Still having electrical problems!

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Oct 24, 2007 | 06:10 PM

#16

Lead Head

Lead Driver

Joined: Jul 2007

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From: Rhode Island

The truck's computer, if it has one, which I'm assuming it does, uses tiny bits of power, even with the key off. So they light would probably turn on, even with the key off. But since its an IDI, I'm not sure.

Your best bet would probably to go some place like sears, and look for a digital multimeter that can read DC amps and miliamps

Oct 24, 2007 | 06:12 PM

#17

Agemenon

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From: Edmonton, Alberta Canada

I have one...

Oct 24, 2007 | 06:35 PM

#18

starmilt

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From: Faibanks Ak.

your truck shouldn't have an ecm. but even if it did light wouldn't come on key off.

Oct 24, 2007 | 06:37 PM

#19

Agemenon

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From: Edmonton, Alberta Canada

k, well I'll go buy a test light tonight and get this done before it gets dark. I'll keep ya posted.

Oct 24, 2007 | 06:48 PM

#20

starmilt

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From: Faibanks Ak.

how are you starting it in the mornings battery charger jump start ect. if you unhook cables at night will it start like it is supposed to. how cold is it up there in the mornings.

Oct 24, 2007 | 07:48 PM

#21

Agemenon

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From: Edmonton, Alberta Canada

It has enough juice to carry it over the night and starts up fine the next day...ut by the second day, you can notice there theres some loss of power. I didn't end up getting to test out the fuse box, because when I came outta the store, it was dark and pissing rain...so I'll save that for tomorrow.

Oct 24, 2007 | 09:06 PM

#22

dwaymar

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look at the voltage reg also known to short out and cause probs especially with a 120 amp alt most are set for 100amps

Oct 24, 2007 | 09:22 PM

#23

somedude

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Joined: Oct 2005

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From: Prince george, B.C.

I took a multimeter to the battery terminals when the "wait to start" light was on, and I'd get an average of 8-10 volts,

if your batts went to 8 volt when the glow plugs came on they either need charging or they are no good
you should have two 800 cca batteries cca= cold cranking amps
you should be able two draw 400 amps from one battery for 15 seconds with out the voltage going below 10.5v
the glow plugs draw around 200 amps
A new battery will hold 11 volts during this test

Last edited by somedude; Oct 24, 2007 at 09:29 PM.