1996 Dodge Ram Low Oil Pressure after Engine Warms Up

BUSTA4691

MEMBER
1996 DODGE RAM
V8
4WD
AUTOMATIC
216,000 MILES

When I start my truck the oil pressure is great 65-70 psi. Then after the engine has reached temp, the pressure starts dropping. At idle the pressure gets as low as 8-10 psi. When I rev up to 3000 rpm the pressure goes up to to about 30 psi. I have verified these pressures with a mechanical gage so it is not the sending unit. I have also replaced the oil pump and checked the intake screen and pick-up tube. Is this a main bearing clearance issue? I'm currently using 10W30 oil, should I switch to 15W40, 20W50, or straight 30W? Also, I have noticed that the engine smokes more during and right after idling. Thanks for the help.

3 Replies

RASMATAZ

MECHANIC
75,992 POSTS

I will use the 30W abd see what happens this will slow the pumping-good thinking don't work-engine bearings excessive clearances

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Monday, March 31st, 2008 AT 12:06 PM

CHOLL999

MEMBER
1 POST

What it is is that your oil screen in your pan gets clogged up and when you are at idle its not getting enough pressure but when you get on it it will. Drop your pan and change your screen. Check for metal shavings and check your main bairings when you have your pan down. If you dont see either one of them then just change the screen. I had the same issue and thats wht worked for me.