H3 running hotter than usual
Thread Starter
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Member
Joined: Mar 2021
Posts: 59
H3 running hotter than usual
Hey all, got a strange one here and would be grateful for some help.
My H3 is running hotter than usual and the temperatures rise only when accelerating, like when city driving mostly but once I'm cruising or come to a complete stop, it doesnt rise anymore and in fact eventually starts to come back down to normal operating temperature in some time and stays there until I push it again, and it starts to creep back up.
The rise and drop of the temperatures is very gradual and not sudden. I have been monitoring my temperature using the ScanGuage2 so I know the exact readings, which at it's highest went up to was about 113°C (235°F).
Since then, the thermostat and water pump have been changed and that didn't help. The radiator is about a year old but i still checked it out and it is clean and also had the system burped so I'm sure that's not the issue. Furthermore, i have an electric fan installed and that's working fine too. I also had the tensioner puller changed out just in case it was slipping, and it did squeak when i checked it after removing.
What else should i be looking at? Any help would really be appreciated as I'm at a loss here. I'm in the Middle East so ambient temperatures have currently reached about 45°C/113°F. What's interesting is that when I test it at night, it doesn't go that high at all but during the day it does creep up significantly - but I'm sure this didn't happen last summer so there sure is something going on.
Tldr; temperature only rising gradually when city driving but comes back to normal eventually when cruising or at a stop. Usual suspected parts changed out but no help.
My H3 is running hotter than usual and the temperatures rise only when accelerating, like when city driving mostly but once I'm cruising or come to a complete stop, it doesnt rise anymore and in fact eventually starts to come back down to normal operating temperature in some time and stays there until I push it again, and it starts to creep back up.
The rise and drop of the temperatures is very gradual and not sudden. I have been monitoring my temperature using the ScanGuage2 so I know the exact readings, which at it's highest went up to was about 113°C (235°F).
Since then, the thermostat and water pump have been changed and that didn't help. The radiator is about a year old but i still checked it out and it is clean and also had the system burped so I'm sure that's not the issue. Furthermore, i have an electric fan installed and that's working fine too. I also had the tensioner puller changed out just in case it was slipping, and it did squeak when i checked it after removing.
What else should i be looking at? Any help would really be appreciated as I'm at a loss here. I'm in the Middle East so ambient temperatures have currently reached about 45°C/113°F. What's interesting is that when I test it at night, it doesn't go that high at all but during the day it does creep up significantly - but I'm sure this didn't happen last summer so there sure is something going on.
Tldr; temperature only rising gradually when city driving but comes back to normal eventually when cruising or at a stop. Usual suspected parts changed out but no help.
Super Moderator
Joined: Jul 2007
Posts: 13,101
From: Boat Town USA MI
Was the replacement T Stat an OEM? Replacement T Stats are rated at appx 5F hotter than the original OEMs. I do not think your temps are a huge concern with your ambient air temps you described. A little warm, but no disastrous for sure.
When was the last time your Trans Fluid and Filter were changed? Clean fresh Trans Fluid can reduce heat.
BTW, H3 Radiators never need to be burped, they will do that by themselves with a couple heat cycles and adjusting the coolant level in the expansion tank after cool down.
When was the last time your Trans Fluid and Filter were changed? Clean fresh Trans Fluid can reduce heat.
BTW, H3 Radiators never need to be burped, they will do that by themselves with a couple heat cycles and adjusting the coolant level in the expansion tank after cool down.
Junior Member
Joined: Nov 2021
Posts: 26
From: Riyadh,KSA
Hey all, got a strange one here and would be grateful for some help.
My H3 is running hotter than usual and the temperatures rise only when accelerating, like when city driving mostly but once I'm cruising or come to a complete stop, it doesnt rise anymore and in fact eventually starts to come back down to normal operating temperature in some time and stays there until I push it again, and it starts to creep back up.
The rise and drop of the temperatures is very gradual and not sudden. I have been monitoring my temperature using the ScanGuage2 so I know the exact readings, which at it's highest went up to was about 113°C (235°F).
Since then, the thermostat and water pump have been changed and that didn't help. The radiator is about a year old but i still checked it out and it is clean and also had the system burped so I'm sure that's not the issue. Furthermore, i have an electric fan installed and that's working fine too. I also had the tensioner puller changed out just in case it was slipping, and it did squeak when i checked it after removing.
What else should i be looking at? Any help would really be appreciated as I'm at a loss here. I'm in the Middle East so ambient temperatures have currently reached about 45°C/113°F. What's interesting is that when I test it at night, it doesn't go that high at all but during the day it does creep up significantly - but I'm sure this didn't happen last summer so there sure is something going on.
Tldr; temperature only rising gradually when city driving but comes back to normal eventually when cruising or at a stop. Usual suspected parts changed out but no help.
My H3 is running hotter than usual and the temperatures rise only when accelerating, like when city driving mostly but once I'm cruising or come to a complete stop, it doesnt rise anymore and in fact eventually starts to come back down to normal operating temperature in some time and stays there until I push it again, and it starts to creep back up.
The rise and drop of the temperatures is very gradual and not sudden. I have been monitoring my temperature using the ScanGuage2 so I know the exact readings, which at it's highest went up to was about 113°C (235°F).
Since then, the thermostat and water pump have been changed and that didn't help. The radiator is about a year old but i still checked it out and it is clean and also had the system burped so I'm sure that's not the issue. Furthermore, i have an electric fan installed and that's working fine too. I also had the tensioner puller changed out just in case it was slipping, and it did squeak when i checked it after removing.
What else should i be looking at? Any help would really be appreciated as I'm at a loss here. I'm in the Middle East so ambient temperatures have currently reached about 45°C/113°F. What's interesting is that when I test it at night, it doesn't go that high at all but during the day it does creep up significantly - but I'm sure this didn't happen last summer so there sure is something going on.
Tldr; temperature only rising gradually when city driving but comes back to normal eventually when cruising or at a stop. Usual suspected parts changed out but no help.
Thread Starter
|
Member
Joined: Mar 2021
Posts: 59
Was the replacement T Stat an OEM? Replacement T Stats are rated at appx 5F hotter than the original OEMs. I do not think your temps are a huge concern with your ambient air temps you described. A little warm, but no disastrous for sure.
When was the last time your Trans Fluid and Filter were changed? Clean fresh Trans Fluid can reduce heat.
BTW, H3 Radiators never need to be burped, they will do that by themselves with a couple heat cycles and adjusting the coolant level in the expansion tank after cool down.
When was the last time your Trans Fluid and Filter were changed? Clean fresh Trans Fluid can reduce heat.
BTW, H3 Radiators never need to be burped, they will do that by themselves with a couple heat cycles and adjusting the coolant level in the expansion tank after cool down.
And the trans; i had my trans rebuilt and I've only put in around 15-20k kms/9-12k mi so it should be clean. And i have bypassed the OEM cooler while running an external trans cooler so that should not be it right?
Thread Starter
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Member
Joined: Mar 2021
Posts: 59
Yes but The problem is it wont stop rising if i continued as is. And the radiator was clean already but i still had it removed and cleaned further just to remove any possibilities.
Thread Starter
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Member
Joined: Mar 2021
Posts: 59
Water pump is OEM too.
Radiator was good and i still got it cleaned out so it's not clogged.
Senior Member
Joined: Oct 2019
Posts: 150
do you have the original clutch fan?. The clutch will go out and the fan will still spin but not engage cooling off the engine properly or could be the water pump or air bubble in line? i have beard of burping the coolant system.
