Question about 2003 Toyota Sequoia

1 Answer

Oil Pressure Not wanting to step on you, the issue with the Sequoia is really fixed by replacing the printed circuit board behind the inst cluster, thusly replacing the combination meter ECU. If you want, please comment back to the Client, he needs P/N 83291-0C012-RP if he desires a permanent repair... BTW...The "Experts not seeing comments is being looked into". I had two problems -- erradic oil pressure gage and low pressure at idle. I replaced the sender which fixed the erradic problem. Now oil pressure tracks with rpm and temp. Higher RPM - higher pressure; and higher pressure when engine is cold -- lower when warm. My issue now is that at idle and especially in drive, if the engine rpm is at ~800, the oil pressure indicater is at 1/4. If the engine rpm drops to ~700, the oil pressure gage begins a slow creep down to the bottom of the range and even a little below "L". Sometimes it will creep back up on its own or if I pull it out of drive into neutral, it will come back up. My question is, I really dont want to spend the $350+ on the ECU to fix this -- am I at risk of damaging the engine?

Posted by on

  • Steve Kitchell May 24, 2009

    Can you tell me what the normal oil pressure range should be and the best way yo test normal pump operation? Also, do you know the proper idle rpm range both in and out of drive? thanks



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 6,784 Answers

If this is truly a ecu issue, it will not directly affect the true nature of the pressure at all. its just a logical read out due to the malfunctioning ecu but, the pump action is normal. if the engine is not showing signs of low or high pressure and the oil level is optimal, i see no reason to replace the ecu at this time. if your funds are limited, this isn't hurting anything at this time. its a fictitous reading due to the ECu issue.

Be sure to test the oil pumps properties. if they are ok, i woudl hold off on the ECu repair.

Posted on May 21, 2009

  • Michael Masters
    Michael Masters May 24, 2009

    First test the engine oil pressure by removing the sending
    unit and temporarily installing a mechanical oil gauge. Run the engine and
    note pressure at normal engine temperature; at idle 15 to 20 pounds is okay.
    Raise the engine speed to approximately 2000 rpm. The pressure should be 40
    to 50 pounds. If the readings you get are lower, you may have a oil pump that
    needs replacing.

  • Michael Masters
    Michael Masters May 24, 2009

    To check for these conditions a manual oil pressure gauge
    is needed. Locate
    the oil pressure port near the engine oil filter. Remove the sender or switch
    and install the oil pressure gauge. Start the engine and observe the gauge.



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

No oil pressure on dash gauge with engine not running scanner shows 100 psi have good gound good 5volt refernce voltage any ideas

Intstrument cluster printed circuit board. They are famous for crapping out. Replace instrument cluster.

Dec 14, 2010 | Dodge Ram 2500 Cars & Trucks

2 Answers

Was driving last night notice oil pressure drop to 0 . Check the oil this morning it is fine and the gauge is reading 40. What can be the problem

Pretty common problem with these. Here's a guide to learn how to fix GM instrument clusters yourself, I used it to fix mine and it worked great.How to guide for Tahoe instrument cluster repair

Sep 06, 2010 | 2005 Chevrolet Tahoe

2 Answers

Fuel gauge and oil pressure gauge dont work on my 2005 chevy tailblazer

Pretty common problem with these. Here's a guide to learn how to fix GM instrument clusters yourself, I used it to fix mine and it worked great.How to guide for Trailblazer instrument cluster repair

Sep 02, 2010 | 2005 Chevrolet TrailBlazer

2 Answers

Oil light flickers when in idle. Oil on dip stick measures fine.

install a mechanical guage to test the actual pressure, if its fine the sending unit is faulty, if nor remove the oil pan and check the oil pickup for blockage,

May 24, 2010 | 1999 Chrysler Concorde

1 Answer

2003 sequoia,The oil pressure gauge reads low and floats around. I had an earlier sequoia that the sending unit was replaced for the same problem. Is there a SSC on this problem?

There is no Special Service Campaign on that issue. There is, however, a TSB on that issue, and the fix is to replace the sending unit and the gauge.

Nov 09, 2009 | 2003 Toyota Sequoia

1 Answer

02 jeep grand cherokee 4.7 eng

Hook up a manifold gauge (mechanical temporary use gauge, used by mechanics) and test the oil pressure. You probably need to replace the gauge. The computer sends info through a printed circuit board behind gauge cluster and sometimes you have to replace the whole gauge cluster.

Feb 05, 2009 | Daewoo Leganza Cars & Trucks

3 Answers

Inst cluster 1994 Linc Cont Exe 3.8 Is this a mechanal oil pump

i had the exact same problem with dcm and oil and this is a sure way to resolve it. disassemble the dash and get to the wires in the back of the gadges. disconnect and clean connections. i had the beeping six to ten times a day and ithis fix it.

Jan 28, 2009 | 1994 Lincoln Continental

1 Answer

Oil Pressure

Sure, Thanks Ed,

I just reported something that I knew, I will report the right solution to the user,

If you see that I write imprecisions feel free to post your comment in my solutions,

I will report your comment to the user.

Nov 24, 2008 | 2003 Toyota Sequoia

1 Answer

2002 Chevy Trailblazer Oil Pressure

Common issue on teh 03-06 Trailblazer instrument clusters, it's caused by failing stepper motors on the cluster's circuit board. It is fixable, check out this page for more on how to get it fixed - Trailblazer oil gauge broken

Nov 23, 2008 | 2002 Chevrolet Trailblazer Ext

Not finding what you are looking for?
2003 Toyota Sequoia Logo

Related Topics:

54 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts


Level 3 Expert

76164 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8273 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides