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Low oil pressure solved , dropped the pan #4372173
04/05/17 07:22 AM
04/05/17 07:22 AM
Joined: Oct 2009
Posts: 21
Chicago
groomerz Offline OP
groomerz  Offline OP
Joined: Oct 2009
Posts: 21
Chicago
make a long story short got a used es300 for my newbie driving daughter with 140 k . I'm going thru the car myself and replaced battery, sway bar link, belts, power steering hose and rebuilt power steering pump. Since the engine is a known sludger I put in M1 5/30 high mileage to slowly clean motor. Engine runs like swiss watch. I drive it for a couple weeks to make sure everything is ok. I notice after I exit the highway at idle at stoplight. Oil pressure light pops on for a second. I put in neutral and it goes out. I go home and remove oil sender. Sender is new and had been recently changed. I change sender again as I didn't have a 90 fitting for my pressure tester. Light still flickers after a highway run at idle. So I think I found out why car was sold. Knowing this engine was a known sludger I drain oil and drop pan. There is some varnish only. I remove oil pump and inspect it. the screen is 75% clogged. I start cleaning the screen and realize it is not sludge, I am removing rubber. i then find a circular piece of rubber on the screen. It is the darn pvc grommet. Someone replaced pvc and grommet. Old grommet must have fallen into valve cover where it melted into the oil and congealed on the oil pump screen. put it all back together and drove it for a week and no issues. So if you have low oil pressure always drop the pan and check the pick up screen for debris and the oil pump bolts are tight. The old 740's were known to loosen there pump bolts and cause low oil pressure grenading engines.


2002 Lexus Ls 430 98k
2009 Lexus RX350 90k
1998 Lexus ES300 141K
Re: Low oil pressure solved , dropped the pan [Re: groomerz] #4372181
04/05/17 07:36 AM
04/05/17 07:36 AM
Joined: Feb 2008
Posts: 6,367
Midwest
Pop_Rivit Offline
Pop_Rivit  Offline
Joined: Feb 2008
Posts: 6,367
Midwest
Don't you wonder how many BITOGers would have blamed the oil filter for the problem if you had posted about it before finding the answer? Or claimed that the issue was caused by oil that was too thin?

Re: Low oil pressure solved , dropped the pan [Re: groomerz] #4372182
04/05/17 07:37 AM
04/05/17 07:37 AM
Joined: May 2009
Posts: 12,283
N.H, U.S.A.
ARCOgraphite Offline
ARCOgraphite  Offline
Joined: May 2009
Posts: 12,283
N.H, U.S.A.
Great post, thanks! Love to hear about logical diagnosis of engine problems - or any problem for that matter smile


2014 Nissan Rogue S CVT, OC#10 47272mi-QSUD10W30+5w20 Toughguard Filter; '17 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter
Re: Low oil pressure solved , dropped the pan [Re: groomerz] #4372199
04/05/17 08:03 AM
04/05/17 08:03 AM
Joined: Oct 2015
Posts: 476
MN
WillsYoda Offline
WillsYoda  Offline
Joined: Oct 2015
Posts: 476
MN
I almost lost a PVC grommet into that 1mzfe engine in my car. It would have been a royal pain to get it out had it fallen under the rear valve cover. I was holding on to it for dear life for a good while with a needle nose and finally pulled it out.

Re: Low oil pressure solved , dropped the pan [Re: groomerz] #4372208
04/05/17 08:15 AM
04/05/17 08:15 AM
Joined: Aug 2012
Posts: 472
New York
Recalculating Offline
Recalculating  Offline
Joined: Aug 2012
Posts: 472
New York
This DIY story is a BITOG classic. Good story and ending. Kind of message that keeps us going in the garage on our own appliances. Thanks for the post.


