Need some help with my power valves

S

Scootertrash

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OK, so I've read thru the threads on this and I still am a tad bit confused (it's normal, ask my wife).
2000 SRX700
Sled was rebuilt by me. Owner (not me) Blew multiple head gaskets last winter, toasted the pistons, ruined a couple of valve cables, blew the coolant bottle cap off and melted the coolant manifold valve for the carbs.
I rebuilt the sled and want to adjust the power valves.
First I tried the idle down method, since my tach only goes to 1000, i idled it down significantly past that until it bottomed out in the guage.
I notice no movement of the servo pulley.

Wanting to make sure the valves were in the proper position, I thought I'd hook a 12v volt battery to the diagnostic connection, but I want to make sure I have the correct one.
The connection I was going to use is a white, triangle shaped connection with only 2 wires going to it-1 Black and 1 red. It does have provisions for a third wire, but there is not one there.

Is this the proper connector?

If I don't get any movement out of the servo, is there any other tests I can do to ensure the servo is good?

Thank You Gents!!
Have a great Day!
 
Sounds like an awful lot of problems for 1 winter. Don't want to insult your skills but, is the connector closed tightly and making good contact? Check all the stupid/obvious stuff first. How bout 1 or more stuck or jammed powervalves? Beyond that, sounds to me like the servo might be fried. You do not have to have it in "home" position to tell that. With the engine running, you can rev it and the servo should move as the engine goes through the rev range. If it does not move at all, start looking for a new servo. Or worst case, a bad ecm. To narrow down the source of the problems, connect the servo to 12 volts as you already suggested. You can either buy a harness or make one yourself by looking in the tech section for the instructions for a homemade harness/connector. If it moves, then there may be a problem with the ecm itself. At this point I believe the servo motor is suspect.

And yes, the connector u described is the correct one. Its right behind the servo. Good Luck!
 
Thanks Macheater!
No insult taken, that's why I ask questions, sometimes it nice to have an outside influence to make sure I didn't forget something or screw something up. ;) I'm kinda new to this powervalve thing also.

Plug is snugly connected and the tab is locked in

Power valves were cleaned during the rebuild (bought some good used ones to replace the bad ones) and moved freely in their slot during assembly.

I saw no motion of the servo pulley when I was revving the machine. I kinda figgered the motor was shot. I will try hooking 12 volts to it and see if it moves.

2 of the old power valves had pulled the cable thru the valve stem. Just a guess, but I think he heated this thing up so good that the valves bound up hence the pull thrus, which may have fried the servo motor trying to work the valves.

I was not with him when it happened, so all I have to go on is what he told me.

Thanks again!
 
Just thought of something else. I do not have my shop manual with me at the moment so I am just specualting on this one. Maybe that servo is fused and it popped the fuse if it was pulling hard against the valves. Will check the shop manual schematic tommorow and let you know if there is a fuse and where to find it if so equipped.

Maybe somebody else will chime in on that one.
 
JUst wanted to say "Thanks!" and update the thread:
Hooking 12 volts to the servo made it reset (or whatever) so I'm good to go. Valves are adjusted and ready to go!
Thanks to Macheater and YA*MA*A*HEAD for helping me out.
YA*MA- I'll be in touch about those valves in a week or two. ;)
 
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