[Teohenwhy]

I have read that normal operating temperature should around 90c. Mine runs around 100c with normal driving in city roads with no traffic . This seem high , but I never get a warning for overheating or high temps. What do you guys think?

[Surly73]

Originally Posted by Teohenwhy

I have read that normal operating temperature should around 90c. Mine runs around 100c with normal driving in city roads with no traffic . This seem high , but I never get a warning for overheating or high temps. What do you guys think?

What you've heard is wrong for an N52/N54. Because of the electronic water pump and t-stat, operating temp is all over the place by design. In low load/highway cruising expect 108C. It'll go down under heavy load/canyon carving.

[Teohenwhy]

Originally Posted by Surly73

What you've heard is wrong for an N52/N54. Because of the electronic water pump and t-stat, operating temp is all over the place by design. In low load/highway cruising expect 108C. It'll go down under heavy load/canyon carving.

Ok thanks. I was thinking these temps having something to do with my fans sounding like a jet engine on hot days but apparently this is normal for our cars?

[ek99civic]

WTF is celcius?

[Surly73]

Originally Posted by Teohenwhy

Ok thanks. I was thinking these temps having something to do with my fans sounding like a jet engine on hot days but apparently this is normal for our cars?

Well, that's maybe not normal. I've heard indications that a flaky water pump causes coolant to move too slowly, thus creating higher than *expected* temperatures (expected is the key word here), thus causing the DME to run the fan to MAX.

You might want to look into it, but 99C is not the reason. That's actually low. (Which, as an aside, could be further indication that you might have some kind of intermittent problem. The DME may be targetting a lower temperature because the water pump is misbehaving.)

You might want to have the car fully read for codes to be safe. You'd be best to catch a failing water pump before it totally fails at the worst possible time.

[Surly73]

Originally Posted by ek99civic

WTF is celcius?

What they use everywhere in the world except your country.

[Teohenwhy]

Originally Posted by Surly73

Well, that's maybe not normal. I've heard indications that a flaky water pump causes coolant to move too slowly, thus creating higher than *expected* temperatures (expected is the key word here), thus causing the DME to run the fan to MAX.

You might want to look into it, but 99C is not the reason. That's actually low. (Which, as an aside, could be further indication that you might have some kind of intermittent problem. The DME may be targetting a lower temperature because the water pump is misbehaving.)

You might want to have the car fully read for codes to be safe. You'd be best to catch a failing water pump before it totally fails at the worst possible time.

Can codes be read with Inpa Loader? If so how?

[Teohenwhy]

Originally Posted by Surly73

Well, that's maybe not normal. I've heard indications that a flaky water pump causes coolant to move too slowly, thus creating higher than *expected* temperatures (expected is the key word here), thus causing the DME to run the fan to MAX.

You might want to look into it, but 99C is not the reason. That's actually low. (Which, as an aside, could be further indication that you might have some kind of intermittent problem. The DME may be targetting a lower temperature because the water pump is misbehaving.)

You might want to have the car fully read for codes to be safe. You'd be best to catch a failing water pump before it totally fails at the worst possible time.

I would think that a failing water pump would cause a car to overheat which mine never does . And my loud fan, it has only happened one time and that day it was 106F outside. Other than that the fan isn't that loud.

[Surly73]

Originally Posted by Teohenwhy

I would think that a failing water pump would cause a car to overheat which mine never does . And my loud fan, it has only happened one time and that day it was 106F outside. Other than that the fan isn't that loud.

I read a thread on this board where people were complaining about bursts of max fan speed and it turned out to be the water pump intermittently misbehaving.

"Failing" can mean a lot of different things. I'm just reporting what I've heard in case it saves you a breakdown or a warped head.

Your post said that your fans sound like jet engines on hot days, not that it just happened the one time...