Most 2013 and some 2014 NO fuel heater engaged

[Newsa]

I am at the dealer service center now getting the emissions recall taken care of.

I also asked them to turn on the chassis fuel heater. They say that there is no chassis fuel heater on my vehicle.

I'm wondering if they are lying to me. Is the chassis fuel heater part of the cold weather option?

My truck was bought off the lot in NC. Wondering if trucks shipped to southern states didn't get the chassis heater?

 

[gsbrockman]

I am at the dealer service center now getting the emissions recall taken care of.

I also asked them to turn on the chassis fuel heater. They say that there is no chassis fuel heater on my vehicle.

I'm wondering if they are lying to me. Is the chassis fuel heater part of the cold weather option?

My truck was bought off the lot in NC. Wondering if trucks shipped to southern states didn't get the chassis heater?

They're not lying to you....at least not in thier own eyes.

They're inept buffoons working / putting in their time.

Review this thread for the TSB number and give it to them.....or better yet, take them to the truck and show them the fuel heater.

 

[Newsa]

Probably not, if remember right, they corrected the programming in October/November of 2013. Somebody had posted a copy of the TSB on one of the forums.

Sam

Anyone have the TSB #? Or a link to it?
Not seeing it

 

[Newsa]

anyone have the tsb #? Or a link to it?
Not seeing it

tsb 14-005-13.?

 

[RikDavis]

tsb 14-005-13.?

That is the number on my paperwork from the dealer

 

[gsbrockman]

Anyone have the TSB #? Or a link to it?
Not seeing it

http://www.cumminsforum.com/forum/2...ted-fuel-heater-operation-7.html#post10375098

 

[HorseMan-AR]

They're not lying to you....at least not in thier own eyes.

They're inept buffoons working / putting in their time.

Review this thread for the TSB number and give it to them.....or better yet, take them to the truck and show them the fuel heater.

Love it...I'd find a new dealer...I like the word buffoons!

 

[Newsa]

Well, they first told me that there was no Chassis fuel heater. Then when i gave them the TSB #, (at that time, I didn't have the actual pdf of the TSB that was just posted), They gave me the attached document that says Fuel Heater 1 is not computer controlled. I wonder if Fuel Heater 1 is the engine mounted one? And Fuel Heater 2 is the chassis mounted one?

Anyone know?

 

[HorseMan-AR]

I don't buy it...that looks like something some 18 year old tech typed and printed! Did they activate anything? Everything in these trucks is computer controlled, right?

 

[Newsa]

I always keep my paperwork. I doubt they activated anything. They insisted there was nothing to be done.

The TSB says its takes 0.2 of an hour to do. So maybe they did it and didn't want to be caught in a lie.

0.2 of an hour is 12 minutes. It took another 15-20 for them to get back to me.

It wasn't on the paperwork that they did it. But it is on the paperwork that I asked it to be done.

 

[gsbrockman]

I doubt they activated anything.

You'll never know FOR SURE until you check for power at the connector...

 

[RikDavis]

For whatever it is worth , this is from my paperwork. Our trucks are about the same except for the transmission, even bought in NC. The attached paperwork referenced was info I brought the dealer from this forum. They were very cooperative.

 

[Newsa]

Really appreciate the input from you guys. Yes, next step is check power at connector.

it's on my list of things to do.

 

[Newsa]

After studying both my trucks Power Distribution Center (PDC), and my DVD service manual, and further scratching around on the web, I found a wiring diagram by accident on tech authority. From the 2014 D2 trucks wiring diagram, fuse 9 (40 amp) supplies the engine mounted fuel filter heater directly from the diesel fuel heater relay (K 9?) which gets control power from the run/start relay and is grounded by G104. Thus effectively it is energized all the time the ignition is in run/start as we thought. The heater wire color codes are pink with dark green tracer supply with a black ground. The chassis fuel filter heater is supplied from fuse 37 (30 amp) from fuel heater relay #2 with the control power source being pin 12 of the body control module (BCM) and the relay grounded at G 105. The heater wire color codes for this circuit are pink with light blue tracer and a black ground. So this answers most of the questions. The BCM obviously knows what the ambient temperature is, so I'm going to check my before and after readings at the chassis fuel filter heater connector and see if it is indeed on all the time or if the BCM does actually cycle it based on its perceived fuel (ambient) temperature. It still seems to me to make sense that the BCM would supply power to the chassis mounted filter heater relay circuit at all times and the thermistor would allow current flow to maintain fuel temperature in band based on fuel temperature at the filter head. Mr. Brockman I concur that the wires running to and from the chassis mounted fuel filter are too small to carry 25 amps. Thus I'm guessing that this heater is rated at a lower power output and hence has a smaller fuse protecting it. Ken Irwin

I think Kirwin has part of my answer right here. Heater relay #1 is the engine mounted heater.

Heater relay #2 is the chassis mounted heater.

 

[Newsa]

At first I thought they were truely screwing me over and refusing to cooperate. But instead, they didn't understand the TSB.

So after explaining to them and showing them that the chassis fuel heater is installed, they argued that the BCM didn't show that it was installed.

I told them that is the purpose of the TSB. They were slow to understand becsuse they had never seen it before.

They said to bring it back this week and they will do it. They said it takes longer than the 12 mins the TSB ssys because they have to add it to the VIN # for Chrysler.

 

[Newsa]

So if I disconnect the chassis filter heater connector under the truck and I have 12 volts with the key in run as in the last sentence of Sag2's post my truck is OK right?

Why would the key need to be in the run position? Shouldn't the heater engage over night to keep fuel from gelling?

 

[TCDiesel]

Why would the key need to be in the run position? Shouldn't the heater engage over night to keep fuel from gelling?

No... if it was Hot constantly you would run down or kill the AGM batteries.

 

[AH64ID]

No... if it was Hot constantly you would run down or kill the AGM batteries.

At 300w it wouldn't take long at all.

 

[Newsa]

The heater assembly is equipped with a built-in fuel temperature sensor (thermostat) that senses fuel temperature. When fuel temperature drops below 32° F (0° C), the sensor allows current to flow to built-in heater element to warm fuel. When fuel temperature rises above 64° F (18° C), the sensor stops current flow to heater element (circuit is open).

Voltage to operate fuel heater element is supplied from ignition switch, through "relay in the PDC", to fuel temperature sensor and on to fuel heater element.

The heater element operates on 12 volts, 300 watts at 0 °F (-18° C). As temperature increases, power requirements decrease.

A minimum of 7 volts is required to operate the fuel heater. The resistance value of the heater element is less than 1 ohm (cold) and up to 1000 ohms warm.

I was just looking over this because I got some reduced price Stanadyne Power formula "warm weather blend" on EBay.

I was just thinking how there is a huge difference between 32° F & 64° F.

I'm in Miami FL and warm weather blend is good down to 40°F. We occasionally get 30 F weather, but never down to the 20's.

Lowest I've seen here is 34°F.