help reading results from testing my EOT resistance - Ford Powerstroke Diesel Forum
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Old 12-07-2012, 08:25 AM
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help reading results from testing my EOT resistance

Hello
I have a 2001 7.3 with 134k miles
I bought this a few months ago and have been making up for the lack of maintenance of the previous owner

I've done alot of research and i think my problem with my cold start could be my EOT - so im trying to test it. I've printed off paperwork that tells me the resistance values i should receive in ohms and then the volts of the sensor corresponding to the temperature.

First I will say I replaced the EOT sensor with a new one. Problem still there. Thus i think its a ground or electrical issue.

I will be the first to say I'm not good with the electrical aspect of working on my truck. Learning curve.

I am going to try to attach a picture of my multimeter so when i state what setting i am using another individual can verify this or tell me I'm way off.

.......So after letting my truck sit over night to ensure the oil temperature will be the same as the outside temperature i went to check the resistance. As the instructions stated (on my print out off this forum or maybe a different powerstroke one ) i didn't have the key on. The temp outside was 40F so the K ohms value should be 64 and the volts should be 4.18.

when i tested this i had my setting on the 200k ohm section (gray section on my multimeter) and i got a value of 11.9-12. When i would change settings to 2k or 200 I would get no reading.

The instructions also said if i turn the key on i could test the volts. i did this at the 1.5 volts setting (green section) and got 0.8.

I dont understand what this is telling me except I assume i have a ground issue or possible bare spot in my wire or something. I am going to track the eot wire to the 42 pin harness and on the way to the pcm.

Thoughts, suggestions?
Thanks for any help

So far in these few months of owning this I've had to replace
-all 8 glow plugs
-glow plug relay
-starter
-starter selnoid
-alternator
-both batteries
-upper and lower ball joints on both sides
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