Oil Press gauge mod - Diesel Forum

Dieselfever78 · 06-25-2007, 06:46 PM

Does anyone have the part number for the oil pressure sender out of the 1980 400 cu in that you use to make the idiot light gauge into a real one.

Then alls I have to do is solder the jumper over the 20 ohm resister and it will work, correct?

Thanks in advance

-Michael

BlueMule · 06-25-2007, 06:52 PM

Sheesh.... I didnt think anyone ever dug that deep into the old writeups. There are actually two of them writeups in there, One for IDI's and one for PSD. I think one of them has the part number.

I also seem to remember that I didnt work all that well. Better than the idiot gauge we have, but not by much.

Dieselfever78 · 06-26-2007, 01:19 AM

I've know about it for a long time, like since I joined. I was gonna try it and see how well it did. Like you said better than the idiot light and I won't have to buy another gauge and mount it

I just found it again befor this post, and I was also wondering how does it act if I don't do the jumper right away?

-Michael

Patrick Feeley · 06-26-2007, 01:55 AM

I wouldn't bother. I did it and the range isn't that great and doesn't match well with the factory gauge. I ended up getting a real gauge (and then got rid of it too). Cheers!

Dieselfever78 · 06-26-2007, 11:03 AM

Patrick, could you explain. Did it read high or low or did it just not have a 'wide' range and only stayed in one little area?

I think that it might be able to be fine tuned for a specific truck with some resistors and a real oil gauge maybe

-Michael

Patrick Feeley · 06-30-2007, 01:41 AM

Sorry for the tardiness! When I did it the gauge would be pegged when cold, and maybe only have a range of 1/2 to 3/4 scale when at normal temps (if I'm remembering correctly). That may be good enough for some folks (and it's a bit better than the factory setup). There was quite a bit of discussion on this "back-in-the-day" on the forums. I don't think anyone ever found a pressure transducer that had the required range to suit the factory gauge. Cheers!

speediesel · 07-02-2007, 03:17 AM

I guess if the gauge reads you have enough pressure. Seems like enough info to me.

Dieselfever78 · 07-03-2007, 01:29 AM

[ QUOTE ]
I guess if the gauge reads you have enough pressure. Seems like enough info to me.

[/ QUOTE ]
Thats all I'm after. I have a 0-100psi mechanical gauge I bought from Autozone and it will reach 100psi while cold at higher rpms, but when it warms up and the oil thins out it will read less. just like you described.

-Michael