There are scanners you can use that plug into your OBD plug. I have one that I use for my Bimmer that seems to work fine. I am sure if you search you'll find suggestions. Don't have any specific brand that I can recommend however. I am sure a few people of here can give a recommendation and maybe make a buck or two while at it 🤷

I am a bit surprised you're posting this considering you're not exactly new. Also surprised @Doc Olds haven't chimed in to paste his standard response to this question. What's going on guys? Are you testing me or something?

 

MadDogBimmer89 picked up Nonibot thread here>H3 running hotter than usual

 

lol no I am not new at all but it doesn’t hurt to get other peoples opinion and suggestion that's what the forum for . And I never had this issue before until I moved down south to Florida that’s why I always wondered but I never posted it .

 

That's unfortunate, had a few cars and used forums as a way to connect with folks to share, learn, and solve common issues. Noticing some are more about marketing and sales than actually people connecting and sharing ideas.. now everything is about money.. screw that. I bet the FTC would love to hear a case on manufactures selling b.s parts based on some opinion on forums..

 

You can use a basic Bluetooth or wifi scanner with an app on your smart phone, then you will know what actual coolant temp is.

You never had the issue until you moved to S FL........ where it is HOT and muggy in summer. Just like it makes you warm, it makes your vehicle warmer. If it is 80F in MI and my coolant is 198F at full operating temp, and it is 100F in FL (20 degrees F warmer) I will bet your coolant temp will be warmer too, like 210F+. Just a thought.

The when the temp gauge get pointing to red, be concerned. Until then, enjoy the ride.

 

yes today is 90 degrees humid and hot
the reading came 217F
so probably when the temperature was 100 or 102 it was maybe more than that. I got purple ice coolant additive maybe it will help during this hot weather

 

That's about what I am getting on my H3, I am in Nevada so temps have been quite high as of lately. Mine are even higher when on the freeway 220-225F. I did drop about 10 degrees while city driving and idling by adding a top seal and bottom seal. Do you still have yours?

Top seal is a seal between radiator and condenser coil. Bottom seal is a big rubber mat type thing that hangs off the bottom of the radiator and tucks back under the skid plate. Check out the other big thread (running hotter than usual) I added some photos about it. There's also some diagrams to help you identify the part.

 

When the cooling system is operating efficiently, engine temp should not exceed 100° above ambient.

 

lol in this case all out hummer cooling system is faulty lol cus I never seen anyone running 100 or less when on a none hot state but here in Florida good luck lol

 

so I have the buttom seal the big rubber mat that tuck in under the skid plate but I don’t have the top seal , can you tell me what part number is the top seal?