Cold Weather Starting problem, relay ok

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Oct 19, 2009 | 11:47 PM

spotteddog

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From: Colorado Springs

Cold Weather Starting problem, relay ok

I have had a couple mornings of problem starts when I left my truck out (just in the 30's). I checked the relay and there is juice to both sides (didn't check voltage tho). I just checked the wire harnesses and all the glow plug pins read below 1 ohm.

I'm going to change the oil tomorrow ( has 6,000 miles on synth Rotella). Any other ideas? Is there a separate test for glow plugs other than checking the resistance?

Thanks in advance...

Oct 20, 2009 | 12:21 AM

87 F-150 I6

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From: Parker, CO

I know you said that you checked the GPR, but even a bad one will put voltage out. I would check it out first before doing any thing else.

Oct 20, 2009 | 05:24 AM

dn29626

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From: South Carolina

Engine turning without firing?

Oct 20, 2009 | 09:08 AM

spotteddog

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From: Colorado Springs

Yup, the engine turns, and turns and turns. Once in a while I get a little catch, and then back to turning over. I get white smoke when it catches and when it finally starts, usually after about 6 or 8 tries.

I'm going to order a stancor relay. The one I have on is from NAPA and only a year old but is probably the issue since glow plugs test ok.

Oct 20, 2009 | 09:31 AM

just another truck

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From: Sterling Heights,Mi

Take a meter accross the leads ( large ). Look for a voltage difference. I HAD a working relay once, but half of the contact internal was busted, so it was loading up bad and not heating anything.