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Derek
Dodge Dakota
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11/21/2008
09:58:19
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 Subject: RE: 3.9 liter misfiring and stuttering
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I think your code might be for something else considering that no one else has a code for the issue
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daddio
Dodge Dakota
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11/21/2008
10:15:04
| RE: 3.9 liter misfiring and stuttering
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gges, to read the codes just turn the key on/off/on/off/on and the codes will display in the odometer and when it's done or no codes are stored, it will display Pdone.
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Tony
Dodge Dakota
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11/24/2008
21:14:03
| RE: 3.9 liter misfiring and stuttering
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I have a 98 ram 1500 with the same problem,I have changed dist.cap, plugs, wires, and the fuel injector for the cylinder that has the miss in it. and it still is not fixed it is either the valve spring is worn and broken or cam lobe is broken or worn. if this sounds like it makes sense let me know my truck is sputtering all the time and has a dead miss in the number two cylinder, it has a ticking sound in the top of the motor.
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daddio
Dodge Dakota
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11/25/2008
09:33:40
| RE: 3.9 liter misfiring and stuttering
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Message:
Tony, it could be a leak in the intake manifold. if you suspect a valvetrain problem, don't go thinking the worst unless you do a compression test on the suspect cylinder. then go from there.
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yvrdakota
Dodge Dakota
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11/25/2008
10:01:04
| RE: 3.9 liter misfiring and stuttering
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Message:
i have the same problem fault code p0301 (misfire detected
cylinder no 1), i've replaced the plugs, wires, dist cap, rotor.
problem happens when engine is cold (within 2km's)
fuel injector next??
any help from similar problems would be appreciated
99 dakota 3.9
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Tony
Dodge Dakota
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11/26/2008
18:59:15
| RE: 3.9 liter misfiring and stuttering
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Message:
I got it fixed, it was a busted roker arm. runs good now.
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DeLong1
Dodge Dakota
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11/27/2008
10:48:20
| RE: 3.9 liter misfiring and stuttering
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Hey guys....heres' something else to check on your 3.9 when you can't find why it skips.
I have a 2000 dakota sport which I have drove for just under 300,000 miles now, at around 225,000 I developed a skip which I couldn't eliminate with plugs, wires, cap and all the other routine stuff. Did a compression check and a vacuum check and found the problem. The exhaust valves had worn themselves way down into the seats to the point where the lifters didn't have enough stroke to open them fully. I took the heads off, pulled the valves and saw that Dodge dosen't put in hardened valve seats anymore, they use what is called induction hardening of the cast metal that is already there. Took my heads to a machine shop and had new seats put in along with new exhaust valves, intake seats and valves were fine. That was January of 2006 and 75000 miles ago, ran excellent ever since! One thing to note, I have always used Mobil 1 oil in this truck and have run the crap out of it daily. When the heads were off, there was no ridge on the cylinders and the factory honeing was still visable. I run this truck daily to work which is usually 100 miles one way (construction). This engine burns or leaks nothing! Also own a 2008 quad cad sxt dakota which is also a very good truck.
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Philip
Dodge Dakota
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12/12/2008
15:12:10
|  RE: 3.9 liter misfiring and stuttering
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Message:
Ok got the same problem i think. 1999 dakota 3.9 truck sat for a few months got it back out and it will be fine for about 7 miles then starts missing and backfiring looses power does it for a while but if i drop it down a gear or 2 it will clear up after a mile or so but sometimes if i go back to 5th to soon it start doing it again. kicked out a cam position sensor replaced it and it still does it. Now motor is making a ticking noise sounds like a rod bearing but not sure and if truck messes up the noise gets worse and stays worse also seems like the colder it is outside the worse it does it. any help would be appreciated as i can not afford to take it to a shop
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Philip
Dodge Dakota
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12/12/2008
17:48:40
| RE: 3.9 liter misfiring and stuttering
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Message:
Forgot to mention that it seems to only start missing when i get off the gas and back on. the code it kicked out was p1391 said manufacturer ignition error or misfire. thanks
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Don
Dodge Dakota
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12/14/2008
19:02:19
| RE: 3.9 liter misfiring and stuttering
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Message:
I had the same problem with both my 87's.I found that the Hall Effect Distributor was broken and had to replace it
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Philip
Dodge Dakota
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12/15/2008
14:55:00
|  RE: 3.9 liter misfiring and stuttering
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Message:
what is the hall effect distributor?
