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Fass install

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Pulled my box off for an easier install for the Fass. Does this look like an in tank pump retrofit? Does anyone also know what this port should be connected to? Is it just a breather ?DA930EE7-690C-4335-9F5A-7ABBCE9B4FBA.jpeg.3343557b39261137fe2627c25ce92887.jpeg

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I believe it is a vent / rollover protection valve.  It should be present on all fuel modules.  I have one on my fuel tank module.

 

- John

  • Owner
48 minutes ago, Tractorman said:

I believe it is a vent / rollover protection valve.  It should be present on all fuel modules.  I have one on my fuel tank module.

 

- John

 

Correct. Tank vent with a rollover valve. Make sure the nipple is clear and not blocked. 

  • Author
On 2/28/2023 at 5:03 PM, Mopar1973Man said:

 

Correct. Tank vent with a rollover valve. Make sure the nipple is clear and not blocked. 

How would I know if I have an in tank pump? I’m out of town for work so I don’t have access to the truck. Only that picture I took of the electrical on top

  • Owner

Look at the engine where the lift pump should have been. It will be an aluminum bypass block and the wiring has been extended toward the rear.

 

Your photo shows four wires connected to the module.  This indicates there may be an in-tank pump.

 

- John

 

image.png.ee0b4512a35accc90af348f2355495a8.png

If it was a dealer retrofit, there may also be a relay hanging in the corner of your engine compartment, driver side by the firewall.  

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Welcome To Mopar1973Man.Com LLC

We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.