Delay Shifting into Drive

[BrooklynBay]

I was referring to the EPC solenoid.

 

[BrooklynBay]

You might want to consider a new boost valve such as one of these:
http://www.transmissionpartsusa.com/4R44E_5R55E_boost_valve_sleeve_kit_p/400-03794703k.htm
http://www.transmissionpartsusa.com/4R44E_5R55E_boost_valve_sleeve_kit_p/400-03794701k.htm
The first part is a high ratio, and the second one is the OEM ratio.

 

[jmacclure]

Thank you

for all of the info.

 

[jmacclure]

Ratio

If I haven't been having any issues with reverse, should i stick with the OEM ratio?

 

[BrooklynBay]

The higher ratio boost valve is for more overall pressure, not just for reverse. You could feel a firmer engagement with that one. The other one is for a softer engagement which isn't felt as much.

 

[jmacclure]

While I'm in there, is there any reason to replace any of the other solenoids besides the EPC?

 

[BrooklynBay]

The TCC is also modulated like the EPC, so both are considered high wear parts. From looking at solenoids that have high failure rates, most people on here have had trouble with the EPC, so maybe just start with this one.

 

[Glacier991]

I got your PM, and the EPC is the only solenoid that I would be likely to change. The only shift solenoid in use in 1st gear is SSA (or SS1) but it is also on in 2nd.... so it is probably ok. I think you have the idea of what I'd recommend. You COULD also have a spool hanging up... a thorough VB rebuild/cleaning as recommended ought to help you.

I might add a 20 degree driveway can drain the fluid out of parts that need to be refilled before they become functional. A thought.

pps. Thank you again for using a pressure gauge. THAT info in invaluable. Try accessing the EPC port and let us know what you get.