(800) 853-2651
SHOP NOW

cummins oil pr.

H

heavyhaulertoo

Member
I have a 1998 dodge 1 ton with cummins and auto, when it get's warmed up the 15 40 oil goes below 40 psi and the busser goes on. I know the oil pr. dosen't go below 25 lb's with a real gage. Is it a bad preasure swith or to light oil.It has 145000 miles on it. Thank's in advance.
 
Well it should not go below 40 PSI even at ideal with that few miles on it . Don't know who's oil your usen . myself i run Delo 400 15-40 and i hold 45 lbs. on my 95 , my buddy has a 01 and he is wright at 40 hot and he runs Case I H #1 15-40 . If you are dropping oil pressure like that i would (1) be looking into maybe fuel dilution due to leaking injectors , leaking fuel pump past the seal. (2) premature bearing failure , (3) bad senor (4) oil pump failure . And just how far do you have it cranked up , Ya start cranking them up you take away the life of the engine . Been seeing a lot of the young guys around here that have them wound tight with there five inch exhaust bigger charges and programmers maxed out keeping the guy down the street really busy with transmission repairs clutch jobs and engine rebuilds.
 
I agree with tractor vet. My 99 doesn't drop to 25 even at idle. I suggest a few of the dodge forums but the pressure switch is a good candidate. for example, http://www.cumminsforum.com/forum/94-98-powertrain/461382-wacky-oil-psi.html
 
The rpm is at 650, I think it's a little low.I don't see easy way to speed it up. You can idel it to 700rpm and the presure stays up.The gage dose not stop at any thing less then 40 . Just down to 40 then all the way to 0. Real preasure is at 30 hot slow idel. Thanks.
 
You must log in or register to reply here.

Similar threads

Btzj02
Oil/Oil Pressure
Replies
14
Views
2K
Pfields1
P
B
Funny thing about oil filters
2
Replies
27
Views
5K
bison
B
S
2 nice JD 55s and 303 IH to sell - Wellman,IA
Replies
5
Views
2K
Mike Aylward
M
S
98 dodge ram 5.9l won't stay running
2
Replies
31
Views
8K
souNdguy
S
Tractor Parts Tractor Manuals

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Copyright © 1997-2024 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy

Back
Top