When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Hello! I'm brand new here. I recently bought a 2001 CL that I really like! Yesterday I was servicing the automatic transmission - fluid and inline filter change. While doing so I just happened to notice this sensor or solenoid on the back of the trans case that wasn't plugged in. It was dirty and looks like it hasn't been plugged in for quite a while. There are no dangling plugs or loose wires anywhere. The car is 100% stock with zero mods. The Acura parts lookup simply calls it a solenoid (28400-P6H-013 SOLENOID ASSY. (A) (KEIHIN)). I have no warning lights, the transmission shifts and operates properly. The cruise control works. I have no idea what this is! Attached is a picture. Any help would be appreciated. Thanks!!
Ya know, I don't think I've ever tried it in manual mode. I'm most frustrated by the fact that I cannot see, feel or find a plug that goes onto the solenoid. If I could find a plug for it, I'd plug it in and see how the car reacts.
In addition to the picture I just uploaded, I think I found the part on the Acuraoemparts.com. It appears to be the speed sensor. 28810-P7W-004 PICK-UP ASSY. Question is, why isn't it plugged in with no wire or plug in the area. Hmmm...
2. There's no radiator hose at the back of the trans.
I'm done with this thread.
No good deed goes unpunished, eh? Thanks for your help but the only thing 'not right here' is that I called the pick-up a sensor. The part number is correct and the image I provided with the red circle is correct. And it's not a radiator hose, it's a heater hose. It looks big in the picture but it's standard small heater hose.
Your help is appreciated but saying I'm FUBR and being done with it because *you* can't figure it out is kinda weak.
It's all good. I'm new here and probably shouldn't be asking for help.
When I find out exactly what's going on, I'll update this thread.
I had the dealer look at the car. Indeed, the the part in question is a Vehicle Speed Sensor. However, my car does not use a mechanical speed sensor (it uses electronic signals at the PCM).
This model of transmission was used in several Honda and Acura vehicles and in this case since the transmission was replaced a few years ago by the previous owner, this explains why the sensor is there but no corresponding electrical connector to plug onto it. This transmission came from a different vehicle model that uses a mechanical speed sensor.
Thanks to those who offered up advice and opinions!