Cold Air Intake and Transmission solenoid clean detail
The idea is to get a constant supply of cold air.
There is a 3" hole next to the battery behind the headlight that goes into a seperate compartment.
The following information was provided by a Mr. Smith from the acura-legend.com forums. It is very beneficial to do this procedure to your automatic first generation legend transmission. My results were amazing to the point that it felt like a new transmission!! I highly recommend it. The cost for the replacement gaskets is about $50 at your Acura dealer ONLY. To clean the solenoids use carb cleaner or brake cleaner.
1. Disconnect and remove battery and plastic spill tray (if present).
2. Remove air cleaner box (two hold down bolts, plus one more bolt that holds a cable tie, loosen the clamps on the air intake and outlet, and slide the box up and out).
3. Remove the air-cleaner to throttle-body hose simply to allow easier access to the solenoids.
4. Remove Solenoids They are a set of four cylinders directly mounted to the transmission, usually held in by 6 bolts, two of which are longer, to fit through guide sleeves. Unplug the solenoids from their connectors, and remove them.
5. Clean Solenoids use brake cleaner, or some suitable parts washer fluid to remove any external grease, and then lay them out on the a lint free cloth on flat concrete.
6. Remove Sealing Rings & Screens (I recommend replacement)- carefully pry the rubber sealing ring and screens out of the solenoids. Clean out these screens carefully with brake cleaner, and set them aside. (You can leave the screens in the seals.)
7. Test Solenoids - Utilizing a 12v DC Power Source, attach the negative lead to the metal body of the solenoid. Tap-touch positive lead to lead of one of the solenoids. A normally functioning solenoid will produce a Click sound - if you get a spark, but not a solid click, then the solenoid is sticking.
8. Clean Solenoids in a parts washer, with the flat side down, firmly tap the solenoid set on cleaning surface area. Set the solenoid with the holes facing up, and activate them while spraying cleaning solution into the holes. The action of the solenoids can be tested by moving cleaning solution THRU the solenoid while powered-up. Use caution not to break any internal coil wires.
9. Repeat for Each Solenoid - continue the process of flushing, tapping, and activating until you get solid clicks from all four solenoids. If you are getting a spark where you touch the lead, but no click, and no fluid goes through the holes, it may be necessary to rasp them against a hard surface. If no spark is produced during an electrical connection to 12v DC power source, it is possible the wire is open shorted.
10. Replace Sealing Ring and Screens if necessary, use a silicon-based non-hardening o-ring sealant, and reassemble.
11. Install Solenoids into Transmission the reverse of procedures #1 thru 4
12. Test Drive Vehicle engage each gear in each shifter position, including any sport-level options, if applicable.
View of solenoids removed and cleaned.
View of solenoid location after battery removed and lower radiator hose pushed out of way.