2009 Honda CR-V EX-L 55k
2007 Buick Lacrosse 54k
Re: Low oil pressure solved , dropped the pan [Re: groomerz] #4372209
04/05/17 08:18 AM
04/05/17 08:18 AM
Joined: Dec 2005
Posts: 10,325
Upper Midwest
kschachn Offline
kschachn  Offline
Joined: Dec 2005
Posts: 10,325
Upper Midwest
There is a baffle system on the underside of the valve cover for those engines, even if you drop the PCV grommet into the cover it won't drop into the head. I really can't see how the grommet would "liquefy" in oil either, from what I've seen the polymer gets more rigid rather than softer.

I dropped a grommet once when changing the PCV valve on my 1MZ-FE (before upgrading that cover to the new design) and I was able to fish it out of the baffle underneath. It wasn't particularly easy but it didn't drop into the cams.

Here is a thread I made a while back when I replaced that cover with a new one. Note that there isn't a "free drop" from the PCV hole through the cover:

https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3397521/1MZ-FE_Rear_Valve_Cover_Change
\


1994 BMW 530i, 238K
1996 Honda Accord, 266K
1999 Toyota Sienna, 407K
2000 Toyota ECHO, 280K
Re: Low oil pressure solved , dropped the pan [Re: Recalculating] #4372216
04/05/17 08:25 AM
04/05/17 08:25 AM
Joined: Oct 2014
Posts: 591
On the road Midwest
Ihatetochangeoil Online content
Ihatetochangeoil  Online Content
Joined: Oct 2014
Posts: 591
On the road Midwest
Originally Posted By: Recalculating
This DIY story is a BITOG classic. Good story and ending. Kind of message that keeps us going in the garage on our own appliances. Thanks for the post.


^^ +1 Love a happy ending. Always check the simple stuff. Thanks again.


2003 Lesabre Celebration Edition
2004 Lesabre
2004 Lesabre Celebration Edition
Re: Low oil pressure solved , dropped the pan [Re: groomerz] #4372231
04/05/17 08:46 AM
04/05/17 08:46 AM
Joined: Dec 2005
Posts: 10,325
Upper Midwest
kschachn Offline
kschachn  Offline
Joined: Dec 2005
Posts: 10,325
Upper Midwest
Originally Posted By: groomerz
make a long story short got a used es300 for my newbie driving daughter with 140 k . I'm going thru the car myself and replaced battery, sway bar link, belts, power steering hose and rebuilt power steering pump. Since the engine is a known sludger I put in M1 5/30 high mileage to slowly clean motor. Engine runs like swiss watch. I drive it for a couple weeks to make sure everything is ok. I notice after I exit the highway at idle at stoplight. Oil pressure light pops on for a second. I put in neutral and it goes out. I go home and remove oil sender. Sender is new and had been recently changed. I change sender again as I didn't have a 90 fitting for my pressure tester. Light still flickers after a highway run at idle. So I think I found out why car was sold. Knowing this engine was a known sludger I drain oil and drop pan. There is some varnish only. I remove oil pump and inspect it. the screen is 75% clogged. I start cleaning the screen and realize it is not sludge, I am removing rubber. i then find a circular piece of rubber on the screen. It is the darn pvc grommet. Someone replaced pvc and grommet. Old grommet must have fallen into valve cover where it melted into the oil and congealed on the oil pump screen. put it all back together and drove it for a week and no issues. So if you have low oil pressure always drop the pan and check the pick up screen for debris and the oil pump bolts are tight. The old 740's were known to loosen there pump bolts and cause low oil pressure grenading engines.


You actually removed the oil pump? That isn't easy on a 1MZ-FE.


1994 BMW 530i, 238K
1996 Honda Accord, 266K
1999 Toyota Sienna, 407K
2000 Toyota ECHO, 280K
Re: Low oil pressure solved , dropped the pan [Re: groomerz] #4372251
04/05/17 09:07 AM
04/05/17 09:07 AM
Joined: Mar 2004
Posts: 21,123
Upstate NY
Donald Offline
Donald  Offline
Joined: Mar 2004
Posts: 21,123
Upstate NY
Better than finding chunks of piston skirt like you might find in a Jeep 4.0 engine!


