Last post on Oct 18, 2006 at 8:06 PM
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Dodge Dakota, Truck
#3250 of 4362 Re: 2003 Quad Cab 4.7L 2WD [dataguru]
Apr 05, 2005 (3:46 pm)
It's probably a good idea to understand the MIL lamp's function. From the 2003 Dodge Dakota Service Manual:
"The Malfunction Indicator Lamp (MIL) gives an indication to the vehicle operator when the Powertrain Control Module (PCM) has recorded a Diagnostic Trouble Code (DTC) for an On-Board Diagnostics II (OBDII) emissions-related circuit or component malfunction."
Illumination of the MIL can be a momentary flash or a constant illumination depending on the type of fault being detected by the PCM. For some types of faults the PCM will transmit a reset signal that switches the MIL off after 40 engine warm-up cycles or if the problem clears. Others will remain illuminated until the fault is repaired and/or the PCM is manually reset.
As to codes not being stored, this is contradictory to the design of the system. However, it is not uncommon. It's possible that at the time the OBDII scan tool was connected occurred after 40 complete warm-up cycles. Another explanation is that certain codes do not remain in memory if they clear on their own, although that doesn't make any sense to me.
A third possibility is on older vehicles with 3-6 year old batteries. Some Dak owners are aware of the strange relationship between the battery and poor or rough idle, random stalling, irratic transmission actions, and otherwise unexplainable quirks. My suspicion is that with certain close-to-failure battery scenarios the battery intermittently loses power for an extremely short duration causing the PCM to reset. This could cause an erasure of codes stored in memory. I know of two Dakotas, a 2000 and 2001 model, that kept losing stored codes until the batteries were replaced.
Hopes this helps.
#3251 of 4362 Rough Idle/ Transmission
Apr 05, 2005 (4:53 pm)
I have a 2000 dodge dakota quad cab, 3.9litre, 5-speed, first problem is a no load rough idle condition where the tach jumps up and down a little bit and the engine runs slightly rough but if i give it gas or drive down the road it seems fine. the second problem is whenever i accellerate somewhere around 2500 rpm in first and try to go to second gear it seems like it is'nt synchronizing fast enough and wants to grind gears unless i give it plenty of time which really upsets people on the road when i need to accellerate in rush hour traffic but i cant. if i shift normally it works fine but when i go into higher rpm in first it will then grind from first to second............any suggestions for either problem would be awesome, the truck has 80,000 miles, if that could help
#3252 of 4362 42RE or 42RH
Apr 05, 2005 (7:12 pm)
How do I know which transmission I have in my 95 Dakota 2 wheel drive? I am trying to find a replacement, and wanted to know the correct one, and does it matter if it is out of a 4X4? Also, someone told me one out of a Cherokee will work.
Also, what years will work in my truck?
#3253 of 4362 Re: 2002 Dakota SXT (V6) [bpeebles]
Apr 06, 2005 (9:29 am)
Thanks for your information. Is the hose under the hood in front of the firewall or in the cab. I had a hose popped off under neath the circuit box in front of the master cylinder before also. I need to check that hose again in a few minutes. I just noticed that the MIL went away by itself with no action. rswebber
#3254 of 4362 Re: 2003 Quad Cab 4.7L 2WD [dustyk]
Apr 06, 2005 (9:44 am)
Thanks Dusty. My mil problem code (PO456) suddenly went away just awhile ago when I returned for an errant. I just read your reply and am interested in finding out if the problem is fixed or it is still there. I read the battery problem idea and since my truck is 3 years old, am wondering if I don't have that problem. rswebber.
#3255 of 4362 Re: engine lite on [cparkes1]
Apr 06, 2005 (10:29 am)
Just read your message of 06 Jan 2005 where you state that you just resolved a PO456 code. I just got that code (PO456) about 4 or 5 days ago and it just cleared by itself. How did you fix your code may I ask? Thanks. rewebber.
#3256 of 4362 Re: 2003 Quad Cab 4.7L 2WD [dustyk]
Apr 06, 2005 (11:24 am)
thanks for the info; looks like we both have 2003s. The service manual information makes a lot of sense. In my case, the MIL has remained lit and has definitely exceeded 40 complete drive cycles, yet no hard DTC codes are found in memory. This morning, when I cycled the ignition key for checks, 2 back-to-back codes (P0441,P0440) popped up.
The faulty pump unit is being replaced by the dealer under warranty later this week and I'll post any relevant info as appropriate.
Thanks again. Most helpful.
#3257 of 4362 1995 Dodge Dakota Sports 2.5
Apr 06, 2005 (2:52 pm)
I having problems with my truck. I have replaced the fuel filter twice now. It run for a while and then cuts off. Sometimes it will crank and sometimes it will not crank. I really need help. I am to the point of blowing it up. Please can someone help me. I am a very frustrated woman in destress.
#3258 of 4362 STARTING PROBLEM
Apr 08, 2005 (7:56 am)
I have a 96 Dakota V-8. low miles. I had a problem in starting it after driving only 1/2 mile and shutting off. Would not re start even when I poured gas into carb. Went back 5 hours later, and it started right up like it had no problems before. This is 2nd time this happened after driving short distance and shutting off. I thought maybe vapor lock, but dealer says no. Anyone had problem like this? Any suggestions?
#3259 of 4362 Re: 42RE or 42RH [shump76]
Apr 09, 2005 (7:06 am)
There are several ways. First, open the glove compartment and look on the inside of the glove compartment door. There should be a build label that lists the major equipment. The transmission type should be listed.
Another way is to look on the transmission case. There should be the type cast into the case in large block letters.
My guess would be that you have a "RE" series, which means an electronic version. The "RE" stands for "Rear-wheel drive, Electronic." The "RH" stood for "Rear-wheel drive, Hydraulic."