The problems that are occuring with this vehical started without any warning! The day stuff went haywire I had started and stopped the truck 7 times. I went to start it and didn't have enough power to make the door dinger ding so I jump started the truck.
At this point there hasn't been any check engine lights at all Once the truck was running for about 5 minutes the volt meter on the dash went up to 18 and all the lights were flickering so I figured voltage regulator.Taurus pt98
I replaced the alternator and the the volt gauge still went up to After talking with several mechanics I was told that the voltage regulator is in the computer in that truck. I unhooked the positive battery cable while the engine was running and immediately the volt meter went back to I drove the truck about 10 miles home with the cable unhooked and the volt meter went up to 18 about 5 miles into the trip.
I replaced the computer. When I jump started the truck and with a new computer and alternator this was the first time the check engine light came on and it was only running on 7 cylinders. The volt gauge is now at 14 normal and the lights are no longer flickering.
At this point the engine had been running about 5 minutes and I began to smell a electric fire type smell so I shut it off and discovered that the coil pack on the front right cylinder was melted and almost caught fire. I am very puzzled about whats wrong. I have kept very good care of the truck and always keep up on routine maintenance. Please HELP! Do you. You have caused an unknown number of problems by running it with the battery disconnected.
That was a simple test uneducated mechanics did many years ago when they didn't understand how charging systems worked. The battery is an important part of the voltage regulating system. The alternator puts out three phases of pulsing voltages. The battery smoothes those pulses out to a steady voltage which the regulator watches. Without the battery, the regulator will try to respond to the dips in the output voltage from the alternator.
A dirty or loose battery cable could have started this. When the alternator voltage dropped momentarily to around Computers are not very tolerant of incorrect supply voltages so there's no telling what has been damaged. The place to start is with the battery cable connections. Be sure they're clean and tight, and do not run the engine with the battery disonnected.
2000 Dodge Dakota
Was this answer. It's hard to say definitely if a burned up coil was caused by the high system voltage. Logic would dictate other damage should have occurred too.
Another possibility is the coil was getting ready to fail, and the high voltage just hurried things up a little.The powertrain control module PCM in your Dodge Durango is located on the right passenger side of the engine compartment. It is the circuit board computer for the SUV designed to withstand extreme temperatures.
The components in the engine, transmission, drivetrain and other areas send information to the PCM. If the PCM detects an issue with a component, it triggers the malfunction indicator light to illuminate on the dashboard of the Durango. Dodge technicians often debate as to when and if you even need to reset the PCM.
Locate the battery and remove the black-wired negative terminal from the battery. Turn the ignition key until the Durango starts and allow it to idle. Check the dashboard for the malfunction indicator light status. This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.
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Step 1 Open the hood of the Durango. Step 2 Locate the battery and remove the black-wired negative terminal from the battery. Step 4 Reconnect the negative battery terminal and close the hood. This is where the debate comes to issue. The time it takes to reset and relearn or just replace a component and allow the PCM to relearn on its own is comparable. The only time the PCM should be considered for a reset procedure is when a component that has triggered a diagnostic trouble codes has been replaced or corrected.
Otherwise the trouble code will end up re-triggering the MIL light on the dash. About the Author This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.So how do you find out what problems are occurring? Any duplicates or errors? It's not us. Don't waste your time wasting ours!
If you are interested in advertising a for-profit service, contact us. Find something helpful? Spread the word. Share on Facebook Retweet this page Email this page. Add Complaint. Driving vehicle and activating the left turn signal.
NHTSA — Electrical System Problems
The signal had failed causing the vehicle computer to fail and removing power from the transmission. The check engine light was illuminated and instrument panel lost power. Diagnostic error indicated a bad shift indication. Replaced switch and resolved issue.
On two occasions this vehicle experienced a serious safety issue when intermittently the turn signals fail to operate simultaneously with the windshield wipers also stop working. This can happen at any time and is particularly dangerous while in traffic and in a heavy rainstorm without warning the windshield wipers stop. This problem happened to me in may of Mileage on the vehicle was 23, The problem was identified by the Dodge technician as a defective multifunction switch - part number ab.
The multifunction switch was removed and replaced by Dodge under warranty.
The problem recurred in January of Mileage on the vehicle at that time was 35, 12, miles driven since the first incident. The problem was once again the multifunction switch - part number ab. I was told by the service manager that this problem could not be covered under warranty since I had exceeded the 3 year warranty period. Everyone including myself knew when I took the vehicle in for repair exactly what the problem was.
It appears that Dodge has a serious repetitive problem with this integral part.Every few weeks i get into my truck and shift it into reverse, it slams into reverse and goes, then i pit it into drive and ince again it shifts hard, then i step on the gas and my RPM'S go up to about 2.
Because it's a whole issue with ordering a new one and i really dont want another one. Dodgedakota06 answered 2 years ago. I forgot to mention that when I remove the 20 amp fuse for the pcm I put it right back in and its not blown or anything its perfectly normal. John answered about a year ago. Hey, did you ever get this resolved? Add me to the exact same symptom list. Anyone get it sorted? Dodgedakota06 answered about a year ago.
I got a new computer again and it solved the problem until just recently where it happened all over again. Even with the new computer it still was shifting weird but i let it be. Just ordered yet another computer. Thanks so much for that! Looking around online with these symptoms and my heart just sank at what I am finding.
