G2 Transmission Solenoid Screen & Valve Body Cleaning?

Smalltalk · 05-09-08, 08:55 PM

Would anyone have advice about removing & cleaning the automatic transmission valve body and solenoids on a G2 Legend? I'm getting some shift-flare during the 3-4 shift. So far, it only flares the first time upon a cold start. It seems OK after it warms up (though I've been driving it very gently). It's been doing this for about a year - most noticieable in the cold weather.

I'm wondering if the shift valves are gummed-up, or if dirty solenoid screens are limiting the pressure. I recently added 6oz of Auto-RX and drove 1,000 miles, but I'm not seeing any change yet. I ordered parts to rebuild the Valve Body - some O-rings, solenoid screens, checkballs, a new filter/screen, pan gasket, and fluid (ATF-Z1). I plan to separate the Main Valve body from the Secondary valve body to change the screens between them. I have the Acura shop manual. I'm a competent shade-tree mechanic. I have all the tools. But it'll be the first time I've ever opened an automatic transmission.

I wondered if I could test for gummed valves (vs. bad clutch packs) via a full throttle acceleration thru the 3-4 shift (while warm). If the clutch packs are bad, I'm thinking it will flare even when warm, whereas gummy valves might loosen up? Just a thought.

Vehicle History: The trans has 130K. I'm the second owner, and I believe the first owner was gentle on the car. But she didn't change the transmission fluid in the 92K miles before I bought it - so the fluid was getting dark. It didn't smell too bad, but I can imagine old fluid could lead to sticky valves or clogged screens. I did the 4x fluid change when I first bought the car.

Any thoughts / suggestions? Thanks.

fuzzy2k3 · 05-09-08, 10:00 PM

Im keeping my eyes on this as well, my transmission slips 3rd to 4th as well. Emptied a bottle of lucas transmission but doesnt feel like it did anything.

Smalltalk · 05-10-08, 10:01 PM

Still hoping for some good feedback or advice...thanks

fuzzy2k3 · 05-14-08, 01:45 AM

I noticed one thing, my transmission doesnt slip from 3rd to 4th if I move it from D3 to D4. not sure why that is

bschukkink · 05-14-08, 05:35 AM

Hello,

I cleaned the valve body, and the complete transmission! there was a lot of gum in there!
It's not so hard to do, I can send you some pics if you want.
Now it shift like a knife through butter!
It was also my first time, that i opend a transmission, just take your time and take pictures!
You can ask me questions, but my english is not so good! but i will try to help you!
Good luck

05-09-08, 08:55 PM	#1 (permalink)
Smalltalk Registered User Join Date: Apr 2007 Location: New Jersey Posts: 8 Car 1: 1995 Acura Legend iTrader: (0)	G2 Transmission Solenoid Screen & Valve Body Cleaning? Would anyone have advice about removing & cleaning the automatic transmission valve body and solenoids on a G2 Legend? I'm getting some shift-flare during the 3-4 shift. So far, it only flares the first time upon a cold start. It seems OK after it warms up (though I've been driving it very gently). It's been doing this for about a year - most noticieable in the cold weather. I'm wondering if the shift valves are gummed-up, or if dirty solenoid screens are limiting the pressure. I recently added 6oz of Auto-RX and drove 1,000 miles, but I'm not seeing any change yet. I ordered parts to rebuild the Valve Body - some O-rings, solenoid screens, checkballs, a new filter/screen, pan gasket, and fluid (ATF-Z1). I plan to separate the Main Valve body from the Secondary valve body to change the screens between them. I have the Acura shop manual. I'm a competent shade-tree mechanic. I have all the tools. But it'll be the first time I've ever opened an automatic transmission. I wondered if I could test for gummed valves (vs. bad clutch packs) via a full throttle acceleration thru the 3-4 shift (while warm). If the clutch packs are bad, I'm thinking it will flare even when warm, whereas gummy valves might loosen up? Just a thought. Vehicle History: The trans has 130K. I'm the second owner, and I believe the first owner was gentle on the car. But she didn't change the transmission fluid in the 92K miles before I bought it - so the fluid was getting dark. It didn't smell too bad, but I can imagine old fluid could lead to sticky valves or clogged screens. I did the 4x fluid change when I first bought the car. Any thoughts / suggestions? Thanks. Last edited by Smalltalk : 05-10-08 at 09:57 PM.

05-10-08, 10:01 PM	#3 (permalink)
Smalltalk Registered User Join Date: Apr 2007 Location: New Jersey Posts: 8 Car 1: 1995 Acura Legend iTrader: (0)	bumb Still hoping for some good feedback or advice...thanks

Thread Tools
Show Printable Version Email this Page
Display Modes	Rate This Thread
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode	Rate This Thread:

Remove Advertisements Sponsored Links
The Acura Legend & Acura RL Forum Advertisement

05-09-08, 10:00 PM	#2 (permalink)
fuzzy2k3 Registered User Join Date: Mar 2008 Location: Toronto Posts: 82 iTrader: (0)	Im keeping my eyes on this as well, my transmission slips 3rd to 4th as well. Emptied a bottle of lucas transmission but doesnt feel like it did anything.

05-14-08, 01:45 AM	#4 (permalink)
fuzzy2k3 Registered User Join Date: Mar 2008 Location: Toronto Posts: 82 iTrader: (0)	I noticed one thing, my transmission doesnt slip from 3rd to 4th if I move it from D3 to D4. not sure why that is

05-14-08, 05:35 AM	#5 (permalink)
bschukkink Registered User Join Date: Mar 2004 Location: netherlands Posts: 19 Car 1: Legend GS sedan 1995 Car 2: Accord coupe 3.0 v6 iTrader: (0)	Hello, I cleaned the valve body, and the complete transmission! there was a lot of gum in there! It's not so hard to do, I can send you some pics if you want. Now it shift like a knife through butter! It was also my first time, that i opend a transmission, just take your time and take pictures! You can ask me questions, but my english is not so good! but i will try to help you! Good luck

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)