92 7.3 help

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Nov 23, 2004 | 05:57 PM

warren1994

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92 7.3 help

I turn the switch,wts light came on then went off as usual,but..............the glow plugs didn't cycle,would not start.This is the 2nd time it happened. Any ideas?

Nov 23, 2004 | 06:01 PM

nogo73

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From: San Antonio

The glowplug controller maybe going out or your glow plugs are bad or gp wires maybe disconnected.

Nov 23, 2004 | 06:02 PM

motovert2001

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Mabee a new relay.

Nov 23, 2004 | 06:05 PM

PLC7.3

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From: Manitoba

Check all the GPs for condition with a test light, clamp to positive battery terminal and probe to bullet tip of GP (bullet connector removed) if it lights then consider it good.

Replace GPs with Beru/Motorcraft only..........if more than 1-2 do the whole set 8 or they will continue to burn out one at a time.

Nov 23, 2004 | 06:25 PM

pnose

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From: newfoundland canada

Check and clean the ground on the controller.

Nov 23, 2004 | 06:52 PM

warren1994

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Is there a differance between the relay and a controller, or are they one in the same?

Nov 23, 2004 | 07:00 PM

pnose

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From: newfoundland canada

The relay sits on top of the controller and if it goes it can be replaced seperatly.

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Nov 29, 2004 | 09:01 PM

PLC7.3

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From: Manitoba

If you can find a Haynes Diesel engine repair manual 10330 it has a controller test in it.

Nov 29, 2004 | 09:09 PM

#10

Jorday

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I had similar problems with my truck. Ended up having at least 3 bad glow plugs-they were champions. I also had one glow plug that was testing as good but was not heating properly. If you don't have motorcraft plugs in it now, I would replace them all with motorcraft plugs. If wait to start doesn't stay on for around 10 seconds on cold startup this may indicate at least one bad glow plug. My truck went from barely starting in 60 degree weather to starting perfectly on 30 degree mornings.

Last edited by Jorday; Nov 29, 2004 at 09:12 PM.