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djwalker
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2/27/2001
08:24:44

Subject: 3.9L engine stalling
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My dakota has a 3.9l v6 with 125,000 miles. In the last few months the engine has been stalling out for no apparent reason. I thought bad gas. Still happened so I changed out every sensor around the Throttle body, the MAP, all coolant sensors, the manifold intake temp sensor plus more. Still stalls. I took it to dodge and $300.00 later they said they couldn't find anything. The next time it died, the system really freaked out.. the radio wouldn't work, turn signals out and no heater fan. Plus, the abs, brake and air bag light were on. Stalled again, restarted all lights out except for the check engine light. Now the computer coded that the MAP sensor had low voltage. Could the low voltage be from a bad computer or bad connection ? Replace the computer ? MAP Sensor has been changed out. Anyone with suggestions ??



Bernd
GenIII
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2/27/2001
08:44:47

RE: 3.9L engine stalling
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Didn't see a year for your truck. What year is it first off?

Bernd D. Ratsch
1997 Dodge Dakota SLT
Supercharged w/Nitrous

djwalker
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2/27/2001
09:06:12

RE: 3.9L engine stalling
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sorry,,, it's a 1995, nothing has been changed in the engine or drive train. All OEM truck



dakguy
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2/27/2001
12:24:12

RE: 3.9L engine stalling
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I had mine to things similiar to that and it tuned out to be the main ground on the fenderwell



djwalker
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2/27/2001
12:33:00

RE: 3.9L engine stalling
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could be, the stalling is not consistant. Some days it will run fine without any issues and other days it will stalling a lot. Could you please be more specific as to the location of the gnd ? Thanks for the information.



garth
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2/27/2001
12:54:22

RE: 3.9L engine stalling
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Follow the (-) Negative lead of the battery and that will take you to the fender or fire wall depending were the ground is connected.

Garth
2000 QuadCab 4x4 V6 5 Spd



djwalker
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2/27/2001
13:02:36

RE: 3.9L engine stalling
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I greatly appreciate all of the input from everyone. I was going to have the dealer install a new computer for me next week. But if the gnd issue pans out.. Just saved $350.00. I'll give this a try tonight and see what happens tomorrow.



djwalker
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2/27/2001
13:59:23

RE: 3.9L engine stalling
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we'll if the gnd checks out ok, my next step was to check the connector at the MAP sensor and then follow the leads to the appropriate connections on the computer and do continuity test and voltage test. Other than that have dodge put in a new computer...



Philip LaBarre
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2/27/2001
21:16:39

RE: 3.9L engine stalling
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Hey man I had the same problem with my 98 dakota 3.9 has 30,000 miles. I think another option you should try is to check your fuel filter. Make sure it is clean. Dirt can move in and out of it causing it to clogg. Let me know if it works.



dave
GenIII
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2/27/2001
21:55:49

RE: 3.9L engine stalling
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My first thought would have been a bad ground like dakguy said. the other thought of a plugged fuel filter could be valid also.

Dave Fisher
1998 Dodge Dakota Club Cab Sport 4X4
3.9L V6

redbone
DakotaEnthusiast
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2/28/2001
00:41:38

RE: 3.9L engine stalling
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check the catalytic converter if it gets plugged it can cause that hay wire shit thats going on

redbone
01 dak 4.7 3.55 posi stik

john walters

Bernd
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2/28/2001
00:59:52

RE: 3.9L engine stalling
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The '97+ Dakota's do not have a fuel filter. They only have a fuel screen...and that's in the tank.

Bernd D. Ratsch
1997 Dodge Dakota SLT
Supercharged w/Nitrous

djwalker
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2/28/2001
07:06:40

RE: 3.9L engine stalling
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At about 110,000 the fuel pump assembly was changed out. As Bernd said, there is no fuel filter. The screen is attached to the bottom of the fuel pump inside the fuel tank. When you change out the entire fuel pump assembly the screen and fuel guage float is also changed out. I checked the gnd, two of them. One to the power steering pump, the other right in front of the battery attached to the body. There was one connecter from the postive side of batter that was like a bayonet coupler. That had a lot of corrision. You unplug it and the whole vehicle goes dead... Let's see what happens.. Thank you again for all of the idea's and input. One other question, since the motor does have 124,000 on it. Any ideas of how to make the motor more responsive, a little more "get up" ? Oh almost forgot, the connector that plugs into the computer itself did have visible signs of small moisture in it. I cleaned with electrical parts cleaner and ensured it was completely dry.



PartsMan39V6
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2/28/2001
11:29:39

RE: 3.9L engine stalling
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I work at a Dodge dealer parts department, so I'm just going mainly by what I hear from the techs and what we sell alot of. By the way, on 97+ Dakotas there are 2 fuel filters. One is the in-tank screen. The other is built in to the regulator assembly. From my dealer, it runs about $75 for a new one, but since you mentioned that the fuel pump assem. was replaced, the regulator was too more than likely. Anyways, back to the stalling. A lot of times, when there is and unexplainable problem with a vehicle, the techs will replace the ECM and it will sometimes fix the problem. The problem with this is $350 is alot to throw at a vehicle when you aren't sure that is it the problem. And your last question, about performance, Mopar offers some really neat stuff for the 3.9L. On my 2000, I have the cat-back exhaust and the cold air induction kit. It really makes a difference with both power and fuel mileage. Plus it didn't cost too much to have it done. Well I hope I helped out a little bit. And remember to keep it rubber side down.



djwalker
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2/28/2001
11:37:06

RE: 3.9L engine stalling
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who manufactures the cold air induction kit & the cat-back exhaust?? any links ??



Bernd
GenIII
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2/28/2001
17:19:52

RE: 3.9L engine stalling
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K&N Build the Intake Systems for Mopar Performance and Dynomax is the builder for the exhaust systems.

On the two fuel filters, have your tech dbl-check this since a few only have one...not two. (It's a Dodge thing...it happens.)

Good to know on the regulator though...i'll be checking mine eventually.

Bernd D. Ratsch
1997 Dodge Dakota SLT
Supercharged w/Nitrous

Ryan Kane
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3/04/2001
23:38:12

RE: 3.9L engine stalling
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Sounds like you need to do an off-engine diagnostic test using the "CHECK ENGINE" light. You can do this by following these instructions:

http://www.geocities.com/Baja/Desert/1727/FaultCodes.html

You will see exactly where in your system there is failure.





David Sharpe
Dodge Dakota
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3/07/2004
09:10:36

Power steering pump
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On my 2000 Dodge Dakota I have lost 2 power steering pumps while backing up. I have had the truck less than a year. Any help?



djwalker
Dodge Dakota
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3/07/2004
11:14:44

RE: 3.9L engine stalling
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It's been three year since I posted this. Bad coil. Are you letting snotty noses kids drag up these old posts?



a c cooper
Dodge Dakota
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1/24/2007
18:26:24

RE: 3.9L engine stalling
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I have a '98 dakota 3.9. I have replaced the ignition coil twice, and the cat and downstream 02 sensor in the last 3 months. the engine started stalling on me at low speed about 2 weeks (250 miles0 after the 02 sensor installation. There are no alarm codes.
Any suggestions?



jake
Dodge Dakota
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1/26/2007
18:47:34

RE: 3.9L engine stalling
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i have a 97 stalls when its cold out all the time parts new conputer oxingen sencer,coil plugs ,wires, gas pump and filter in tank,went throught ground and ck all connection .still stalls and the local dealer has had it with a cost of $200.00 and still stalls



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