Re: Continuing on the Overdrive

Posted by HH56 On 2009/8/28 10:58:06

Glad things looking up. As long as the hold coil is keeping the plunger out, lower voltage is not an issue at term 3 as you are taking the reading at a point somewhere toward the midpoint of two coils in series.

The relay contact should not be closed with it out of the car so there is either something sticky holding, a bind of some type, the spring is weak, or some residual magnetism in the core which may be a stretch. Checking one I have, it snaps right out.

There are ways to demagnetize if that is reason but not sure of best approach in this case--relay cores don't normally magnetize. Maybe Bob1951 would have some ideas.

Check the other causes and then would try in car first and see if once in motion it causes a problem. It may bounce open with movement which would be great. If it does not & continues to stick would be an issue only if solenoid binds or for some reason prevents that ground out or kill contact inside to not open. Then it would cause engine to stall if it stays closed.