2002 DODGE DAKOTA ROUGH IDLE

  • Tiny
  • Robdog74
  • 2002 Dodge Dakota

2002 Dodge Dakota Quad Cab
45,000 Miles
V6, 3.9

I recently purchased this truck and it was in great condition. Truck has a rough idle now. When I drive it, it runs great no problems. When I come to a stop the idle becomes noticeably rough. When I turn the AC on the idle becomes even more irratic. What can this be, please help.

Tuesday, August 7th, 2007 AT 2:20 PM

16 Answers

  • Tiny
  • raleigh0
  • Member

I have a 1988 Integra too - 266 k+, white.
You sure you have a v6 engine?
Wanna compare notes?

Was this
answer
helpful?
Yes
No
Tuesday, June 5th, 2007 AT 4:35 AM
  • Tiny
  • Service Writer
  • Expert
  • 9,255 posts

There are a multitude of possiblilities. You can check the fuel pressure to make sure it is in spec, pull codes to see if anything is recorded in the computer-1st choice. Try carbon removing chemicals such as seafoam.

If codes are present, you need to address those first.
Find them and post them.

Was this
answer
helpful?
Yes
No
Tuesday, August 7th, 2007 AT 3:15 PM
  • Tiny
  • Robdog74
  • Member

Thanks for the reply. Well I tried getting the codes by turning the key on and off three times and nothing comes up, all it says is " p code done.&Quot; I tried fuel injections cleaner but nothing yet. Can it be more seious?

Was this
answer
helpful?
Yes
No
Tuesday, August 7th, 2007 AT 8:30 PM
  • Tiny
  • Service Writer
  • Expert
  • 9,255 posts

As far as I know the only way to get the codes is with a scanner. However, there very well may be no codes. It would greatly help narrow down the possiblilities however.

We can still go after this. It's a long list, but that's how troubleshooting can be. Start by checking the fuel pressure when the problem is happening and make sure it is in spec. It should be 44.2-54.2 psi at operating temperature.

Was this
answer
helpful?
Yes
No
Wednesday, August 8th, 2007 AT 5:32 AM
  • Tiny
  • rasmataz
  • Member

Try my list

Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel

Let me know when you need more, meantime I'll be taking


http://www.2carpros.com/forum/automotive_pictures/12900_baby_smoking_14.gif

Was this
answer
helpful?
Yes
No
Wednesday, August 8th, 2007 AT 6:07 AM
  • Tiny
  • Service Writer
  • Expert
  • 9,255 posts

Thanks for taking over Jesse, I'll be on vacation for a bit. I was following the Mitchell list regarding idle. IT gives a hand full of specifics for component tests that are most apt to be.
CYA!

Was this
answer
helpful?
Yes
No
Wednesday, August 8th, 2007 AT 7:37 AM
  • Tiny
  • Robdog74
  • Member

Thanks for the infor. You guys are awsome. I'll try your suggestions and let you guys know the outcome. Thanks again.

Was this
answer
helpful?
Yes
No
Wednesday, August 8th, 2007 AT 9:54 AM
  • Tiny
  • Robdog74
  • Member

All right guys here is the latest. I gave it a major tuneup, spark plugs, cap, rotor and changed the TP Sensor. Runs better but the rough idle is still there, not as bad though. Another thing I forgot to mention is the I get poor gas mileage. I got approx 160 miles on a full tank.

Was this
answer
helpful?
Yes
No
Wednesday, August 22nd, 2007 AT 11:09 AM
  • Tiny
  • rasmataz
  • Member

Try cleaning the idle air conrol valve/speed and EGR valves. This don't work check for vacuum leaks

Was this
answer
helpful?
Yes
No
Wednesday, August 22nd, 2007 AT 3:12 PM
  • Tiny
  • Robdog74
  • Member

All right review time! I changed the IAC, TPS, major tune up. Still has idle problems. I even took the truck to a mechanic who could not find anything wrong with it, he didn't even charge me for the diagnostics because he was puzzeled. He mentioned something was definately wrong due to the observation of the engine shaking like crazy. Recap, when I drive no problems, when I come to a stop, it idles rough, when I turn the AC on even worse. Now I am hearing some kind of whining noise coming from under the dash. I'm about to give up on the DAK and I had so many plans for it.

Was this
answer
helpful?
Yes
No
Friday, August 31st, 2007 AT 3:47 PM

Please login or register to post a reply.

Similar Questions