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Old 12-07-2007, 11:09 AM
nhdoc nhdoc is offline
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Join Date: Dec 2004
Location: Nashua, NH
Posts: 3,956
Quote:
Originally Posted by bpeters2 View Post
I tested the voltage at the glow plug tip (wire still connected to glow plug) and it was only 9 v. I also tested the voltage coming out of the glow plug relay (tested all 5 male probes) and it was 12v. Both of these tests were conducted when the glow plugs were being activated. Does the fact the voltage seems to drop at the glow plug mean anything.

Did you do these two tests from the same ground point? If not do it again and use the same ground...go right to the negative of the battery would be my suggestion.

You may have a bad engine gorund too..check the strap which grounds the engine to the chassis to make sure it is intact and in good shape without corrosion under it.
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