Question about 1999 Chrysler 300M

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I have a 99 chrysler 300M, what is the valve that has an oil line connected to it on the RH side of the oil pan? Is it the pressure relief valve? When I pulled my pan off the parts from this were laying in the bottom of the pan. It looks like the line goes from that valve across the front of the engine to the oil filter adaptor. I assumed that the pressure relief valve would be part of the oil pump. Help please

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  • 347 Answers

Oil cooler return line.

Posted on Jul 20, 2017


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Posted on Jan 02, 2017

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SOURCE: Location of the radiator cap for a 99 chrysler 300m

there is no ap on the radiator itself the coolant system cap is on the overflow bottle

Posted on Dec 14, 2008

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SOURCE: Location of water pump in a 1999 chrysler 300m

It's on the left side (driver side). It's by the belts. You can't see the water pump from the top side.
If you want to get to the water pump you have to remove the top radiator cross member, the fan assembly, the crank pulley, the timing covers, and the timing belt.

Posted on Jan 30, 2009

michigan man
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first of all put the car on ramps and for safety put something behind the rear wheel and then start taking the bolts out of the pan and once the bolts are out use a large rubber hammer to get the pan loose do not use anything to pry the pan off and you see your oil pump

Posted on Feb 14, 2009

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SOURCE: im trying to change out my thermostat on my 99 300m chrysler


Posted on May 06, 2009

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SOURCE: 99 chrysler 300m w/3.5L leaks coolant from an

Sounds like one of the freeze plugs has rotted out.

Posted on May 13, 2009

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Apr 27, 2012 | Cars & Trucks

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Hi, I have a small oil leak coming from front right half of car. 2003 300m standard. Any thought on what it may be.

Could be: Oil Pan Gasket. OR the OIL LINE coming out of the oil pan and to the oil cooler in the radiator on the passenger side.. If it is engine oil, and not in a large quantity, like a drip on the driveway, look to the oil pan or the fitting. It is not too bad to replace- dirty, but not bad as it is fairly clear of obstructions. let us know and we'll walk you through it.

Sep 02, 2011 | 2003 Chrysler 300M

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Does the oil pressure switch have to be torqued on a 99 chrysler 300m?

install it with a sealer or teflon tape and snug it in tight but not super tight

Mar 17, 2011 | 2000 Chrysler 300M

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99 300M low side A/C pressure

Generally, low side A/C pressure is measured by a gauge that ranges from 25psi to 45 psi when the compressor is engaged and the engine is running and the a/c is set on its coldest setting.

This is true for most cars on the road today.

Jul 03, 2010 | 1999 Chrysler 300M

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Overheating,can't find thermostat

driver side near bottom of engine

Oct 29, 2009 | 1999 Chrysler 300M

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Replace oil pan gasket 2002 chrysler 300m

The owner of the car should be able to locate and replace oil pan gasket .prepare the equipment to be used .Drain the oil from the oil pan ,spill it to an empty big can that can carry the oil from the oil pan.Then twist the bolts that connect the oil pan to the engine.After removing the bolts then you have take the old gasket off to the oil pan.After taking off the old gasket then you have to replace it with the new oil pan gasket.then return the oil pan with the new gasket. twist the bolt back until the oil pan that connect the oil pan with the engine.And return the drain plug twist until it will not spill.

Sep 30, 2009 | 2001 Chrysler 300M

1 Answer

Oil pump replacement

This MAY seem Strange But It IS ALL necessary for Oil Pump Replacement. And Please Don't Forget to Rate Me as Most Folks Do Not. Thank You and GOOD LUCK with the Oil Pump Job Also

It is necessary to remove the oil pan, oil pickup and chain case cover to service the oil pump rotors. The oil pump pressure relief valve can be serviced by removing the oil pan and oil pickup tube. Refer to Timing Chain Cover Removal and Installation for procedures.

  1. To remove the relief valve, proceed as follows:
  2. Drill a 3.175 mm (1/8 inch) hole into the relief valve retainer cap and insert a self-threading sheet metal screw into cap.
  1. Clamp screw into a vise and while supporting chain case cover, remove cap by tapping chain case cover using a soft hammer. Discard retainer cap and remove spring and relief valve.
  2. Remove oil pump cover screws, and lift off cover.
  3. Remove pump rotors.
  1. Wash all parts in a suitable solvent and inspect carefully for damage or wear.
Oil Pump Assembly
  1. Assemble pump, using new parts as required. Install the inner rotor with chamfer facing the cast iron oil pump cover.
  2. Tighten cover screws to 12 Nm (105 inch lbs.).
  3. Prime oil pump before installation by filling rotor cavity with engine oil.
  4. Install chain case cover. Refer to Timing Chain Cover Installation.
REMOVAL of Timing cover
  1. Disconnect negative cable from battery.
  2. Remove timing chain cover.
REMOVAL Of Oil Pan to gain Access to OIL PUMP
  1. Disconnect negative cable from battery and remove engine oil dipstick.
  2. Raise vehicle on hoist and drain engine oil.
  3. Remove bending brace to transaxle attaching bolt.
  4. Remove bolts attaching dust cover to transaxle housing. Lower dust cover to gain access to oil pan bolts.
  5. Remove oil pan screws and remove oil pan.
  1. Clean surfaces and apply a 1/8 inch bead of Mopar (R) Silicone Rubber Adhesive Sealant or equivalent, at the parting line of the chain case cover and the rear seal retainer.
    1. Use a new pan gasket.
    2. Install pan and tighten screws to 12 Nm (105 inch lbs.).
    3. Install dust shield and bending brace to transaxle housing.
    4. Lower vehicle and install oil dipstick.
    5. Connect negative cable to battery.
    6. Fill crankcase with oil to proper level.

Mar 27, 2009 | 1998 Chrysler Town & Country

1 Answer


first of all put the car on ramps and for safety put something behind the rear wheel and then start taking the bolts out of the pan and once the bolts are out use a large rubber hammer to get the pan loose do not use anything to pry the pan off and you see your oil pump

Feb 14, 2009 | 1999 Chrysler 300M

1 Answer

Location of Oil Pressure Sensor and Oil Pressure Relieve Valve

the oil pressure switch is on pssenger side, lower engine area,beside oil filter, mounted in engine block. The pressure relief valve is in the oil pump, in which case, you have to drop the oil pan,and take off the oil pump.

Jan 31, 2009 | 1989 Toyota Land Cruiser

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