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Tim Dakota90
Dodge Dakota
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3/09/2002
11:12:11

Subject: 3.9 engine knock
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I have been reading alot here about engine knock and have the usual engine ping with my Dakota 90.
I have replaced plug wires and coolant sensor, but no change. I was wondering if the knock sensor could be the problem? No one has mentioned that possiblity. would I be waisting my money if I changed it?



IntenseDak39
GenIII
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3/09/2002
18:38:03

RE: 3.9 engine knock
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i don't think they are that expensive... wouldn't hurt to try.

intense

"How's my driving?........Race me and find out!"

Drew
Dodge Dakota
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3/09/2002
20:58:58

RE: 3.9 engine knock
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Does anyone have a sound file of what this problem sounds like?... I have a problem with mine but I'm not thinking that this is the problem.... as a side effect when i push the gas the motor seems to "gargle" ? it has a verry deep almost drowning sound and doesn't have verry much pickup at all....and just seems to get worse when the overdrive kicks in at 60KPH.. also the gas mileage seems to have gotten alot worse,

I have a HAWK cap on the back, '98 cc 3.9, K&N Drop-in Filter, Stock everything else..

I took it to the dealer and all they say is "Well it's a V6 thats what they sound like"


But i've had 6 other v6's and this is the only one that did this.. :(


HELP..


Thanks in advance
Drew




Patrick Jones
Dodge Dakota
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3/11/2002
20:22:53

RE: 3.9 engine knock
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for what it's worth, i lost a LOT of pickup a few weeks ago and gas mileage dropped from 20 to about 12. Replaced distributor and cap and that did the trick for my 98 3.9.

as for the knock, i've had the same problem since I bought the truck. my question is what the heck is a knock sensor??



Todd W
Dodge Dakota
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3/11/2002
21:36:11

RE: 3.9 engine knock
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It's basically a little sensor that detects irregular, sharp, vibrations (knocks) in the engine and then reports it to the computer. The computer, basically, busts a nut over this and freaks out, shoves everything into "OH CRAP" mode and puts on the "Check Engine" light while it says a little prayer to the truck gods. :0)



IntenseDak39
GenIII
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3/12/2002
02:20:58

RE: 3.9 engine knock
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*clap clap clap clap*

good explination!
"oh crap mode"

"How's my driving?........Race me and find out!"

youngin
Dodge Dakota
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3/12/2002
08:46:23

RE: 3.9 engine knock
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I had a knocking in my engine since i had the truck. It would start at idle and as i increased the speed, it would knock faster. My dealer said it was a normal truck sound. A few months later, they fould out the previous owner did a little driving with possibly no oil. The knocking: A piston was rubbing. Got me a whole new "refurbished" engine. No knocking now.



Todd W
Dodge Dakota
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3/12/2002
09:37:16

RE: 3.9 engine knock
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Eh?

Oh, my fricken head....

:0P



Ross
Dodge Dakota
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3/12/2002
15:42:38

RE: 3.9 engine knock
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it might not be the same problem,but i have a strange noise in my 95 3.9. i haven't had it looked at, but everyone i have asked said it sounds like play in one of the lifters. i had the same sound with my old 90 model.

Ross



Tim Althoff
Dodge Dakota
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3/12/2002
17:52:23

RE: 3.9 engine knock
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check you vacume pressure (for your belly pan). www.speedtweaks.net tells you how-to. Since i modified my intake manifold and replaced my bellpan gasket with ultra copper RTV i have had ABOSLUTELY NO PINGING!!! It truely is amazing...

Tim Althoff
99 RC Dak w/ V6 5-speed
http://go.to/yllwdkta
within days of www.yllwdkta.com



Todd Davies
Dodge Dakota
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1/16/2003
22:21:33

RE: 3.9 engine knock
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Hi, I have a 99,4x4,V6,5 speed dakota. The problem i'm getting is when i have to push the truck a little harder like going up hills,i am getting a clicking like sound. A friend said it was engine ping. But only when i hit the gas and the truck needs to work,like if i'm in to high of a gear for instance going up hill I really hear it...Please give me a hint on how to fix this...THX. I was told getting the injectors flushed out!



Brent
Dodge Dakota
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1/18/2003
12:02:49

RE: 3.9 engine knock
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After warm up mode,my 99 4x4 3.9 ,sputters pings and back fires ,the colder the day the worse the problem. MIL fault light is on ,but I cant get a fault displayed on my odometer.Do you have to use a reader on 99 models to get faults?



mtlcafan79
GenIII
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1/18/2003
19:11:05

RE: 3.9 engine knock
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With my 2000 you can turn the key to the accessory position three times and then leave it there. It will display the codes in the odometer. Go to http://www.obdii.com/codes.asp , type in your codes, and it will tell you what they mean.

Sean



danny
Dodge Dakota
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1/18/2003
20:02:58

RE: 3.9 engine knock
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knock sensor tell pcm 'WE HAVE SOMETHING GOING ON THAT IS NOT RIGHT' pcm cuts back the timing "PING AND POWER GO AWAY" no more problem!!!!!AND JUST ABOUT ALL DO NOT HAVE KNOCK SENSOR ANYWAYS....MY .02 WORTH Danny



chris
Dodge Dakota
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1/19/2003
19:55:12

RE: 3.9 engine knock
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i went to my parts guy on a hit from a professional engine builder that i should maybe try a cooler plug . champion makes a cooler plug for the 2000 dakota ,since installing them i get little or no knock on regular gas . got a little more get up out of her to. it also helped when i took out the original bolt that holds the breather in place on the throttle body and replaced it with a piece of threaded rod ,



Rosie
Dodge Dakota
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1/20/2003
17:36:00

RE: 3.9 engine knock
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I just use supper gas now. Every time I switch back to reg I loose all kinds of power (v6) and I have to use fuel injector cleaner. I pay the 3 bucks a bottle for the synthetic stuff works like a dream, and the proverbial raped ape.



Noah
Dodge Dakota
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9/27/2015
14:29:55

RE: 3.9 engine knock
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I know it's 12 years late, but my 98 3.6 Dakota has the same
gurgling sounds!!! I can't afford a new motor, and I don't have
many tools. I can't figure out if it's a valve issue or an early
knock from rod bearing wear... So disappointed



Bobby Lane
Dodge Dakota
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12/22/2019
01:53:56

Sensor
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Can somebody please tell me what sensor is
on the back of my intake over on the
passenger side



Bobby Lane
Dodge Dakota
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12/22/2019
02:06:02

RE: 3.9 engine
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Can somebody tell me what sensor is on the
back of my intake on the passenger side
next to the distributor



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