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  #1  
Old 12-30-2008, 10:31 PM
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Join Date: Jun 2006
Location: Southeast
Posts: 1,952
Over my head

Quote:
Originally Posted by sixto View Post
I think we established in another thread that your relay has a circuit breaker, no fusible link.

Can you check voltage at each glow plug terminal while glowing?

Can you attach an ammeter to the big red wire into the relay? You should see 40-60 amps while glowing.

Feed +12V to the black wire in the small relay connector (disconnected from the relay!) and see if the glow light comes on.

Sixto
87 300D
When he was talking about the fusible link, I didn't know what that was, but I see what you mean now.

We tested when the relay kicked in, that each glow plug (measuring from inside the 5 holes on the pin switch in the relay box area) and we got something like 12.69 or 13.69 or something, to each plug, straight across.

I'll try the big red wire in a few minutes, see what I get. I'm guessing I have to hook the black wire of my tester to the negative battery, and the red to the red wire on the relay?

I don't know how to feed 12v into the black wire.

jeff

Last edited by jbach36; 12-30-2008 at 10:35 PM. Reason: wrong
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  #2  
Old 12-30-2008, 10:45 PM
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Join Date: Jun 2006
Location: Southeast
Posts: 1,952
I tried that, but ....

I tried hooking up my multimeter, black wire to the battery, red to the relay, and really didn't see any numbers come up. I tried DC amps at first, then
dc v, then ohm. Pretty much flat lined.

I must have done something wrong, because before I changed the glow plugs, the car would at least start. According to one member, if all the glow plugs are out, the car is near impossible to start. Being that it could start, though a bit rough, he reasoned that at least a few of the plugs were glowing, even though the light on the dash wasn't coming on.

But now that I changed the plugs, the car is reluctant to start. It cranks, but that's about it.

What now?

jeff

Last edited by jbach36; 12-30-2008 at 11:00 PM. Reason: wrong
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