2 second delay shifting from park to drive
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From: Lewis lake
2 second delay shifting from park to drive
Just picked up a beautiful 07 3.0 auto 2wd
when shifting from park to a forward gear like drive or l1 there is a 2 to 3 second delay before CLUNK into gear.
it does have 200k and fluid is dark but not burnt. Drives and shifts a1
when shifting from park to a forward gear like drive or l1 there is a 2 to 3 second delay before CLUNK into gear.
it does have 200k and fluid is dark but not burnt. Drives and shifts a1
Welcome to the forum
Does it engage quicker if you raise engine RPMs?
Most likely issue is low pressure
All automatics run(engage and shift) based on ATF fluid pressure
100psi to go forward
150psi for Reverse
The Transmission pump spins at engine RPMs, so raising RPMs raises pump speed/pressure
Over time the gaskets and seals inside the valve body(the part that routes the fluid to engage and shift gears) starts to leak a bit so pressure goes down
These are all internal leaks, not outside leaks
Your Fluid needs to be changed, and filter, so pan has to come off
On the outside of transmission are two pressure test points, that a trans shop, or you, can use to test pressure with vehicle in gear(rear wheels off the ground)
This is done BEFORE changing trans fluid, because there is an EPC(electronic pressure control) solenoid inside the pan
The EPC can be adjusted to compensate for SMALL leaks, when pan is off
But pressure test FIRST to see if its a pressure issue
Info here: https://atracom.blob.core.windows.ne.../2003_5_50.pdf
Just so there is no confusion, your 2007 3.0l Ranger has a 5R44E model automatic transmission, which is exactly the same as the 5R55E or 4R55E or 4R44E, lol, as far as troubleshooting and most internal parts
Does it engage quicker if you raise engine RPMs?
Most likely issue is low pressure
All automatics run(engage and shift) based on ATF fluid pressure
100psi to go forward
150psi for Reverse
The Transmission pump spins at engine RPMs, so raising RPMs raises pump speed/pressure
Over time the gaskets and seals inside the valve body(the part that routes the fluid to engage and shift gears) starts to leak a bit so pressure goes down
These are all internal leaks, not outside leaks
Your Fluid needs to be changed, and filter, so pan has to come off
On the outside of transmission are two pressure test points, that a trans shop, or you, can use to test pressure with vehicle in gear(rear wheels off the ground)
This is done BEFORE changing trans fluid, because there is an EPC(electronic pressure control) solenoid inside the pan
The EPC can be adjusted to compensate for SMALL leaks, when pan is off
But pressure test FIRST to see if its a pressure issue
Info here: https://atracom.blob.core.windows.ne.../2003_5_50.pdf
Just so there is no confusion, your 2007 3.0l Ranger has a 5R44E model automatic transmission, which is exactly the same as the 5R55E or 4R55E or 4R44E, lol, as far as troubleshooting and most internal parts
Last edited by RonD; Oct 25, 2021 at 10:13 PM.
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Bhavesh
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Apr 29, 2007 07:04 PM
