hauling temps

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Sep 14, 2013 | 08:00 PM

Fert

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hauling temps

ok so the other day I was hauling a 20' goose neck trailer loaded with firewood... really overloaded but didnt realize it till out of the hole behind the house. once on the driveway almost moved some weight around but didnt.

so its an 08 with 4X4 and diesel powered. I have it chipped but didnt use extra power cause it didnt need it really and i only have the chip basically for the MPG increase.

so the ugly: it is a 1 mile 12-15% uphill pull with 2 180 degree switchbacks on an old country road. the gauges from the factory never got more than 2/3 on the trans and engine temps. but my little box got to 239F for tranny and 219F for the engine coolant. the fan kicked on and progressively cooled the engine but took a bit to cool the tranny.
after the top I had 6 miles of "easy" ride to the house for a cooldown and waited till normal temps before shutting the engine down.

truck still running fine, I will get a manual switch for the fan before hauling that much weight again.... but for yall hauling alot of the time what temps do yall see on the higher side?

thanks Fert

Sep 14, 2013 | 08:18 PM

Tom

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From: Isanti, MN

Quote:

Originally Posted by Fert

Why would you need a manual switch? Your truck got warm but it certainly was not overheated. Neither your engine nor transmission got too not, and from your description everything is working as it should.

I don't see a problem here.

Sep 15, 2013 | 01:51 AM

A/Ox4

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Joined: Aug 2009

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From: Missouri

I agree.. What makes you think you controlling the fan will be better than the truck? It knows when to turn it on. Everything youre describing is a perfectly working truck.

Sep 15, 2013 | 03:21 AM

Fert

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Quote:

Originally Posted by A/Ox4

I agree.. What makes you think you controlling the fan will be better than the truck? It knows when to turn it on. Everything youre describing is a perfectly working truck.

I understand what you are saying... I guess it is the 10 yrs OTR driving that makes me want to be in more controll. seeing the hill anticipating the heat buildup... blah blah blah... heck I duno

Fert

Sep 15, 2013 | 06:46 AM

Tom

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From: Isanti, MN

Quote:

Originally Posted by Fert

I understand what you are saying... I guess it is the 10 yrs OTR driving that makes me want to be in more controll. seeing the hill anticipating the heat buildup... blah blah blah... heck I duno

Fert

I completely understand your concern though. I drove OTR for a couple of years, and I remember the DD Series 60 in my Freightshaker had a maximum "Do Not Exceed" spec of 215° coolant temp. The C15 in my KW would have alarms and buzzers going off once it hit 220°.

These light duty engines are designed to run warmer; the cooling fan on my 6.4L truck wouldn't engage until the coolant temp got around 218°. I can't find the maximum temperature spec, but I know that as long as your gauges stay out of the red zone of the gauge then you're fine. If it ever gets to that point the best bet is to pull off to the side and run your idle up to ~2,000 RPMs to let the system shed some heat. I don't think you'll ever get to that point though, these things have a HUGE cooling system.

Sep 15, 2013 | 07:17 AM

Quad Racer

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Joined: Jun 2011

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From: Cincy area

I think a manual switch for the fan would be sweet. Like you said you see a hill up ahead hit the fan switch to start extra cooling before you head up the hill. Not sure if its possible. The fans aren't electric in these trucks are they? We eliminate the sensor and wire the fans to run constantly on the race quads but they are electric fans.

Sep 15, 2013 | 07:28 AM

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

Posts: 24,709

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From: SE Florida

It is an engine driven fan with an electronically controlled fan clutch. I would not add a manual switch, there is a danger of screwing up the PCM with the switch.