electrical sending unit fuel pressure

[uloadit]

Looking at putting a fuel pressure gauge in my the cab of my truck but would like to use an electrical sending unit instead of the isolator kit .Is there any down fall useing the electrical sending unit?Just asking but I don't see the difference in useing a sending unit .All the sencors on the engine are electrical sending units.i was going to put an oil presssure gauge with a matching sender

 

[whatabudro]

There is a delay, and inaccuracy in electrical gauges, thats why mechanicals gauges are preferred. Bryan

 

[jvencius]

There is a delay, and inaccuracy in electrical gauges, thats why mechanicals gauges are preferred. Bryan

Although, for a FUEL pressure gauge, I'd rather have an electrical unit so that pressurized fuel (or the witches' brew DiPricol uses for their Optix fuel pressure gauge) isn't in the cab.

 

[whatabudro]

Although, for a FUEL pressure gauge, I'd rather have an electrical unit so that pressurized fuel (or the witches' brew DiPricol uses for their Optix fuel pressure gauge) isn't in the cab.

That's why you use an isolator. Its expensive, but its the only way to go IMO

 

[Rex-a-FORD]

There is a delay, and inaccuracy in electrical gauges, thats why mechanicals gauges are preferred. Bryan

I'm going to be installing a fuel pressure gauge in the near future. Just curious if
you happen to know the percentage of inaccuracy.

Also the delay you mention..............is it there for dampening purposes. I've heard there are a lot of spikes in the fuel pressure on our trucks....maybe the dampening effect would be a good thing for long term gauge life?

 

[whatabudro]

The inaccuracy is caused by the conversion to electrical signal from a mechanical signal. This is also the cause in a slight delay.

 

[DaveBen]

I had an electric guage loose it's dampening and the needle would vibrate wildly over a small range. It was very annoying to look at.


Dave

 

[CSIPSD]

I have added a fuel pressure, oil pressure, oil temp and water temp. All electric. What ever slight delay there may be it wont hurt in a FP gauge. I see at idle 70-71 and at WOT it drops to about 64-65. If you need any help PM me.

BTW been gone for a while, Sorry!

 

[Rex-a-FORD]

OK, gettin' ready to buy the stuff I need to install a fuel pressure gauge. I read the FPR fitting is 1/8" pipe thread , but also have read that it's some kind a metric thread.

Anybody know for sure what the thread pitch is on an early 99 for the Fuel pressure gauge fitting?

TIA for your help.