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Adam
Dodge Dakota
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5/08/2009
14:50:01
| RE: 3.9 liter misfiring
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i have a 2000 dakota V6 and i keep getting a misfire on cylinders 3 and 5 and occasionally on 1. i have replaced plugs, wires, cap, rotor, coil, crankshaft sensor, had injectors cleaned, replaced o2 sensors. could this be a camshaft sensor problem?? i am going to do a compression test soon. it seems to miss all the time but only bad enough every once in a while to throw a code. fuel pressure while running is good. injectors are spraying fine with no leaks. any help would be appreciated.
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Matt S.
Dodge Dakota
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6/07/2009
02:27:11
| RE: 3.9 liter misfiring and stuttering
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Message:
Has anyone actually found the cure to this problem yet? I have an '03 3.9L 5-speed with the same intermittant power loss / backfire then runs normal for a while. Getting a code for O2 sensor high voltage B1,S1. This is driving me crazy!!! I replaced the B1, S1 sensor with no luck. I have of course done the normal tune-up. Plugs,cap rotor,wires. I have checked for vacuum leaks, even pulled the intake and replaced the plenum gasket. Have performed check for MAP and TPS out of Haynes manual but have not replaced them because they check fine. Everthing I have done does make it run better but the power loss then backfire does'nt go away. Should I replace the TPS and MAP anyway, or is this a waste of money? Is it the computer? Is it the fuel regulator/filter? Has anyone fixed this problem?
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dakotamark
Dodge Dakota
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6/08/2009
23:55:13
| RE: 3.9 liter misfiring and stuttering
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Message:
i had a 2000, v6, 5spd man, had the same issue, it was some
differential sensor of all things. i used a code reader, verified it
with my parts place, paid $75 for the new sensor, and was on the
road again.
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Matt S.
Dodge Dakota
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6/09/2009
00:38:40
| RE: 3.9 liter misfiring and stuttering
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Message:
Thanks for the info dakotamark. Do you mean the speed sensor? I do believe that the computer uses this sensor to control the mixture.
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kevin
Dodge Dakota
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9/07/2009
11:27:51
| RE: 5.2 liter misfiring
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I have a 1997 Dodge Dakota, with 250,000km. Have been having intermittent misfire code on cylinder 2 for about 5 years. Replaced wire, plug, cap and rotor three times. Problem would go away for some time then return. Problem is getting worse. Everytime they try something new i get a different misfire. 1 month ago,replaced cap, rotor, wire and plug. Misfire came up 2 and 8. replaced fuel injector plug and wire on cylinder 8. then two days later code came back. garage changed intake gasket. three days later i get misfire on 4 and 2. now this mechanic tells me i need all a total valve job. what i don't understand is. if it is valves why is the misfire jumping from cylider to cylinder.
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daddio
Dodge Dakota
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9/07/2009
12:46:44
| RE: 3.9 liter misfiring and stuttering
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Message:
Sounds like you may have a worn distributor shaft bushing or worn distributor. If your mechanic says it needs a valve job ask him if he performed a compression and ask for the results. I bet he did not do a compression test. I would find another mechanic.
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rebuilt dodge
Dodge Dakota
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9/18/2009
21:43:20
| RE: 3.9 liter misfiring and stuttering
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this is the problem i am having 88 dakota cab and chassis build. 3.9 auto. the truck runs ok when cold. most of the time. when the truck gets 7 blocks it will sputter and when you try to push on the gas from a stop it will bog way down. the only sollution i can find is to shut the truck off and restart it. the truck will run fine until the next stop or turn. or if on the highway you let the pedal off. and get back into it again. NO CODES present.
now some history. the catyltic converter has been replaced with straight pipe. the smog pump lockup and was removed. it got so hot when the converter plugged up that it melted the smog pump hoses. the egr vacuum line was plugged off when i got the truck.
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rebuilt dodge
Dodge Dakota
JOIN HERE
9/22/2009
16:40:03
| RE: 3.9 liter misfiring and stuttering
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Message:
i see so when i ask a asecond time my post is just deleted. what? you can't just tell me to p off? instead. hello. is there anyone out there. this truck wont get over 35 miles per hour and it bucks like crazy. i have some work coming up and it need to run son. or maybe i need to follow the one guys advise and get a silerado. yuk. is this post even reaching the forum to be posted at all. i have no idea. please respond saying atleast that you are seeing the post.
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daddio
Dodge Dakota
JOIN HERE
9/22/2009
16:57:25
| RE: 3.9 liter misfiring and stuttering
IP: Logged
Message:
No need to get bent about the slow response. You would have gotten a quicker response if you had started a new thread.
Now to your problem, when was the last tune up mileage wise? What was changed? Could be a bad temp sensor. Could be a short/bad connection. I'm not sure if your truck has the infamous splice #115 underneath the underhood PDC.
Let's see if someone with an older truck as yours will chime in.
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