H3 Alpha engine overheat
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H3 Alpha engine overheat - 2/3/2008 9:23:06 PM
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fragss
Posts: 42
Joined: 2/2/2008
Status: offline
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Yesterday I ran the truck on sand for 1 minute at full throttle, 5-6k rpm, using the 4low, the engine temperature was on red at full. Is it normal? I checked the coolant level, was ok.
Any ideas?
Thanks in advance
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RE: H3 Alpha engine overheat - 2/4/2008 7:08:44 AM
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alrock
Posts: 1058
Joined: 5/12/2007
From: Scottsdale, AZ
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That's pretty high revs for 4Low, I usually don't exceed 3K. Sand, I believe, is better in 4H but there are others here with much more sand experience than me.
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RE: H3 Alpha engine overheat - 2/4/2008 7:47:06 AM
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Desert Dan
Posts: 145
Joined: 3/6/2007
Status: online
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What were you doing? Hill climbs? What was the outside air temp?
let some more air out of your tires and cruise in the sand.
What is the redline on the Alpha V8 anyway?
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Desert Dan
H3 2006 Adventure/Lux/5-spd/sunroof/rock rails/underbody skids/block heater/Defender Roof Rack
Jeep TJ Rubicon 2003
Gone-But Not Forgotten 4x4\'s
1994 Jeep YJ
Toyota 4x4 Truck(s)
1970 Jeep CJ-5
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RE: H3 Alpha engine overheat - 2/4/2008 1:09:36 PM
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RyanCodyH3
Posts: 255
Joined: 2/3/2008
From: Texas
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Run it in high lock. If the same thing happens, get it looked at.
Try to keep the revs down also. Beating the crap out of your engine for extended periods of time can't be all that good for it.
Oh and I believe the Alpha redlines at around 5800?
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RE: H3 Alpha engine overheat - 2/4/2008 2:57:48 PM
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solarflare
Posts: 703
Joined: 1/3/2008
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That is very high rpm's when you are in 4Lo......mine would overheat to....if I did that.....ouch
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RE: H3 Alpha engine overheat - 2/4/2008 4:22:17 PM
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rhill20
Posts: 4549
Joined: 10/27/2007
From: Delaware, Ohio GO BUCKS!
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As everyone else has pretty much said, you shouldn't need anything more the 4Hi. Higher RPM's will dig more than crawling across the top of the sand IME. Alot depends on individual exp and situation.
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RE: H3 Alpha engine overheat - 2/4/2008 4:36:13 PM
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HummerMike
Posts: 376
Joined: 8/8/2006
From: Crown Point, IN
Status: offline
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yes, it will heat up fast if your revving that high in 4low. like the others said, 4high lock is good for sand. 4 low lock is for very slow off roading only and your rpm's should be kept low.
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RE: H3 Alpha engine overheat - 2/4/2008 4:36:28 PM
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Muddydawg75
Posts: 9959
Joined: 3/11/2007
From: South Jersey Shore
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wow... 6 grand is asking for serious trouble...
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RE: H3 Alpha engine overheat - 2/4/2008 4:40:51 PM
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HummerMike
Posts: 376
Joined: 8/8/2006
From: Crown Point, IN
Status: offline
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quote:
ORIGINAL: Muddydawg75
wow... 6 grand is asking for serious trouble...
No kidding! I think that could be considered as Hummer Abuse. 
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'08 H3 ALPHA w/Adventure Package. Graphite Metallic, Mickey Thompson Baja MTZ's, Rocker Panel & Driveline Protection, Winch, more to come...
www.illianahummerclub.com
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