Had no clue these trannies evidently notorious Or am I mistaken and it is plug and play? Thank you!Urllib2 pypi
The computer needs to be programmed to the vin of your truck. So yes it needs to be programmed specifically for each vehicle. The computer makes it seem as if the transmission is going because on these dakotas the ecm and pcm are one.
Meaning that the computer controls the engine and transmission so when the computer fails it sends error codes out thinking the transmission is failing when its actually not. In my case about 13 codes pop up on my obd scanner. Any one have a solution yet? I have an 06 as well and got several codes. Took it to the tranny shop and had it rebuilt.
When we got it back, the temp light came on and the chime started up.RE: no bus PCM failure!!!!!! IP: Logged Message: All ready new the answer! IP: Logged Message: Thank you weld I cleaned the crank sensor and dodge ram started right up. IP: Logged Message: unplugged the crank sensor? IP: Logged Message: have a 02 dodge dakota blinks no bus on miles 3 times then check engine light comes on with a few other lights on dash no gauges work no start also fine it more so after it rains still not runnig for a week now starts to run rough then i no it will screw up again.
RE dodge dakota no bus light IP: Logged Message: My dodge dakota will not start it has a no bus light on where the gauges are.
How to Reset the PCM on a Dodge Durango
Can someone give me some help!!!!! I have the same no bus message on odometer. Truck will turn over, no bus message blinks a few times and then constant.
I have looked at several forums for answers, haven't found any answers that provide enough information. Thought it was a wiring or sensor problem, maybe needed a new cluster or something but Come to find out all it needed was a Brand new computer.
4 Painful Signs That Your Car’s Engine Control Module Has Problems
IP: Logged Message: junk truck or buy new computer, your call. IP: Logged Message: Dakota quad cab 3. Same problem. No bus on odometer. Scan tool cannot communicate with PCM. All good none grounding out. Replaced crankshaft sensor. It was running great and just died driving down the road. Verified all ground connections. Pulled PCM, opened case sealed in gel with no visible damage.
I cannot find the ASD relay that some people have referenced.Replace Computer (PCM) in 2002 Dodge Dakota
Any help would be appreciated. It used to happen after 30 minutes on highway, now it is down to minute drive, and it dies. At first the gauges freeze, then they drop down to nothing. All the gauges are not working, but flashers, radio starter all work. It takes 10 minutes usually to work, last time it took 50 minutes to work. When I turn the key on and the gauges come to life, then I know truck will start. I got no clue, any ideas?Full Name. Phone Number.
Email Address. When conditions change, the ECM will automatically make adjustments in real time. That is why it is so important to recognize the symptoms of ECM failure. The ECM controls a number of systems, but the most important ones for our purposes are the air to fuel ratio, the engine timing. It also controls the transmission in automatic transmission vehicles, and valve timing on vehicles with variable valve timing. This is superior to old, mechanical systems, where you had to adjust the carburetor from time to time or have the engine timing tuned.
When an issue arises, the ECM will log an error code that lets you know the source of the problem. This can be advantageous since you can determine the exact cause of failure. The most common source of ECM failure is in one of the wiring harnesses. If the wires to the transmission or fuel injectors become corroded, they can lose conductivity, leading to a failure.
Fortunately, these issues can usually be resolved by replacing the corroded wires. If one of the wires shorts out to the frame, the ECM may fail entirely. This can also happen due to power surges due to a lightning strike or arc welding on the vehicle frame. Installing a new starter can also cause ECM failure.
This is because they often bypass the surge protector on the ECM, leading to a power surge when you start the vehicle. The same thing can happen if you get your wires crossed while jumping your car.Cph1853 latest firmware
A failing battery can also cause ECM failure. In this situation, replacing your battery will usually solve the problem. Here are the four most common symptoms of a bad ECM computer:. There are many reasons your Check Engine light can turn on.
These range from emissions problems to faulty O2 sensors to problems with the ECM. The only way to be sure is to visit a mechanic with the proper computer. Of course, there are other reasons a car may not start, including a bad starter or a blown alternator.
Since the ECM controls your air to fuel ratio and transmission, a faulty unit can cause your gas mileage to drop through the floor. It can also make your car sluggish, or give you trouble when going up hills or suddenly accelerating. If your vehicle used to run well but is suddenly having problems in these areas, you probably have a faulty ECM.A Dodge's powertrain control module PCM serves as the central computer for a vehicle's diagnostic system. The PCM analyzes sensor readings and engine functions.
As soon as a component within the engine or fueling system malfunctions, the PCM issues a code and labels the problem either "trouble" or "pending. Testing this valuable device can be accomplished in a few minutes. Prepare some important materials before you check your Dodge's PCM.
Take a highlighter to both and mark all the trouble codes that deal with the PCM itself. For example, P denotes failure within the PCM itself. While testing the system, you should keep an eye out for it. Place the coding resources in your Dodge's navigation seat. Then, get into the vehicle's driver's seat.
Locate your Dodge's computer outlet beneath the dashboard. The location of this data link connector depends on year and model of the Dodge. It may be beneath the steering wheel, next to the left kick panel or above the gas pedal. Switch the device on, and then turn the Dodge's electrical system on. Always keep in mind that no two scanner brands function exactly the same. Look at your device's display screen.
If there are no codes waiting for you, you own a scanner that is not preset for automatic code retrieval. Locate the procedure for entering a "Code scan" command. It usually entails pressing a button.
Scroll through the codes on the scanner's display screen. The PCM is part of the vehicle's powertrain.
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