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Discussion Starter #1
Today's high was only 8C (about 45F) and decided to turn the heater on. This was the first time the heater was used for more than a few seconds since I got the car. I didn't use the autotemp and had the temperature set at about 25C. I had to drop by a buddy of mine's place to pick up something and while I was waiting for him to answer the door, the engine started making this loud noise.

It sounded as though it was being revved and the sound was sustained for about I'd say 30 seconds. Then the noise died down and the engine sounded as it usually does when idling in Park. My buddy just talked for a couple of minutes and I went back to the car and drove off. I checked the temp when I got back into the car and it was normal.

When I came home, I let the car idle for a while and the engine never made the noise again. Any idea what could've caused this? Is this something I should bother to point out to the service dept. when I'm in there again?
 

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Did you have the defroster on? If so, it may have actually kicked on the AC compressor.
 

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Could it be....

one of the cooling fans? I believe the Pilot has a pair of electric cooling fans. Maybe what you were hearing was one or both of the fans kicking in for a brief period.:confused:
 

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Re: Could it be....

copilot said:
one of the cooling fans? I believe the Pilot has a pair of electric cooling fans. Maybe what you were hearing was one or both of the fans kicking in for a brief period.:confused:
I think it's this. If the car's sitting, after a brief period of time, as it comes up to op temp, the 2nd fan will come on and it is noticeable. It "needs" the extra cooling since you're not moving and it doesn't get the airflow over the radiator.

RipRock - you could try and duplicate it to check. Just pop the hood - the fans are right behind the grill, side by side. Start 'er up -- one will probably be idle. Within a few minutes it'll start to go.
 

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The fans were my first thought, but then he said that he couldn't duplicate it later, when the engine should be even warmer. Dunno.
 

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The fan(s) have 2 speeds. I believe one is the actual rad fan while the other is the AC compressor fan.

I think the threshhold (for either) is around 200F for low and 210F for high (coolant temps). The coolant temp could have been reduced well below those by airflow during the drive home.

Just SWAGging here on the source of the noise. I'm assuming the RPMs didn't increase.
 

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Actually, his post stated that "it sounded like it was being revved."

Chris
 

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TheWorm said:

Hey, man, I can read his post. I just choose to read it 1/4 at a time :D ;) :p
May you never train to be a bomb squad specialist.
 

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xyzzy said:


May you never train to be a bomb squad specialist.
LOL. Kinda reminds me of those quizzes from 4th grade. You know, the one that says "read all instructions and questions before beginning" at the top. And the last (or second-to-last) instruction says "do not take this quiz; do not answer any questions; do not write on this paper".

Yea, I failed that one.
 

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he was out of the car

It sounds like a fan kicking on because he was out of the car when he noticed it. If he was inside the car, he might not have noticed it...
Another thing is, he can check the rpm next time it happens to see if it is really revving up... Then it would be a different story...
Just a swag...
 

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Discussion Starter #12
xyzzy said:
Actually, his post stated that "it sounded like it was being revved."

Chris
Well, I could be wrong though and I'm known to be so more often than not :( Now that I think about it, it did sound like some loud fan noise. So, it can be the fan kicking in, whether in higher speed or the second one.

But what's perplexing is, this is the very first time I've ever heard it. We've had an unusually warm and dry summer here but all summer long, even with the AC on, I don't think I heard the Pilot making that noise. But it can just as easily be such that this is the first time I caught making the noise.

Gosh...with all these noise problems and complaints, this car's got me paranoid. It's rather ironic that I never cared about noises coming from the cars I had previously owned.

Thanks for your input though, guys! Always invaluable and informative.
 

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Well RipRocK it's because we :10: love :10: our Honda Pilots, so every tick, pop, rumble, etc. gets us really nervous:confused:
 

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Discussion Starter #14
Tony said:
Well RipRocK it's because we :10: love :10: our Honda Pilots, so every tick, pop, rumble, etc. gets us really nervous:confused:
That's right. Once I drove the Pilot, I knew I was in for a special treat. It's like when you met this girl. You knew she was special. You knew, even with every nuances and quirks she possessed, you loved her inspite of it because she was just good all over. That's why she became your wife. ;)

It's like that with our Pilots. Once we drove it, we knew it was something special too, after having test driven other SUVs...well, unless something better came along. No, No, I'm just kidding; both for our Pilots and for our wives :D
 

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tony, alarm...

Tony, if you have LX model, did you install the Honda alarm? I did and I am so glad, it's so convenient, and gives me a peace of mind.
It was DIY job, painful but straight forward.
 

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lxblack,

Yes I have the alarm security package with remote on the key ring. It is a handy and useful item. We were thinking about the LoJack system too. The dealer said with the new key design (chip and the new way it's cut) and the alarm system, we should not have to worry about theft.

Some of my vehicles have been stolen, a 1976 Datsun Kingcab Pickup which they finally found completely destroyed a week later above one of the tunnels in Hawaii. A 1981 Nissan Kingcab Pickup, which was stolen twice by joyriders and left in some what good condition in Hawaii. Here in Arizona I had a 1988 Suzuki Samurai that was stolen at a mall, they found it that night in the north part of Peoria, Front window shattered, stereo and speakers ripped out and KC lights taken.

So I keep wondering whether I should get LoJack or not.:confused:
 
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