Last post on Sep 16, 2013 at 12:14 PM
You are in the Dodge Dakota-2010 and older
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Dodge Dakota, Engine, Truck
#342 of 467 Idle Surge and Hesitation/Surge while in Cruise Control
Jun 16, 2009 (10:38 am)
I have a question regarding my 2000 Dodge Dakota 4.7L V-8, with 117,000 miles. A couple of months ago, I noticed while having my cruise control set at 60 mph and my rpm setting at 2, that the engine would "surge" just above 2 after going over a slight "rise" in the road (not during) and then go back to 2 on the rpm display. After slowing down and re-activating the cruise control at around 50-55 mph, I would notice as the stick arrived at 60 mph, the engine would give a quick surge slightly above 2 and go back to 2. I added STP Fuel Injector cleaner on three occasions, and it seemed to help temporarily, but it is back and occurs more frequently, even when not going over any rise in the road.
Additionally, about a month ago I noticed that when I would start my truck up in the morning, it would surge while idle then come back down, then surge again, and so on.
Could these two issues be related and what should I be looking at? I was looking online a little, and one suggestion was made regarding the idle surge as it relates to the IAC valve. Any help would be much appreciated!
#343 of 467 Roaring engine at start up
Jun 30, 2009 (7:09 am)
#344 of 467 Roaring engine at start up
Jun 30, 2009 (7:09 am)
2000 dodge dakota quad cab 4.7 engine roars when started up and roars for a couple of miles down the road. It sounds normal after about 2 miles down the road. It seems worse in the winter. What could be the cause of this?
#345 of 467 Re: Roaring engine at start up [bone5]
Jul 03, 2009 (6:20 pm)
Totally normal.... You are hearing the roar of the thermostatic engine-fan. The thermostatic fan takes awhile to disenguage. As I recall, it is the very worst right around 40F.
You can reduce the time it takes to disenguage by gently reving the engine for 30 seconds or so before putting into gear and driving....but why waste the gasoline?
Technical details: Silicone fluid withn the thermostatic-coupling is 'stiff' and takes awhile to get thrown to the outer-edges by centripital force.
BTW: If you had use the "search" feature, you would have found several discussions about this since the 4.7L engine was put into the Dak in 2000. Many people mistakenly think that their automatic-xmission is "slipping" when cold.... as least you did not make that assumption.
#346 of 467 Hard restarting
Jul 05, 2009 (11:18 am)
I have a 1993 dodge dakota with a 3.9 liter v-6. The check engine light is
on. I turn the key 4 times to get the trouble codes. The codes I have gotten
are 22, 23, and 45. I have replaced the coolant temp sensor, the throttle
position sensor, the intake ambient air temperature sensor, the Oxygen
sensor, the pcv valve , and the air intake filter. The engine is hard to
start. After the engine is hot and I kill the engine, trying to restart is
hit and miss. Sometimes it will start right up and other times it won't.
Then it will act as if it is flooded. It won't idle. I rev the engine a
little and the rpm's will finally kick up to around 1500. Then the engine
will run smooth. The codes I get now are 45 and 22. I can't understand what
is going on. Any help will be greatly appreciated.
Also, is the heater/AC blower resistor located in the engine compartment on the R/H firewall on a '93 Dakota? Thanks.
#347 of 467 Re: Idle Surge and Hesitation/Surge while in Cruise Control [wrestlingref21]
Jul 08, 2009 (3:30 pm)
I have the same pickup, the same problem started a few weeks ago for me. I have had it into the shop twice now and they can't find anything wrong with it, seems to cure itself each time I've brought it in. My next call will be the dealer I bought it from even though I have to drive 75 miles, hopefully they will recognize the problem, they are a Dodge dealer. From reading other info online I might try replacing the throttle body sensor before running to the dealer. Good luck!
Jul 09, 2009 (3:36 pm)
will a 96 dakota engine go in a 87 dakota? if so how tough would it be ? any help much appreciated
#349 of 467 97 Dakota powerloss/backfire issues
Jul 20, 2009 (7:29 am)
#350 of 467 97 Dakota powerloss/backfire issues
Jul 20, 2009 (7:29 am)
I read through these boards before posting, but i didnt find an answer to my problem, I have a 97 dakota sport, 3.9 auto, 2wheel drive. A few weeks ago it started dropping RPMs and losing power while driving, warm or cold it didnt matter. Would also happen stopped at a light as well. I replaced the plugs, wires, cap/rotor, and when that didnt do it i replaced the map sensor. Worked great for 3 days, then it seemed like once the engine was heated up it was fine, but that only lasted for like 2 days. Now its just random, i could drive to work and home, then go out later and it could die, the rpms just drop, theres a low backfire sound, more like a putt, then a backfire. sometimes it stays running, sometimes not. Ive looked for bad ground connections. Visually checked for any kind of vacuum leak. The O2 sensors were replaced 2 years ago. It has a exhaust leak somewhere near the engine but i didnt think it was major enough to cause anything like this. Any help on tracking down whats doing it would be great. thanks
#351 of 467 '96 Dakota, Engine Sluggish, PCM Problem?
Aug 04, 2009 (7:21 am)
1996 Dakota SLT, 5.2l V8, automatic, 2WD. Engine has been sluggish the last few months, gas mileage down, auto trans wants to quickly shift through gears up to 4th and lock converter.
No MIL light. Scanned with 2 different scan tools and found only pending misfire DTCs. However, several of the sensor outputs as read through the PCM look strange. Have factory service manual and ran diagnostics on MAP sensor, TPS, ... The sensor output voltages look correct (MAP output Vdc vs manifold pressure). Example,engine OFF, manifold pressure 29.8 in. Hg, MAP output voltage 4.5 Vdc (OK), but PCM says manifold pressure is 9.0 in. Hg (via scan tool). Same problem w/ engine idleing (true pressure 11 in. Hg, PCM says 2 in. Hg). TPS also way off (PCM says 73% open when WOT). Long term fuel trim (7%) indicates some lean mix. Reset PCM by disconnecting power for 15 min. No improvement in MAP or TPS reading. Trans not shifting up as fast - better.
Checked sensor voltages at sensors and at plugs into PCM. No differences. Also checked all splices in sensor lines (5Vdc, sensor output, sensor gnd), all OK.
Question: It sounds like the part of the PCM that reads the sensor voltages (analog-to-digital converter circuit) isn't working right. Anyone else have these kinds of symptoms? Can PCM partially degrade like this? Thanks