Aaaaarrrrrrgggghhhh!!! Please tell me I haven't REALLY blown it. - Page 5 - PeachParts Mercedes-Benz Forum

300DPETE · #61 12-12-2005, 10:56 AM

Quote:

Originally Posted by P.E.Haiges

300DPETE,

Shorted wire or open? Shorted wire would have melted the fuse in the GP relay. Open wire would just not conduct current to that GP and it wouldn't have glowed.

Are you going to replace your muffler, rings, bearings, IP, ETC? I heard that if you replace all these parts and others every 2 years, it keeps them in top shape. But it also costs a lot of money for a very small return on investment.

Why should GP be any different? If the engine starts easily, the GP are doing their job and don't need to be replaced. Throw the new spares in the glove box so you will have a spare if one ever burns out.

P E H

The wire was charred black all the way from the plug to within 1/2 inch of the relay plug. I connected a new wire to the 1/2 inch remaining at the plug. After that, the yellow light on the dash worked again (wasn't lighting up previously).

Pete.

P.E.Haiges · #62 12-12-2005, 11:14 AM

300DPETE,

That fried wire sound like it was caused by a shorted GP. Usually the failure more of a GP is to burn out I.E. open circuit, but shorts do happen.

I had a loop style GP short to ground once. There was no fuse in the 220D GP circuit. The wires got kinda melted but were still useable. That shorted GP drew so much current, the starter barely cranked the engine. I didn't have a spare GP so I had to wire around the shorted GP to get the engine started.

I'm surprised the fuse in your GP relay didn't burn out since when that GP was drawing the extra current, the other GP were also drawing current.

P E H

300DPETE · #63 12-12-2005, 12:09 PM

Quote:

Originally Posted by P.E.Haiges

300DPETE,

That fried wire sound like it was caused by a shorted GP. Usually the failure more of a GP is to burn out I.E. open circuit, but shorts do happen.

I had a loop style GP short to ground once. There was no fuse in the 220D GP circuit. The wires got kinda melted but were still useable. That shorted GP drew so much current, the starter barely cranked the engine. I didn't have a spare GP so I had to wire around the shorted GP to get the engine started.

I'm surprised the fuse in your GP relay didn't burn out since when that GP was drawing the extra current, the other GP were also drawing current.

P E H

I got lucky, the fried portion of the wire stopped just before the relay plug.