03 Dodge Ram 1500 5.7 hemi oil pressure loss

Asked by Aug 07, 2016 at 08:54 PM about the 2003 Dodge Ram 1500 Laramie Quad Cab SB 4WD

Question type: Maintenance & Repair

I am working on an 03 ram 1500 5.7 hemi. Same as everybody else it has loss of oil pressure at idle. I have replaced oil pump, oil pressure sending unit twice, used a mopar brand 090 oil filter, after doing oil pump pressure was fine until engine warmed up. Then dropped pressure again. The very first time it happened was out of the blue dropped to 0 while driving engine shut down coasted to side and called tow truck. If you bump idle to 1000 rpm oil pressure guage reads normal at about 850 it drops to 0 again. I have same problem using 10w30 or 5w20. Any ideas?

2 Answers

17,270

Try adding some Lucas Engine Oil Stablizer to oil.

Update 8-8-16 Hooked up mechanical gauge, it in fact has less than 3-5 psi at idle and 20-25 psi at rev limit in park (around 3800 rpm). No knocking or ticking makes me think it is not bearings, is there anything in the valve timing or possibly a solenoid for cyl cut out that may be stuck open?

Your Answer

Add photo

Related Questions

  • Loss of oil pressure at idle,5.7 hemi 3 answers

    2009 dodge ram 1500 4x4,5.7 hemi.125,000 miles. Recently loss of oil pressure at idle,in gear,stopped. Drops down to 5 psi. At 70 mph, gauge reads 40-45 psi. Changed oil pressure sensor with oem. Fi...

    Dodge Ram 1500

    -

    Maintenance & Repair

  • What are some causes of oil pressure loss? 30 answers

    Losing oil pressure but it comes back. Could it be a sensor or is it a bigger problem?

    2001 Dodge Ram 1500 4 Dr SLT Plus 4WD Quad Cab SB

    -

    Maintenance & Repair

  • 2007 dodge 5.7 hemi threw a rod 3 answers

    My 2007 dodge 1500 has 79000 miles on it and has been well taken care of. Regular oil changes and maintainance done periodically. I was driving the truck 3 weeks ago when all the sudden it started to ...

    2007 Dodge Ram 1500 SLT Quad Cab

    -

    Maintenance & Repair

  • Loss of Oil Pressure 1 answer

    2005 Ram 1500 4.7 Ltr. V8. After changing the valve cover gaskets the Oil Pressure Gauge will drop after reaching temperature and coming to a complete stop. OP gauge will rise again after pressing ...

    2005 Dodge Ram 1500 SLT Quad Cab SB

    -

    Maintenance & Repair

  • Hemi MDS 228 answers

    I was wondering if anyone other than me absolutely hates the MDS system in their Hemi engines. Does anyone know how to disable it without having to by a Diablo Predator tuner? I know you can cut and c...

    Dodge Ram 1500

    -

    Car Customization

Search Dodge Ram 1500 Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Dodge Ram 1500 Experts

#1 Dan Connell
Dan Connell
Reputation 5,650
#2 pudgybear
pudgybear
Reputation 5,300
#3 dandyoun
dandyoun
Reputation 4,930
View All

Related Models For Sale

Used Ford F-150
3,218 Great Deals out of 205,090 listings starting at $1,779
Used Chevrolet Silverado 1500
2,743 Great Deals out of 149,174 listings starting at $1,500
Used Dodge Ram 2500
186 Great Deals out of 5,707 listings starting at $2,900
Used GMC Sierra 1500
1,057 Great Deals out of 58,736 listings starting at $1,599
Used Toyota Tundra
643 Great Deals out of 27,763 listings starting at $3,200
Used Toyota Tacoma
712 Great Deals out of 32,123 listings starting at $2,000
Used Ford F-250 Super Duty
476 Great Deals out of 41,914 listings starting at $1,999
Used Dodge Dakota
128 Great Deals out of 4,388 listings starting at $995
Used Nissan Titan
245 Great Deals out of 15,281 listings starting at $3,999
Used Dodge Ram 3500
83 Great Deals out of 2,377 listings starting at $5,000
Used Chevrolet Tahoe
854 Great Deals out of 28,369 listings starting at $1,700
Used Jeep Grand Cherokee
1,001 Great Deals out of 65,972 listings starting at $1,500

Used Cars For Sale

2006 Dodge Ram 1500 Laramie Quad Cab SB 4WD For Sale
7 Great Deals out of 78 listings starting at $5,950