Last post on Jan 19, 2011 at 1:19 PM
You are in the Dodge Dakota-2010 and older
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Dodge Dakota, Truck
Sep 16, 2010 (3:35 am)
My 99 sport 4x4 cranks fine and runs fine until it warms up.Then it doesnt want to idle but its fine at high RPM's. 3.9 motor. Can anyone help PLEASE?
#29 of 33 Yet another Idle issue on 1998 4x4 Dakota 3.9 Auto
Nov 01, 2010 (1:07 am)
I've been searching for weeks online for an answer to this issue I'm having so I'll try here and see what I get for an answer since dustyk seems to be direct and to the point.
My son couldn't make payments on his 1998 4x4 Dakota SLT with a 3.9 and auto and 104,000 miles, so I took it over figuring it would be good to move our boat from the shed to the ramp at Raystown Lake in PA (less than a mile). The issue he passed on to me though is a throttle issue. The throttle responds as it is supposed to when the truck is first started and until it warms up, then if you step on the pedal while in park or nutural the idle will roar to about 2800 rpm and very slowly back off to about 750 give or take. When I say "slowly falls" it might take 8 -10 seconds to fall back down to 750. In gear this is not evident if it's happening, but I have to think it could so I'm concerned...a lot.
I've replaced the TPS since it seemed one of the cheapest fixes and the root of much discussion for idle problems. I think I did a pretty good job checking all the vacuum hoses; and they look good although I'm tempted to replace them just to be sure. I cleaned up the IAC and it's seat/port in the TB, and it tested ok using a 9v battery, but it might be sticking and it's the original, so I'm thinking it's another cheap replaceable item that probably will need replaced soon if it's not the root to the current issue thinking of the vehicle age and mileage.
The dealer where he bought it was closed by Dodge in the sweep of taking away small town dealers this year, and I'm not real happy with the alternatives that charge 30% more just to component change and they really don't care what your name is as long as the money is green, so it hasn't been to a dealer shop for their opinion. Our local shop says it might be one of these sensors but without leaving it with him he can only guess (he is mostly GM by training).
I'm not dumb under a hood or at least in the old days I wasn't , nor afraid to get my hands dirty so I'm looking for possible answers and then I can change my own components without the hourly labor charge.
Thanks for your help!
#30 of 33 weird,weird dakota issue
Nov 04, 2010 (6:30 pm)
#31 of 33 weird,WEIRD Dakota issue
Nov 04, 2010 (6:39 pm)
I have a 2000 Dakota,181,00 miles, magnum 6 cyl engine;at below 30 degrees my truck starts and idles fine;after 10 miles or so,I notice some hesitation;if I take my foot off gas pedal and start to accelerate the engine falters then suddenly throttle up;this goes on for a few miles until I come to a complete stop.At no time during all this bucking and jerking does the engine light come on.
When I take off again the vehicle is fine and runs all day long at any speed with normal acceleration and idle;once the truck sits all night it is the same problem the following morning unless the temps are above 32.
I changed out the coolant temp sensor and have had a tune up within the last year with new plug wires installed.All other sensors on the car are original parts.
Any suggestions? I would appreciate your insights..thanks ! Mark
#32 of 33 dodge dakota throttle position sensor
Nov 21, 2010 (12:52 am)
truck was taken to shop where 3.9 v-6 was diagnosed with faulty tps they replaced it and now idle speed is about 1000 rpm too high
#33 of 33 idling / rough idle problems on 2002 Dakota SLT
Jan 19, 2011 (1:19 pm)
I don't know much about engines, but my Dakota is having acceleration/idle problems, and the computer isn't showing trouble codes...problem has gotten much worse after replacing head gaskets & gasket on exhaust manifold. It's a V8, 4.7 liter, 2002 Dakota SLT with 4W & AW Drive. Prior to the head problem, it had a minor rough idle and appeared to want to die on quick stop in early morning after the installation of a new air filter system (which made a whistling sound), but after the heads were fixed, it idles rough & barely wants to climb a hill (like it's starving for gas/air). Repair shop says to drive it for awhile so trouble codes will register, or I can leave it at the shop for a couple of days. Since I don't know too much about engines, I'm hoping you experts can give me some ideas on what the trouble(s) could be (budget). It's got 109,476 miles on it. Plugs, oil, sparkplugs, and one of the O2 sensors were replaced when the head gaskets were replaced (no wharp/crack).