 99's -- you have to bring it into the dealer for the $66 "analysis" reaming.
I did, however, today change the oil, PCV valve, distributor, rotor and replaced the plugs with platinum ones. CHECK ENGINE light still on, however, it runs great! Coolant ok, all hoses seem to be where they're supposed to be.
I still think it's gotta be a sensor somewhere. - Jim
99 SY 3.9 Dakota Sport
99 PB 5.9 Durango SLT
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JM
Dodge Dakota
JOIN HERE
7/21/2002
18:09:17
| RE: What the ........uck???
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Its probably your gas cap sensor. Your gas cap might be loose or not holding enough pressure. My check engine light came on for that and the dealer just reset the pcm. They didn't charge me for it. Pretty stupid though.
Just my 2 cents.
Josh
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John S.
Dodge Dakota
JOIN HERE
7/21/2002
18:47:17
| RE: What the ........uck???
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Find a local AutoZone- they will check the codes for you for free! I had a check engine light come on a lot, they plugged their computer into my truck and told me a bad o2 sensor.
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JimB
GenIII
7/22/2002
07:08:08
| RE: What the ........uck???
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John - thanks man. I will do that.
Also, gas cap ok.
I was looking through the Haynes manual last night -- this thing has about 1,000,000 sensors, any of which will cause that CHECK ENGINE light to pop on. Again, thanks all, I'll have it checked out. - Jim
99 SY 3.9 Dakota Sport
99 PB 5.9 Durango SLT
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Dak318
Dodge Dakota
JOIN HERE
7/22/2002
14:59:21
| RE: What the ........uck???
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Take it to autozone, they have free computer diagnostics tests.
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JimB
GenIII
7/22/2002
19:09:47
|  RE: What the ........uck???
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OK – here’s the results of the AutoZone FREE PCM code check. I’d like to say I was in and out of this place in roughly 3 minutes – a considerable PLUS compared to the dealer who’d like you to leave it overnight, charge you and arm and a leg, etc.
The code that popped up was – P0720, “Output Speed Sensor Circuit Malfunction.”
About 2 months ago, I had the speed sensor replaced after the ABS/BRAKE light illuminated. This one is in the rear diff. This particular sensor is located on the tranny, but I don’t have a clue where – does anyone?
I have the part - $26.49 from the “dealer.” Looks like a quick and easy fix. Screws out/in. Anyone knowing the location of this sensor would greatly appreciate it. Thanks in advance – Jim B.
99 SY 3.9 Dakota Sport
99 PB 5.9 Durango SLT
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JimB
GenIII
7/23/2002
11:20:09
| RE: What the ........uck???
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No one knows the location of this thing? Surely, I am not the first one to have this thing go bad. Any/all input appreciated. Thanks Jim
99 SY 3.9 Dakota Sport
99 PB 5.9 Durango SLT
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4wDakota
GenIII
7/23/2002
11:25:56
| RE: What the ........uck???
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If i remember right it bolts into the top of the diff. Get a FSM or Haynes manual it'll tell you for sure.
98 CC 4x4, 5.2 Auto 3.55LSD
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nuckenfuts
Dodge Dakota
JOIN HERE
7/23/2002
11:49:40
| RE: What the ........uck???
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Nope it's on the trany. psngr. side alost on top, you'll see the wire just follow it to the sensor.
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JimB
GenIII
7/23/2002
12:41:10
| RE: What the ........uck???
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4WDakota -- the one on the rear diff is the one I had changed recently. This one -- the one "nuckenfuts" is referring to -- is the one that needs fixing. Question for you Nuckenfuts -- is this thing hard to reach. I have to stick a wrench in there to get the old one out, new one in. - Jim
99 SY 3.9 Dakota Sport
99 PB 5.9 Durango SLT
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nuckenfuts
Dodge Dakota
JOIN HERE
7/23/2002
13:24:44
| RE: What the ........uck???
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Havn't had to change mine yet, I've just been under there and seen it. Don't think it's too hard to remove/replace you can see it pretty-good,and usually if u can see it you can unplug and turn a wrech on it.
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4wDakota
GenIII
7/23/2002
14:20:06
| RE: What the ........uck???
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You may want to give a shout to IntenseDak39 Greg had that problem. If you search the V6 board for "transmission fix" or something like that I remeber he changed the one at the rear of the tranny and he said something about just having to clean metal shavings off of it. Like I said, it was a post that he started to explain the problems a lot of guys were having. Or you can just email him.
Corey
98 CC 4x4, 5.2 Auto 3.55LSD
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JimB
GenIII
7/24/2002
07:11:38
| RE: What the ........uck???
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Sensor replaced last night -- located -- repaired, no problem. Total cost - $26.49. This forum is awesome. Thanks all for the input. The Auto Zone tip was the key here. Again, thanks - Jim
99 SY 3.9 Dakota Sport
99 PB 5.9 Durango SLT
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Dak318
Dodge Dakota
JOIN HERE
7/24/2002
16:42:55
| RE: What the ........uck???
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Yeah, I came up with that because one of my buddies used to be a manager at autozone. He also used to get me discounts on stuff.
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Jeff G
Dodge Dakota
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8/09/2004
23:23:22
| RE: What the ........uck???
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Is the sensor at the same location on a '99 5.9 Durango (4X4)? I can barely see the top of the tranny on the passenger side, let alone see a sensor. I have a Chilton's for the truck, but the only reference I see to a output speed sensor is in the codes, but I don't see any reference in the tranny section. Thanks for any help...
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peedee
Dodge Dakota
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8/10/2004
06:00:19
| RE: What the ........uck???
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maybe someone can figure a way to get the "auto Zone will check codes" post to come-up as a priority whenever somene does a search. You did do a search first right? LOL. I have posted that reference a few times and others have too. It is a common question here and I am sure it will be in the future. Of course I know that performing a "code" or "check engine light" search would give mucho results, so take my sarcasm as a joke, because that is all it was. But the priority post thing would be good for the future. Heck, maybe it could even be put-up as a side bar category.
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daddio
Dodge Dakota
JOIN HERE
8/10/2004
09:29:39
| RE: What the ........uck???
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jeff g, check out autozone's website. you can find the location of many parts on your vehicle there.
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DMaguire27
Dodge Dakota
JOIN HERE
8/20/2004
22:31:25
| Same location on '99 5.2 2WD?
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I had exactly the same thing happen today, JimB..."check engine" light came on when I left work; I took my '99 Sport to AutoZone and got the P0720 message. I'm hoping to fix it tomorrow (assuming someone reads this tonight).
So does anybody know if that sensor is located in the same place (passenger side of tranny) on the '99 5.2L 2WD?
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