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Low oil pressure solved , dropped the pan [Re: groomerz] #4372265
04/05/17 09:23 AM
04/05/17 09:23 AM
Joined: Mar 2013
Posts: 904
NY
joegreen Offline
joegreen  Offline
Joined: Mar 2013
Posts: 904
NY
I have a 2000 es300. Its been in the family since new and I know that pcv grommet is original. I'll have to check and see if its old and hard and needs replacing.


1978 Chevrolet k20
Engine: Delo 10w30xle
Transmission: Castrol transmax dex/merc

1984 Mercedes-Benz 300 turbo diesel
Engine: Delo 400 15w40le
Re: Low oil pressure solved , dropped the pan [Re: groomerz] #4372292
04/05/17 09:46 AM
04/05/17 09:46 AM
Joined: Feb 2008
Posts: 4,727
Texas
FZ1 Offline
FZ1  Offline
Joined: Feb 2008
Posts: 4,727
Texas
Genius.

Re: Low oil pressure solved , dropped the pan [Re: Donald] #4372312
04/05/17 09:59 AM
04/05/17 09:59 AM
Joined: Apr 2008
Posts: 12,990
Onondaga County
Miller88 Offline
Miller88  Offline
Joined: Apr 2008
Posts: 12,990
Onondaga County
Originally Posted By: Donald
Better than finding chunks of piston skirt like you might find in a Jeep 4.0 engine!


That's what I expected on mine.

Instead I found oil pump bolts and a loose oil pump.

Once the oil pump was put back on , the engine stopped knocking and I had good oil pressure again!


18 Forester 2.5I 6M
00 Jeep Cherokee
01 Ford F-350 XL 4x4 5M
Re: Low oil pressure solved , dropped the pan [Re: groomerz] #4372348
04/05/17 10:46 AM
04/05/17 10:46 AM
Joined: Nov 2016
Posts: 168
Tennessee
FlyingVan Offline
FlyingVan  Offline
Joined: Nov 2016
Posts: 168
Tennessee
Ages ago I had a 1991 Ford Ranger that was taking for ever to build up oil pressure when cold. I started with the obvious, but nothing helped. Then I was going to change the oil pump. When I dropped the pan I found the pick up screen almost totally clogged by bits and pieces of either rubber or silicone, whatever the pan gasket was made out of (I forgot since it has been so long). The gasket dried up and cracked and it ended up in the oil pan, interestingly enough, oil wasn't leaking anywhere. I tried to clean the screen, but I wasn't too successful, so I ended up replacing the pick up tube. I got rid of that truck many many years after this and as of last year it was still on the road.


2015 Mercedes Sprinter, 2.1 4cyl diesel, 42k
2011 Volkswagen Jetta Sportwagen TDI, 100k
2004 Dodge Sprinter 2.7 5cyl diesel,779k
Except for chainsaws and lawnmowers, no sparkplugs needed in my stable.
Re: Low oil pressure solved , dropped the pan [Re: groomerz] #4372374
04/05/17 11:01 AM
04/05/17 11:01 AM
Joined: Dec 2006
Posts: 8,034
Canuck living in California
KrisZ Offline
KrisZ  Offline
Joined: Dec 2006
Posts: 8,034
Canuck living in California
I'm surprised and impressed at the same time that such a problem could be nailed down by a simple pan drop without doing a series of UOAs. grin


Seriously, great job and thanks for sharing!. thumbsup


2015 Dodge Grand Caravan-27k miles.
2006 Mazda 3-163k miles
Re: Low oil pressure solved , dropped the pan [Re: groomerz] #4373260
04/06/17 01:21 PM
04/06/17 01:21 PM
Joined: Feb 2010
Posts: 4,838
Central Texas
sleddriver Offline
sleddriver  Offline
Joined: Feb 2010
Posts: 4,838
Central Texas
thumbsup


1998 Volvo V70 T5 228,880 mi. Original Owner.
M1 10W-30 HM
"It's never a mistake to buy tools, defined broadly. They're not a cost, they're an investment." - J.B. Peterson
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