powermaster stays on.

[Eric Stauch]

hey guys i got an 87 gn and the powermaster motor keeps running even with the key off! i gotta disconnect the battery jus to get it to stop. any suggestions? thanks guys!

 

[aminga]

Where in alabama? Close enough to for someone to look at it?

The diagnostic test is at

Powermaster Diagnostics

Follow the tree

 

[turbofish38]

I've seen that more than a few times. Good chance one of the O-rings on a piston is causing an internal leak which is really bad news. The only cure is to replace to PM with a Reman'd unit as nobody sells just the seal kit seperately to rebuild them.

 

[Eric Stauch]

plan B

im located in Hartselle. bout 30min south of huntsville and 45min north of birmingham. leaky seals huh? nevermind that jus bought a new vacuum set up. thanks for the info though!

 

[bsdlinux]

I've had 3 TRs 2 of which had recurring PM problems. Those 2 cars have vacuum on them now and never looked back. Don't waste your money on the PM system unless you just have to keep you car completely stock

 

[aminga]

I've seen that more than a few times. Good chance one of the O-rings on a piston is causing an internal leak which is really bad news. The only cure is to replace to PM with a Reman'd unit as nobody sells just the seal kit seperately to rebuild them.

Aren't they just standard o-rings.

 

[aminga]

im located in Hartselle. bout 30min south of huntsville and 45min north of birmingham. leaky seals huh? nevermind that jus bought a new vacuum set up. thanks for the info though!

I hartsell I'm just down 36

 

[aminga]

Eric,

I went back and read your post the thing that bugs me is the running with the key off. PM shouldn't have power with the key off

 

[zeus87gn]

If you P/M is running with the key off, the relay is stuck closed.
As the relay is built into the motor, and are not servicable, you're into a new motor.

 

[turboskye]

powermaster brakes

I installed the vacuum brake conversion on my 87 regal about 7 years ago,
has been trouble free ever since!

 

[turbo nasty]

Vac here as well. PM is just too expensive at least for me. I figured it up and the PM cost me well over 700 bucks in 3 years after I rebuilt it, new sw, new accum, new pump and then 3 years later the switch needed replacing again and that was gonna be another 150.