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  #1  
Old 05-27-2009, 02:57 PM
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engine running hot

i have a 2003 ford f-350 6.0L diesel. engine cooling fan will not turn on till 230F. there are no codes stored or active in the computer system. howe ever, in the data stream there are two coolant temperature sensor readings, one will read 192 F and the other one will read 155 F. when the sensor is unplugged both read -40 F. i tried replacing the sensor at the thermostat housing. but the fan still won't go, but when i unplugg the sensor the fan will run. is my egr cooler screwed? (read some previous threads)
truck is equiped with a banks palm pilot chip, airaid air intake, 4" mbrp exhaust
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Old 05-27-2009, 02:58 PM
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p.s will also be installing a liberator egr delete kit while this problem has occured.....
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Old 05-27-2009, 03:08 PM
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230 is a bit hot

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Old 05-27-2009, 03:55 PM
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have you or any one heard of this occuring and what can my solution be to repair this?
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Old 05-27-2009, 04:02 PM
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Might be head gasket issues too. usially anything over 210 is considered hot
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Old 05-27-2009, 04:19 PM
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Quote:
Originally Posted by SamW View Post
Might be head gasket issues too. usially anything over 210 is considered hot
that might be so. when i was having hg issues, my temp spiked b4 the tstat opened or while opening.
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Old 05-27-2009, 11:07 PM
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ya true i could maby see it, but my coolant resevoir isn't over presurized. i don't know man, how could my fan work when i unplug the coolant sensor but when i plug it back in it i got no fan operation.....
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Old 05-28-2009, 05:42 AM
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could the sensor for the fan be out?
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Old 05-28-2009, 06:49 AM
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installed a new sensor, no difference???
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Old 05-28-2009, 07:36 AM
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wonder what it is, no ideas
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