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Pickups Dodge Dakota Dodge Dakota Engine and Underhood Questions
371 messages, Last post on Nov 06, 2009 at 6:41 PM
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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?
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Replying to: bone5 (Jun 30, 2009 7:09 am) 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. |
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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. |
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Replying to: wrestlingref21 (Jun 16, 2009 10:38 am) |
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| will a 96 dakota engine go in a 87 dakota? if so how tough would it be ? any help much appreciated | |
| 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 | |
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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 |
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