Mechanics

TRANSMISSION O/D LIGHT FLASHING

2003 Ford Ranger • 4 cylinder 2WD Automatic • 164,000 miles

My transmission went out. I took it to a shop and they rebuilt it. They replaced the clutches, planetary /forward gears, seals, torque converter, OD solenoid, and they rebuilt the valve body.
After I picked the truck OD light started to flash when I go into over drive.
The OD light starts to flash from around 44-70 MPH.
The code resets itself each time I start up the truck.
Anyway I took it back to shop and they replaced the OD solenoid twice. They replaced the valve and checked the valve body. Now they are going to take the torque converter out and test it.
The code is P0741. O/D solenoid stuck
The shop told me that their going to tear the trans and check it again because they told me it could be a small seal causing this problem.
The truck is wasting gas more than the average amount.
My question is if any one has worked with this particular trans and has experienced this same type of problem.
I have searched online and it seems like a common problem but no direct answer.
What can be causing this OD solenoid to stay stuck? What other possibilities besides the common components can cause this problem?
Electrical? Re flashing? A small seal?
Note: The O/D light never came on before I took it to the shop until it went out on the highway in overdrive.
-The OD switch on the column works and I can feel it switch in and out each time I command it.
-The truck also never wasted too much gas before I got the trans rebuilt.
-As from 12/2/10 the truck is still at the shop. They have replaced the OD solenoid again, replaced the valve and checked the valve body. They also took out on the highway with the scanner and the same code came on. Now they are going to send the torque converter out to be tested and than they are going tear the trans apart.
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FordSux
December 11, 2010.



When the O/D indicator flashes, it indicates an error has been detected in the transmission system.

P0741 = TCC slippage detected.
Problem is with torque converter and not the OD solenoid. When the torque converter is slipping the fuel consumption would be greatly affected.

Do you have any other abnormal symptoms such as driveability and/or performance related concerns?


KHLow2008
Dec 14, 2010.
The converter checks ok. The trans shifts in and out fine.
I am thinking its VSS or the PCM needs to be reflashed because an up-shift kit was added with the rebuild?


Tiny
FordSux
Dec 14, 2010.
Could it be the valve itself inside the valve body?
Could the valve be restricted or the spring be weak?


Tiny
FordSux
Dec 14, 2010.
Problem may be generated by non-electric transmission hardware system so it is possible for valves to be bad or pressure leakages somewhere.

The torque converter is either not engaging or erratic. You would notice higher engine rpm at the same vehicle speed as compared to before the problem occurred.

The tables indicates possible causes of the problem.


KHLow2008
Dec 15, 2010.
The shop told me they never had a problem like this and they will not stop working on it until they find a problem. They told me as 12/14/10, their replacing the entire valve body and see if that fixes the problem. Is it true that the valve inside the valve body can't be replaced? Rather you have to replace the entire valve body itself? Have you ever experienced a problem like this? An good friend of mine said it could be the VSS Vehicle Speed Sensors or the PCM needs to be reflashed because of the shift kit that was added with the rebuild. The shop said if it was the VSS it would effect the shifting and PCM reflashing has nothing to do with the upshift kit. Is this true?


Tiny
FordSux
Dec 15, 2010.
When such problem occurs, the guys handling the job are going to have sleeples nights. This is one shop that I would not hesistate to recommend. They are true profesional dedicated to their work.

Valves are not recommended to be replaced individually as they would wear with their own characteristics and any introduction of new parts might not work correctly. Furthermore the valves do not have service parts, meaning they are not sold separately.

I have never encountered such problems and if it is the VSS, it would throw a separate code and have erratic shifting. The speedometer would alos work erratically.

Reflashing is required only if the shifts are erratic and I would agree with the shop that it has nothing to do with the upshift kits. I would diagnose it more of a mechanicla fault rather than electrical in this aspect.

Hope the valve body replacement resolves the problem.


KHLow2008
Dec 15, 2010.
They changed the valve body and took it out on the highway to test it but the truck died. They think the timing belt went out so their going to check it tomorrow and get it back running again so we can find out if the valve body will finally solve this problem. I am confident that this time the valve body will fix the problem.
Do you live in Malaysia? Are you a Muslim by any chance?


Tiny
FordSux
Dec 16, 2010.
Yes, I live in Malaysia but no I a not a Muslim. I am of ethnic Chinese origin.

Too bad one problem after another. Hope it is nothing serious.

Good luck.


KHLow2008
Dec 16, 2010.