Coolant temp off??
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5th Gear
Joined: Feb 2023
Posts: 5
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Coolant temp off??
So I have a almost bone stock truck except straight pipe and a tune but it’s just a mild 40 horse for mpg but the tune shut down the egr so it doesn’t use it now I haven’t did the delete yet but for some reason I always Monitor my oil and coolant delta but recently it’s been off and I believe a sensor went bad because my tuner says my oil will be like 189 but coolant with be at 160 flat not a decimal or anytimg and will stay that way but in park it goes right back to normal at a 8 degree delta and it’s werid bc my truck normally is runs cool my oil temp never gets over 190 and it rarely reaches that so I think something has gone bad
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5th Gear
Joined: Feb 2023
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yea I’ll try it but it’s just weird all of a sudden my engine seems healthy my oil temp never gets to high even on long drives but this last week it’s been off by 30 degrees and it’s only resting on like whole numbers
Fleet Mechanic
Joined: Oct 2007
Posts: 1,712
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From: Henderson, NV
I Have replaced the oil and coolant temp sensors a few times because of similar readings. The good thing is they aren't too expensive.
Laughing Gas
Joined: Aug 2018
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5th Gear
Joined: Feb 2023
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oh no lol I figured it out I unplugged me egr bc the sct x4 already closes the valve but I plugged back into and it’s reading perfectly
Fleet Mechanic
Joined: Jul 2013
Posts: 1,402
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From: Tuscaloosa, AL
yep. I a just about to post about that. Me coolant temps would do that after some rodents chewed through some egr wiring. Coolant temps would jump up and down 20 degrees or so while cruising down the highway.
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Whitey Ford
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Jul 17, 2010 11:14 PM