Question about 2006 Mitsubishi Outlander

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Oil pump snoise at 1000 rpm

Does it have a bearing inside that could be worn? no oil lights come on

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Oil pumps are in the sump and run in oil
there is no bearing as such as the shaft and gears are just a close fit in the cast housing which is lubricated by passing oil under pressure
as for a noise, if you can hear it there will be little or no oil pressure
However water pumps bearings regularly fail and you will hear it. mostly a sort of tinny rattling noise or a low grumble.

Posted on May 13, 2015

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Some of the reasons are:
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2) a plugged oil pump pick-up screen.
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When sitting at a red light my Mazda 3 idles real funny...vibrating almost sounding like a cats purr?


2006 Mazda 3


Applies to 2006 Mazda Mazda3:
Available engines
4 Cylinders 2.0L MFI DOHC
4 Cylinders 2.3L MFI DOHC


Could be a number of things - you're going to end up checking the entire car.

Off the top of my head:
a) exhaust component has rusted loose (usually catalytic converter heat shield). Any loose exhaust component (hanger/muffler, etc.) will vibrate at idle.
b) glove compartment door - loose hinge
c) motor mount - rubber part of metal/rubber mount vibrates loose & falls out.
d) transmission mount - ditto.

The Maintenance manual for your car says:

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1 Inspect Main (Crankshaft) Bearing - Excessive Bearing Clearance.
1 Inspect Rod Bearing - Incorrect Rod or Main Bearing Clearances.
2 Inspect Rocker Arm - Worn or Incorrectly Adjusted Rocker Arm(s).
3 Inspect Piston Ring Set - Worn or Broken Piston Rings.
4 Inspect Piston - Worn, Damaged, or Faulty Piston.
5 Inspect Fuel Line Assembly - Fuel Line Leaking.
6 Inspect Hose Clamp - Loose or Missing Fuel Line Clamps.

Tapping noise at idle
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1 Inspect Valve Lifter - Insufficient Oil Supply.
2 Inspect Fan Blade - Broken, Missing, or Faulty Fan Blade(s).
3 Inspect Oil Pump Screen - Clogged Oil Pump Screen.
4 Inspect Oil Pump Drive Gear - Damaged or Faulty Oil Pump Drive Gear.
5 Inspect Exhaust Valve(s) - Burned, Worn, or Sticking Exhaust Valves.
6 Inspect Oil(Crankcase)Capacity - Lifters Need Additional Lubrication.
7 Inspect Oil Filler Cap - Oil Filler Cap Damaged or Missing.
8 Inspect Oil Pump - Damaged or Faulty Oil Pump.
9 Inspect Oil Filter - Old or Clogged Oil Filter.
10 Inspect Oil FLow Check Valve - Damaged or Faulty Oil FLow Check Valve Caused Loss of Oil Pressure.

Vibration while Accelerating
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1 Inspect CV Half-Shaft (Remanufactured) CCT - Worn or Damaged CV Half-Shaft.

vibration while braking
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1 Inspect Brake Rotor - Warped or Uneven Brake Rotor Surface.

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2 Inspect Ball Joint-Lower - Worn, Damaged, or Faulty Ball Joint.
3 Inspect Ball Joint-UPPER - Worn, Damaged, or Faulty Ball Joint.
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1 Inspect Wheel Bearing-Rear - Worn, Dry or Damaged Wheel Bearing.

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1 Inspect Wheel Bearing-Front - Incorrectly Tightened or Installed Wheel Bearing.

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1 Answer

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If the external gauge shows normal pressure, contrary to what the dash gauge tells you, blow out the sender passageway and replace the sender, then add marvel oil at each oil change as it will help dissolve any crud accumulated inside the oil system.

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1 Answer

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1 Answer

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1 Answer

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