low oil pressure at idle, 94 Runner, 3.0 V6 SR5.

ih8seals · 05-15-07, 12:15 PM

i just noticed this morning, when i first started it, every thing is fine. later on when the engine is hot, the oil pressure gauge shows almost all the way to the left(lowest), if i step on the gas, the pressure will clambing up to normal at 2500rpm.

a little more info on the 4Runner, 129k miles, 4wd 5spd, gasket recall was done in april '99(50k miles), oil change 800 miles ago with 10-30 oil and Toyota oil filter at dealer. bearly noticeable rod knock. water temp is fine, idle is flat at 600rpm.

i did a quick forum search before i post, but got mixed results. it can be as easy as replacing the pickup screen to pull the head.

is there any thing i can do before i sent it to the shop?

thanks.

KLF · 05-15-07, 12:37 PM

I never trust OEM gauges. They are hopelessy innacurate and unreliable. Maybe try to get a cheap mechanical gauge and check it.

beatdown83fj60 · 05-15-07, 12:40 PM

In my experience, higher mileage engines will show lower oil pressure at idle and gain when pressing the gas pedal or driving. I'd do an oil pressure test.

HOGWILD · 05-15-07, 04:06 PM

I have same motor in my 93 PU 4x4 and was having same similar issue, changed to 10-40 and adjusted idle to 800 Rpm's when engine was hot. it does not go below the lowest setting on gauge so i call it GTG!! Engine only has 234K on it and if it aint broke do not broke it!!

ih8seals · 05-16-07, 02:43 AM

friend of mine recommended a shop near by, seems to be a honest guy over there. i'm taking it in tomorrow.

thanks all you guys chimed in.

05-15-07, 12:15 PM	#1
ih8seals IH8MUD Rookie Join Date: Apr 2007 Location: so. cal Posts: 61	low oil pressure at idle, 94 Runner, 3.0 V6 SR5. i just noticed this morning, when i first started it, every thing is fine. later on when the engine is hot, the oil pressure gauge shows almost all the way to the left(lowest), if i step on the gas, the pressure will clambing up to normal at 2500rpm. a little more info on the 4Runner, 129k miles, 4wd 5spd, gasket recall was done in april '99(50k miles), oil change 800 miles ago with 10-30 oil and Toyota oil filter at dealer. bearly noticeable rod knock. water temp is fine, idle is flat at 600rpm. i did a quick forum search before i post, but got mixed results. it can be as easy as replacing the pickup screen to pull the head. is there any thing i can do before i sent it to the shop? thanks.

05-15-07, 12:37 PM	#2
KLF IH8MUD Lifer Join Date: Apr 2003 Location: Barrington, NH Posts: 1,884	I never trust OEM gauges. They are hopelessy innacurate and unreliable. Maybe try to get a cheap mechanical gauge and check it. __________________ KB1OSF '87 Toyota xcab SR5 - SAS'd, stuff '98 Lexus ES300 '04 Toyota Highlander

05-15-07, 12:40 PM	#3
beatdown83fj60 IH8MUD Addict Join Date: Jul 2006 Location: Evergreen, Colorado TLCA# Don't have one yet, but Rising Sun CO will be my domain Posts: 614	In my experience, higher mileage engines will show lower oil pressure at idle and gain when pressing the gas pedal or driving. I'd do an oil pressure test. __________________ 86 4Runner, stock, and clean......for now

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05-15-07, 04:06 PM	#4
HOGWILD IH8MUD Junior Join Date: Mar 2007 Location: ABQ Posts: 97	I have same motor in my 93 PU 4x4 and was having same similar issue, changed to 10-40 and adjusted idle to 800 Rpm's when engine was hot. it does not go below the lowest setting on gauge so i call it GTG!! Engine only has 234K on it and if it aint broke do not broke it!!

05-16-07, 02:43 AM	#5
ih8seals IH8MUD Rookie Join Date: Apr 2007 Location: so. cal Posts: 61	friend of mine recommended a shop near by, seems to be a honest guy over there. i'm taking it in tomorrow. thanks all you guys chimed in.