2006 Hummer H3 over heating to 3/4 when parked.
#22
03-31-2019, 01:23 AM
What PSI cap are you using? Each psi raises boiling point of water by 3* and if you are using a 50/50 coolant-water mix the starting boiling temp is raised to 223* in open air.
#23
03-31-2019, 04:35 PM
I would not drive my vehicle if the temp gauge hit 3/4 unless I ruled out the fact that the gauge was inaccurate. Use a scanner, infrared thermometer, etc.. to find the actual temp. IMO, 210 is the optimal temp. The coolant system is designed to keep the engine at a near constant temperature. If the temp is to cold it affects fuel economy and performance. If the temp is to hot, engine/trans parts overheat and get damaged. When my '07 was operating 1/2- 3/4, I replaced the T-stat and installed fresh coolant. Now 12yrs old and it still stays at 1/2 or slightly above/below that mark. Btw, always make sure the radiator fins are clean, spray them with a garden hose on high pressure, to clean out any debris.
its always under 1/2 hot idle in july
#25
09-17-2019, 01:24 PM
How exactly do you do that with the infrared thermagigger, I have one and would like to check my waterpump
#26
09-17-2019, 01:47 PM
I already told you in another thread that an Infared Thermometer is NOT going to measure anything other than surface temp. The outside surface temp of a coolant hose, water pump, T stat Housing, etc...... is not an accurate representation of what the temp of the coolant is inside.
So to be precise, you are exactly not going to be able to do that with your thingamajigger.
I also asked that you avoid digging up OLD threads. This place has some rules, that is one of them. Please avoid that from here out.
Search and read, avoid tacking some comment on any old thread, just no reason to do it. There is a plethora of old threads here from paranoid people that think they might be overheating because they saw the temp gauge go to 3/4. That would be wrong. Search and read for yourself.
So to be precise, you are exactly not going to be able to do that with your thingamajigger.
I also asked that you avoid digging up OLD threads. This place has some rules, that is one of them. Please avoid that from here out.
Search and read, avoid tacking some comment on any old thread, just no reason to do it. There is a plethora of old threads here from paranoid people that think they might be overheating because they saw the temp gauge go to 3/4. That would be wrong. Search and read for yourself.
#27
09-28-2019, 01:48 PM
I think it should be a recall on the temp problem
If we are all having same issues. How can we get it to be a recall...
My question is, if it's not over heating at the 3/4 mark, why did it go higher after 12 years of running at 1/2 mark? Also, shouldn't there be a change in the reservoir? We have replaced thermostat, radiator, temp coolant sensor, fan clutch and a couple of freeze plugs and nothing has changed the level of the reservoir. And, we somehow got green antifreeze this last time, but it's still orange at temp sensor and reservoir. Just don't understand. At least I don't smell it anymore.
#29
09-30-2019, 07:43 AM
GM is still responsible for the Hummers they produced. Problem is after all the miles put on these trucks it will be hard to convince the NTSB that there's a systemic issue that would require a recall.
#30
07-09-2021, 06:24 PM
same here, i just switched out my radiator and its actually going more than 3/4th. I live in vegas and it makes it so much worse.