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low fuel pressure lite ,Kit #41373

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Jegs sells a low fuel psi switch kit that is adjustable.(5to25psi). a little pain to set at 10-12psi but if your fuel pump is adjustable you can turn it down till lite comes on or off ,then reset your pump.

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the adjustable part is pretty good. but i dont think you can beat a fp gauge. to me its easier seeing real time pressure. as the pressure would begin to drop as your filter is filling with contaminants you are able to see it slowly drop and know there is a problem before the warnig light comes on. i have been thinking of putting one in addition to my fp gauge in case of a quick failure of some component in the fuel system.

the adjustable part is pretty good. but i dont think you can beat a fp gauge. to me its easier seeing real time pressure. as the pressure would begin to drop as your filter is filling with contaminants you are able to see it slowly drop and know there is a problem before the warnig light comes on. i have been thinking of putting one in addition to my fp gauge in case of a quick failure of some component in the fuel system.

I agree, a low psi light does not tell the whole story and really isn't worth the cost or hassle. If you really want one you should do it in addition to, not instead of, like you mentioned.
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my fp guage is mounted on intake to the fuel filter. i had a BD 5 psi lite at ip.(lost IP be before i had guage) wanted to change to a higher psi so icould tell if fuel filter was getting bad at a higher psi. fabed a hose w/ valve for a snubber on the new psi switch.hope i made sense

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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.