Pagoda SL Group

W113 Pagoda SL Group => General Discussion => Topic started by: twinoakchef on August 31, 2018, 15:11:12

Title: Testing a Solenoid
Post by: twinoakchef on August 31, 2018, 15:11:12

How is a stater solenoid tested? I want to find out if the solenoid is good or on the edge of failing.

Title: Re: Testing a Solenoid
Post by: ejboyd5 on September 01, 2018, 13:04:48

This question has been asked and answered elsewhere:
http://www.peachparts.com/shopforum/vintage-mercedes-forum/394909-testing-solenoid.html

Title: Re: Testing a Solenoid
Post by: twinoakchef on September 01, 2018, 23:30:58

No it has not.

Title: Re: Testing a Solenoid
Post by: Shvegel on September 04, 2018, 23:08:22

Best way would be to do voltage drop test across the solenoid.  Connect a voltmeter between the two large terminals of the starter and have someone hit the key.  Anything more than 1/2 a volt with the starter turning the engine and the contacts are bad.  This is a good test you can use to find bad grounds etc because it checks how good the contacts are under a load.  It works well for things like battery cables etc.  You can measure voltage between the negative battery terminal and the engine block during cranking or between the positive terminal of the battery and the post on the starter to check the integrity of the positive cable.