Engine Oil Temp too low? p1184 - Ford Powerstroke Diesel Forum
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post #1 of 12 Old 10-29-2013, 09:02 AM Thread Starter
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Engine Oil Temp too low? p1184

Got an 08 F550 6.4 Keep getting code p1184 Engine oil temperature sensor out of range.

Hooked up the scan tool and watched the EOT and ECT and the oil temperature seemed alittle low to me, At idle engine warm EOT would drop to 109* and after cruising around getting on it pretty hard the max temp I saw was 125* while the ECT was consistantly 160-170* at idle or driving..

btw its about 40* out right now.. been getting the code for a few weeks though, if cleared it comes back every couple of day or so.

any ideas? Thanks!

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post #2 of 12 Old 10-29-2013, 09:38 AM
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Sounds like the oil temperature sensor is bad.

08 F350 cc/sb 4X4
h&s minimaxx, 5" flo pro, 4" down pipe, no limit cold air intake, dirty diesel EGR delete with intake elbow, 6.0 exhaust manifolds, custom up pipes, ported intake manifold, Apex 71mm LP turbo, Rudy's cold side pipe, diesel site coolant and transmission filter, diesel site intercooler boots, ccv mod, bilstein shocks, gogo dd solenoid, HID lights, Airdog II 165, PMF traction bars, PMF drag link, moshimoto aluminum radiator
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post #3 of 12 Old 10-29-2013, 09:51 AM Thread Starter
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I would guess so too, sounds too easy for psd, haha! Thanks.

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post #4 of 12 Old 10-29-2013, 09:53 AM
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Yea for sure. Usually its an expensive fix lol

08 F350 cc/sb 4X4
h&s minimaxx, 5" flo pro, 4" down pipe, no limit cold air intake, dirty diesel EGR delete with intake elbow, 6.0 exhaust manifolds, custom up pipes, ported intake manifold, Apex 71mm LP turbo, Rudy's cold side pipe, diesel site coolant and transmission filter, diesel site intercooler boots, ccv mod, bilstein shocks, gogo dd solenoid, HID lights, Airdog II 165, PMF traction bars, PMF drag link, moshimoto aluminum radiator
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post #5 of 12 Old 11-02-2013, 07:55 PM
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I think it's your thermostats. If you should hit 185 even on colder days than that. How is your heat in the truck?
These are known for thermostat issues

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post #6 of 12 Old 11-04-2013, 06:16 PM Thread Starter
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Funny you mention that, I replaced EOT. Sensor and I drove around and ECT n EOT temps were within 1-2* and code was cleared .. But max temp I saw was 160*ish.. Didn't think much of it untill today light came back on... Forget code but it said engine coolant circulation/performance. Thanks!

09 F450 CC LB lariat 6.4 black on black 23k miles, stock.. (For now)...


97 F250 SC LB 4x4 7.3 05 Superduty axels, 18" King Ranch Rims, "under the knife"

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post #7 of 12 Old 11-05-2013, 06:19 AM
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How hard was it to replace the EOT sensor?

08 F350 cc/sb 4X4
h&s minimaxx, 5" flo pro, 4" down pipe, no limit cold air intake, dirty diesel EGR delete with intake elbow, 6.0 exhaust manifolds, custom up pipes, ported intake manifold, Apex 71mm LP turbo, Rudy's cold side pipe, diesel site coolant and transmission filter, diesel site intercooler boots, ccv mod, bilstein shocks, gogo dd solenoid, HID lights, Airdog II 165, PMF traction bars, PMF drag link, moshimoto aluminum radiator
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post #8 of 12 Old 11-05-2013, 04:38 PM Thread Starter
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Pull the intake boot off from the airbox to the turbo, (two hose clamps) sensor is right there, unplug it, replace, done! I've never done one before and it was a 10min fix. Sensor is on the passenger side of the oil filter housing at the base.

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post #9 of 12 Old 11-06-2013, 06:08 AM
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Sounds good. Thanks!

08 F350 cc/sb 4X4
h&s minimaxx, 5" flo pro, 4" down pipe, no limit cold air intake, dirty diesel EGR delete with intake elbow, 6.0 exhaust manifolds, custom up pipes, ported intake manifold, Apex 71mm LP turbo, Rudy's cold side pipe, diesel site coolant and transmission filter, diesel site intercooler boots, ccv mod, bilstein shocks, gogo dd solenoid, HID lights, Airdog II 165, PMF traction bars, PMF drag link, moshimoto aluminum radiator
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post #10 of 12 Old 11-14-2013, 06:55 AM Thread Starter
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Pulled the thermostats out and sure enough big chunk of the sealing rubber on the upper one was tore off. replaced them both shes blowing heat again.. thanks guys!

09 F450 CC LB lariat 6.4 black on black 23k miles, stock.. (For now)...


97 F250 SC LB 4x4 7.3 05 Superduty axels, 18" King Ranch Rims, "under the knife"

Former 6.0 Owner. (05,05,03)
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