Engine Surges
An engine surge is often caused by a fuel system operations or drivetrain operation failure. The fuel management system makes use of sensors that keep track of emission output and engine overall performance and are interacting with the main PCM (powertrain control module) managing fuel mixture, timing and emission management systems. When the engine is surging the PCM is "hunting" by altering the fuel mixture and timing. These corrections are made by the PCM in an isolating manner as the PCM tries to match its parameters. These parameters are not being satisfied due to a system breakdown.
PROBLEM:
06 durango, stalled last night pulling out of drive way leaving for work, then was revving
erratically engine light came on, only drove a 1/4 mile. Put a scan tool on it, said low voltage, and OBD ii codes P0562 low voltage, P0876 trans fluid pressure switch P0700 transmission control system mil request.
Started it this morning battery was shot started super slow tested battery only had 12.1v,put new battery in, it started right up much faster, but will not go in revers or drive its like its in neutral, fluid is clean and full but it wont move at all, jacked up the car to see if wheels would spin in gear they do not, if i spin the tires by hand the speedometer reads the speed.
Main Problem:
While turning out of the driveway, after it stalled the engine was running erratically revving up and down then the check engine light came on.
There were no codes prior, they all popped on after it stalled. Its a 4.7 4x4 slt.
Troubleshooting:
First We Will Discuss OBD Error Codes:
What Exactly This OBD ii Error Codes Say Or Point Towards:
OBD II Code P0562 sets when battery voltage falls too low and was almost surely set by your bad battery. This one won't be related to the symptoms you are having and is just informational in most cases.
OBD II Code P0700 sets in the engine controller when there is a code stored in the trans controller. This one is just informational and tells you to read the trans codes.
OBD II Code P0876 is for the performance of the underdrive clutch pressure switch. The pressure switches close when there is fluid in the respective circuits. This code is going to be related to your symptoms.
Your Vehicles Exact Problem?
Most likely its just seems a filter issue. What often happened on these is a bad cooler filter caused fluid drainback while sitting, which in turn will cause the sump filter to split or even pop out of the pump. When this happens then there is no line pressure because it sucks air rather than fluid and the trans can't engage. It will set pressure switch codes because there is no fluid pressure in the circuits when the solenoids apply clutches.
Failed Accumulator Cover
It's possible that the accumulator cover on the right side of the valve body has failed, but it's more likely a filter issue.
Inspect Sump Filter:
The first thing I would recommend is dropping the pan and inspecting the sump filter. I believe you will find the filter has either split or popped down out of the seal that holds it into the pump.
Delay Going Into reverse:
The delay going into reverse is due to bad cooler filter, this is caused by loss of prime and loss of prime is what splits or pops the sump filter out. So this all is related to each other.
Using Branded Parts,Instead Of Aftermarket Parts:
I'm still seeing problems with aftermarket filters causing this but the Mopar filters have been clean for many years. I wouldn't recommend aftermarket filters in this trans.Go for branded parts.
Its Not Electrical Part Failure:
The problem is definitely hydraulic rather than electrical. Even in the event of complete electrical failure the trans will still have third gear and reverse. An electrical issue can't cause the symptoms you are having.
Symptoms Of Faulty Filter:
Revving the engine that high is pulling some fluid through the filter. The filter is either split or partially popped down out of the seal; it's possible there could be a pump issue but it's not likely. Don't rev it up to try to drive it like that though, It can cause clutch damage.
2006 Dodge Durango Vehicle Transmission Details:
The governor pressure solenoid and transducer were used in the Torqueflite transmissions, you have a 545RFE.
Problem Due To Sump Filter Failure:
You have all the perfect symptoms of a sump filter issue. You have no line pressure at idle and the underdrive pressure switch isn't closing, and you had delayed engagement leading up to it which is a sure sign of a filter issue. Other possibilities for such problem can be pump or clutch issue, but the probability of a filter issue is almost confirmed.
As Per Our Auto Garage Repair Experience:
We have seen lots of dodge with same issues.
It's definitely possible that it had a bad cooler filter on it from the factory. There were thousands of bad cooler filters out there and it was subject to a TSB and a recall. I've seen problems with ones that weren't involved in the recall, TSB or build date range also.
The fact that revving it allows it to engage tells us that most likely it's sucking air. It could be a pump or clutch issue but it's very likely sucking air.
If the sump filter popped out of the pump completely then it wouldn't engage at all, but if the filter has a split seam or it is sucking air around the seal then it will cause such problem as described in the question.
If replacing the filters doesn't help then the most likely cause is the pump itself if line pressure is low.
First of all the engine shouldn't die from a bad battery alone as long as the charging system still working.
The engine died because the torque converter clutch was dragging from low line pressure.
Possibilities for this is failure of the pump or any trans part to fail suddenly.
Priming the Pump
Raising the RPM's will help to build prime and suck fluid from the pan, once fluid is flowing, although aerated, it may stay engaged.
Other than filter issue it's possible that a bad pump or sticking valve in the pump valve body could cause the delayed engagement. It's very unlikely that this pump would fail in a way to cause delayed engagement, and it's uncommon for the valve to stick and cause delayed engagement, but possible. Replacing the pump would be the repair either way.
Why The Vehicle Dies:
If the torque converter clutch drags at low speeds or when stopped then it will kill the engine. This is a common thing to happen on this trans when low on fluid or line pressure drops. This is most likely why it died.
Working Of Pressure Switch:
Pressure switches close when there is fluid applied to a clutch circuit. On 06 dodge durango vehicle pressure switch code setting for the underdrive clutch, meaning that there is no pressure there when the solenoid is turned on. Pressure switches are feedback to the trans controller rather than outputs that create action.
Reason For Loss Of Line Pressure:
The only things that can cause a loss of line pressure are low fluid, a sump filter issue, or the pump. If the problem is just in the underdrive clutch then that opens up other possibilities, but if the fluid isn't burnt then it's not likely a slipping clutch.
Working Of Underdrive Clutch:
The underdrive clutch is used for forward and reverse. It's used for reverse, first, second, second prime and third.
2006 Dodge Durango Has Solenoid Pack:
As previously mentioned above there is no governor transducer or solenoid on this trans. There is the solenoid pack on top the valve body that contains shift solenoids but the problem is hydraulic. An electrical issue couldn't cause the trans to not engage.
It's building prime once you get to the 2,000 RPM area. It's not likely to be the pump, most likely it's sucking air at the sump filter or it's seal.
This Details Will Help.
Thanks.
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OVER:
