expected data 46RE governor pressure solenoid/sensor

[2***@bellsouth.net]

2000 Dodge 1500 conversion van with 5.2L 46RE 3.55 and 96k miles

Typical 46RE shifting symptoms..
jumps between 1-2 when shifting from 1 to 2
holds the 1-2 shift and 2-3 shift (will hold the 2-3 shift very long,
I usually let off the gas until it shifts)
engine will sometimes 'flare' during shift, will rev up until shift is
complete.
shifts feel 'soft'

using a Snap-On Modis scanner, looking at

desired gov pressure
actual gov pressure
governor duty cycle
pressure sensor voltage

** readings**

pressure sensor voltage stays around 0.45v - doesn't change (this
might be a failure of the scan tool to read)

desired & actual gov pressure stay pretty equal through 1st and 2nd
gear, governor duty cycle is around 25-30

When it shifts into 3rd gear, the desired gov pressure reads 127psi,
the actual runs from 40-70psi depending on road speed (goes up as road
speed increases) and duty cycle goes to 1. To me, it sounds like the
PCM is asking for more pressure, the governor solenoid goes to full
open, but can't attain desired pressure. Desired pressure also seems
high.. over 100psi?

My plans are to measure some pressures, check for good power and
grounds, drop the pan, change the filter, pull the governor solenoid
and look at the screens for trash. Adjust the bands and see what
happens.

Anyone have any thoughts?

Jim

[2***@bellsouth.net]

Also.. no trouble codes.

Jim

[John Kunkel]

Post by 2***@bellsouth.net
2000 Dodge 1500 conversion van with 5.2L 46RE 3.55 and 96k miles
Typical 46RE shifting symptoms..
jumps between 1-2 when shifting from 1 to 2
holds the 1-2 shift and 2-3 shift (will hold the 2-3 shift very long,
I usually let off the gas until it shifts)
engine will sometimes 'flare' during shift, will rev up until shift is
complete.
shifts feel 'soft'

SNIP

Post by 2***@bellsouth.net
My plans are to measure some pressures, check for good power and
grounds, drop the pan, change the filter, pull the governor solenoid
and look at the screens for trash. Adjust the bands and see what
happens.

Has the trans ever been serviced? Clogged filter and band adjustment along
with faulty front clutch seals could cause the symptoms noted.

[2***@bellsouth.net]

Post by John Kunkel

Post by 2***@bellsouth.net
2000 Dodge 1500 conversion van with 5.2L 46RE 3.55 and 96k miles
Typical 46RE shifting symptoms..
jumps between 1-2 when shifting from 1 to 2
holds the 1-2 shift and 2-3 shift (will hold the 2-3 shift very long,
I usually let off the gas until it shifts)
engine will sometimes 'flare' during shift, will rev up until shift is
complete.
shifts feel 'soft'

SNIP

Post by 2***@bellsouth.net
My plans are to measure some pressures, check for good power and
grounds, drop the pan, change the filter, pull the governor solenoid
and look at the screens for trash. Adjust the bands and see what
happens.

Has the trans ever been serviced? Clogged filter and band adjustment along
with faulty front clutch seals could cause the symptoms noted.

Just bought the van; no service records available. It _does_ feel like
it could be a symptom of long overdue servicing needed.. that's why I
was going to do that first before dropping $150 into solenoid and
sensor. Thanks for the response..

Jim

[2***@bellsouth.net]

2000 Dodge 1500 conversion van with 5.2L46RE3.55 and 96k miles
Typical46REshifting symptoms..
jumps between 1-2 when shifting from 1 to 2
holds the 1-2 shift and 2-3 shift (will hold the 2-3 shift very long,
I usually let off the gas until it shifts)
engine will sometimes 'flare' during shift, will rev up until shift is
complete.
shifts feel 'soft'

SNIP

My plans are to measure some pressures, check for good power and
grounds, drop the pan, change the filter, pull the governor solenoid
and look at the screens for trash. Adjust the bands and see what
happens.

Has the trans ever been serviced? Clogged filter andbandadjustmentalong
with faulty front clutch seals could cause the symptoms noted.

Did the trans service Saturday.. dropped the pan, new filter,
adjusted the bands. Seems to shift 'correctly' now.. I'll drive it
some more and see what happens. I also plan to put it back on the
scanner and see what the data looks like.

While I was working on it, a guy who does some trans work in the area
saw my printout on adjusting the bands.. told me to forget about what
it said; that he just sticks a screwdriver up into the rear adjuster
to hold it tight and adjusts the adjuster 1/4 turn loose.

I chose to follow the factory adjustments..<grin>

Jim