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post #1 of 6 Old 04-18-2009, 02:37 PM Thread Starter
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Unknown Noise

Well here's one that's urking me. I've noticed with the weather getting warmer, that when I let my truck idle, it kinda makes an unknown sound. For a few seconds it sounds normal & then it sounds like it's in Street with a TW chip. I noticed it did this @ the end of last summer. I have no codes & it passed a contrib test. The idle itself only drops a hair when it does this. I'm not so worried about it being a problem @ this point, it's more so I'm wondering what it's doing. Has anyone else had this?

"HEAVY" 2001 F-250 XLT 4x4 EC SB:
TW 6pos chip, S&B CAI, Monster 4" exhaust w/ Power Elbow, Big Head WGA, Technicooler, ITP boost fooler, Gen 1 Wicked Wheel, Six-Gun Tuner, Optima Yellow Tops, AutoMeter(Boost, Trans, EGT), CCV mod, MTS TC, MTS valve body, Trans Tech performance rebuild kit, TransGo shift kit, Hornblasters 242 Shocker Train Horns.

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post #2 of 6 Old 04-18-2009, 03:37 PM
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does it go up and down?

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post #3 of 6 Old 04-18-2009, 03:50 PM
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Originally Posted by RadarRider View Post
Well here's one that's urking me. I've noticed with the weather getting warmer, that when I let my truck idle, it kinda makes an unknown sound. For a few seconds it sounds normal & then it sounds like it's in Street with a TW chip. I noticed it did this @ the end of last summer. I have no codes & it passed a contrib test. The idle itself only drops a hair when it does this. I'm not so worried about it being a problem @ this point, it's more so I'm wondering what it's doing. Has anyone else had this?
Geezz,......Down here in TX it's usually just our a/c clutch kick'n on

F'n withcha


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post #4 of 6 Old 04-18-2009, 03:57 PM
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Originally Posted by OneBigDoofus View Post
Geezz,......Down here in TX it's usually just our a/c clutch kick'n on

F'n withcha



our gas cars do that. havent heard our diesels do that yet.

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post #5 of 6 Old 04-18-2009, 03:58 PM
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maybe its the air temp sensor controlling the idle. since its not cold it can idle lower.

2006 Ford F250 CCSB FX4 6.0

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post #6 of 6 Old 04-18-2009, 06:13 PM Thread Starter
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Originally Posted by bockhold View Post
maybe its the air temp sensor controlling the idle. since its not cold it can idle lower.
Hmmm....that sounds like a good possibility. The 2 days I have noticed it doing this was on the really warm days(65*+). Anything below 65* it doesn't do it.
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Originally Posted by OneBigDoofus View Post
Geezz,......Down here in TX it's usually just our a/c clutch kick'n on

F'n withcha

I can always count on you, Doofus, to kick a guy when he's down! LOL!

"HEAVY" 2001 F-250 XLT 4x4 EC SB:
TW 6pos chip, S&B CAI, Monster 4" exhaust w/ Power Elbow, Big Head WGA, Technicooler, ITP boost fooler, Gen 1 Wicked Wheel, Six-Gun Tuner, Optima Yellow Tops, AutoMeter(Boost, Trans, EGT), CCV mod, MTS TC, MTS valve body, Trans Tech performance rebuild kit, TransGo shift kit, Hornblasters 242 Shocker Train Horns.

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