Caterpillar 3406e ECM wont turn fan on

[racrguy]

http://www.yellowpages.com/dallas-tx/mip/truck-ecm-479855588?lid=479855588

[94 cobra]

I don't think that'll be an issue. I remembered the name of the place, it's called Truck ECM. you might call him and ask what it'll take to fix it, and if it'll have to be reflashed. Best I recall we've never had to flash one after getting it back from him.

Question: why do you have it turned up so high? That HAS to be killing mileage.

I will call them. And I gained mileage with the tune. Just getting the
right turbo and cam cost to damn much

[shumpertdavid]

Hayden makes a couple of fan controllers, oreillys generally stocks them. One uses an 1/8" npt thread temp sensor, the other a probe that goes in the radiator fins. They both have a provision for a/c control and are adjustable via rheostat on the unit. I've used the coolant temp sensor style on 4 different projects now. It has a relay built in and wired to control 2 fans if I remember correct, but I've always used it to control a higher amperage relay since most of these have a taurus fan on them. In your case I assume it will be controlling the fan air supply solenoid.

There is no timer function on the a/c control, however, it will cycle the fan on anytime it receives an A/c input, unless it's running through a pressure control switch.

[Tx Redneck]

I just dont want anyone messing up my program
up it's set at 900HP and dont want to have to
Pay for that again

Dude, 900HP on a 3406e? That's BALLS!

[94 cobra]

Dude, 900HP on a 3406e? That's BALLS!

ya it sure is nice to pass empty trucks going up hill
but it dose run a little warm up mountins

i went up i-17 from phonix to flagsaff half throttle at 50 MPH weighing 80300

but i was running 60 but couldnt keep it below 218 degrees

[Mysticcobrakilla]

Just an FYI. I talked with our ECM guru at work and he said he has only seen two bad ECMs in the 7 years that he's been there. I guess you're just that lucky.

[shumpertdavid]

There's some pretty good climbs through that section, I've got family in Cottonwood/Clarkedale area.

[otrtruckpro]

[QUOTE=racrguy;1324554]I don't think that'll be an issue. I remembered the name of the place, it's called Truck ECM. you might call him and ask what it'll take to fix it, and if it'll have to be reflashed. Best I recall we've never ha

[otrtruckpro]

Fuck It

[94 cobra]

Just an FYI. I talked with our ECM guru at work and he said he has only seen two bad ECMs in the 7 years that he's been there. I guess you're just that lucky.

ya it would be my luck lol

[94 cobra]

There's some pretty good climbs through that section, I've got family in Cottonwood/Clarkedale area.

ya 6 and 7 percent grades all the way up.