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Discussion Starter · #1 ·
Not an emergency but I’ve been getting a check engine light that keeps coming back I forget the the code I’ll have to scan it agin but it’s failure to maintain operation temp. I figure its probably one of the thermostats stuck open you guys ever deal with anything like this? Took these on the way home engines been running 10mins maybe temp outside 48.
Plant Speedometer Car Trip computer Vehicle

Speedometer Trip computer Odometer Tachometer Car
 

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Get the code and let us know what it is. Changing thermostats is a bigger job than getting the code. Problem could be your ECT sensor, or not.
 

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It's the number we're after. Personally, I've never heard of a code for "failure to maintain operation temp. " All the reference materials I have access to are arranged by DTC number
 

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Like Ron said we will need the exact CEL code to determine what the issue is.

Most likely whatever the code is for “below operating temp” which usually is bad thermostats but will need the number to confirm that.
 

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F?$& me I can’t catch a break. Just did my routine oil change just now and noticed this. Guess I’ll tackle this first then the cel, when it rains it pours. View attachment 1110502
If it’s diff fluid you’ll be fine leaving it for a little bit if you’re not using 4wd everyday. Mine has very slowly seeped since the day I bought the truck over 100k miles ago and it’s still fine Lol. Granted it doesn’t get this wet but still.
 

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Discussion Starter · #8 ·
If it’s diff fluid you’ll be fine leaving it for a little bit if you’re not using 4wd everyday. Mine has very slowly seeped since the day I bought the truck over 100k miles ago and it’s still fine Lol. Granted it doesn’t get this wet but still.
It was bone dry 3k ago it appears to be leaking pretty good. Hell I live in Northern California I can count the times I've had to use the 4wd on this truck on one hand. I’m a little concerned just because I got a track day Saturday gotta tow around 100miles I might just add some fluid call it good tackle it Sunday my other truck isn’t quiet ready yet still waiting on reg.
 
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