Engine Oil Temps
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More Turbo
Joined: Jun 2011
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From: Indiana
Engine Oil Temps
after doing some data logging... I have notice my EOT never goes below 105 (F) degrees, even after the truck has been parked for 2 days.
is this normal? do I need replace the EOT sensor? what else might cause this?
is this normal? do I need replace the EOT sensor? what else might cause this?
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More Turbo
Joined: Jun 2011
Posts: 634
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From: Indiana
I understand what the temp readings should be.
my response was to cheezit... he recommended I "ohm out" the EOT sensor, which is good advice. my question is when I take ohm readings on the sensor, what should the resistance readings look like?
I am fairly certain the EOT sensor is bad, but I want make sure there is nothing else that might cause the inaccurate readings before I replace the sensor.
my response was to cheezit... he recommended I "ohm out" the EOT sensor, which is good advice. my question is when I take ohm readings on the sensor, what should the resistance readings look like?
I am fairly certain the EOT sensor is bad, but I want make sure there is nothing else that might cause the inaccurate readings before I replace the sensor.
Mountain Pass
Joined: Jul 2006
Posts: 118
Likes: 0
I understand what the temp readings should be.
my response was to cheezit... he recommended I "ohm out" the EOT sensor, which is good advice. my question is when I take ohm readings on the sensor, what should the resistance readings look like?
I am fairly certain the EOT sensor is bad, but I want make sure there is nothing else that might cause the inaccurate readings before I replace the sensor.
my response was to cheezit... he recommended I "ohm out" the EOT sensor, which is good advice. my question is when I take ohm readings on the sensor, what should the resistance readings look like?
I am fairly certain the EOT sensor is bad, but I want make sure there is nothing else that might cause the inaccurate readings before I replace the sensor.
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More Turbo
Joined: Jun 2011
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From: Indiana
drove the truck to work.. its been sitting about 5 hrs now. EOT sensor "ohms" out at 19.5 ohms with the meter on the "K" range.
I am guessing that's a little high
I am guessing that's a little high
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Joined: Oct 2009
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From: N. Fort Worth, tx
see heres the thing the sensor is a thermister so with out knowing what the temp is out side when the check is done noone can give you the correct awnser as to what the correct value should be.
however that information should be in section 6 of the pc/ed
however that information should be in section 6 of the pc/ed
Lead Driver
Joined: Feb 2011
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From: L.A. (Lower Alabama)
Fleet Mechanic
Joined: Nov 2003
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From: West Cornwall, CT
Following Cheesit's tip, there is a temperature vs resistance chart buried in the service manual.
50 deg - 59,016 ohms
77 deg - 30,000 ohms
86 deg - 24,329 ohms
95 deg - 19,696 ohms
140 deg - 7,556 ohms
If you are getting a number like 19.5K (19,500 ohms), that corresponds to a termperature of 95 degrees.
I'd look at coolant temperature and intake air temperatures after sitting overnight and compare them to EOT. They should be very close to each other. The spec buried in the manual is 10 deg F.
Lou Braun
50 deg - 59,016 ohms
77 deg - 30,000 ohms
86 deg - 24,329 ohms
95 deg - 19,696 ohms
140 deg - 7,556 ohms
If you are getting a number like 19.5K (19,500 ohms), that corresponds to a termperature of 95 degrees.
I'd look at coolant temperature and intake air temperatures after sitting overnight and compare them to EOT. They should be very close to each other. The spec buried in the manual is 10 deg F.
Lou Braun
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More Turbo
Joined: Jun 2011
Posts: 634
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From: Indiana
Following Cheesit's tip, there is a temperature vs resistance chart buried in the service manual.
50 deg - 59,016 ohms
77 deg - 30,000 ohms
86 deg - 24,329 ohms
95 deg - 19,696 ohms
140 deg - 7,556 ohms
If you are getting a number like 19.5K (19,500 ohms), that corresponds to a termperature of 95 degrees.
I'd look at coolant temperature and intake air temperatures after sitting overnight and compare them to EOT. They should be very close to each other. The spec buried in the manual is 10 deg F.
Lou Braun
50 deg - 59,016 ohms
77 deg - 30,000 ohms
86 deg - 24,329 ohms
95 deg - 19,696 ohms
140 deg - 7,556 ohms
If you are getting a number like 19.5K (19,500 ohms), that corresponds to a termperature of 95 degrees.
I'd look at coolant temperature and intake air temperatures after sitting overnight and compare them to EOT. They should be very close to each other. The spec buried in the manual is 10 deg F.
Lou Braun
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