Question about 1985 Ford Mustang

1 Answer

Low oil pressure - oil pump

1985 Ford Thunderbird 5.0(L)/302 - base model (not Elan or Fila). Can I replace the oil pump with the engine in vehicle? NOTE: Oil pan has front and rear sump. I have all tools needed to do repair. Also - what is the accepted oil pressure of this engine?

Thank you for your help.

Posted by on

  • jrestivo Jan 28, 2009

    Thank you ccn7 - really appreciate the info - I thought I would have to
    pull the engine because of the dual sump. It's been a long time since I've had to do major engine work. Once again - thank you.


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has answered 1,000 questions.

  • Master
  • 1,118 Answers

Well its been a while sense i have done one of thies, but i believe you have to unbolt both motor mounts and jack engine up as far as you can to get the pan off. if you can't get the pan off after you got engine jacked up as far as you can, you will have to unbolt front pump and take them both out at one time. and samething when you put it back together.if anything the picup tube is what will give you trouble, thats why you have to unbolt the pump.

Posted on Jan 28, 2009

  • ccn7 Jan 28, 2009

    also i forgot to mention as long as you got the pan off it might be a good idea to pull 1 or 2 rod caps and main caps and take a look at them, they have ben known to wear down to the copper color if oil pump went out or very low oil pressure for awhile. also like i said its been a while sense i did one. if you run into a problem, give me a holler and i'll get back to you as quick as i can.


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:

2 Answers

Need to know where the location of fuel pump is on 85 t -bird

If fuel injected- Central Fuel Injection, as I think it was, the electric pump should be in the gas tank. If still carbureted, it will have a mechanical fuel pump on the engine.

Mar 22, 2013 | 1985 Ford Thunderbird

1 Answer

How to replace oil pump on 1985 ford 3/4 ton truck with small v8 motor

your can either pull the engine to do it, or if you can get or have enough clearnce to drain the oil and remove the oil pan you can do it with the engine still in ,i have done it both way's , eaither way the pan has to come down or off to get to the oil pump. if you don't have enough room when leaving the engine in you can take the motor mount bolts out and use a block of wood and gently jack the engine up to get the room you need to pull the pan down and to get in there and do the work.

Dec 20, 2012 | Ford Cars & Trucks

1 Answer

How to put new oil pump in 4.6 thunderbird

You will need a service manual (Chilton's Haynes) for all of the correct torque specs and the correct disassembly/assembly sequences. That being said, the oil pump is a big job to change. You will need to disconnect the motor mounts and transmission mounts and raise the engine up so that the oil pan will clear the crossmember. If you can't get clearance doing that, the engine will need to come out. I would check the oil pressure with a mechanical guage to ensure that it indeed as low as it appears to be before beginning the endeavor.

Jun 24, 2011 | 1995 Ford Thunderbird

2 Answers

1986 ford thunderbird oil gauge on and beeping

I would check that the engine oil level is high, then I would check that the pressure is high enough by plugging a gauge into the oil pressure switch socket after removing the oil pressure switch.

There is a possibility that the oil pressure switch is bad, or the oil pump has failed, unfortunately.

Oct 13, 2010 | 1986 Ford Thunderbird

1 Answer

Low oil pressure where is oil pump

The oil pump is located inside the oil pan and is mounted to the engine block.
The removal of the oil pan is the only way to gain access to the oil pump.

The pump is driven by the end of the distibutor shaft which in turn is driven by the rotation of the cam shaft. There's a pickup tube that connects to the oil pump that goes to the lowest point of the oil pan, where the oil is drawn into the pump to lubircate the engine.
All of these are internal engine functions.

Hope this helps you with your question.

Jun 10, 2010 | 1985 Ford LTD

1 Answer

Location of oil pump on a 3.8 liter ford

It should be inside the oil pan. You will need to somehow get the oil
pan offf, in order to remove the oil pump. Make sure you check the
oil pressure to make sure that is the problem, before you go through
all that trouble getting to it?Good luck.

Mar 29, 2010 | 1985 Ford Thunderbird

3 Answers

What does a low oil pressure alarm mean

Means your engine oil pressure is low due to faulty oil pressure sensor which is located on top or the oil filter housing. It could also mean low on engine oil due to a leak in the engine somewhere or past due oil changed. It could also mean a faulty oil pump, weak oil pump, or restricted oil passage due to sludge.

Here is the procedure for testing for oil pressure, which lists the possible causes of the pressure light coming on.

The following can cause low or no oil pressure:
1.Low oil level -- fill to the full mark on the oil level indicator.
2.Incorrect or malfunctioning oil pressure Switch -- replace the oil pressure switch.
3.Incorrect or malfunctioning oil pressure gauge -- replace the oil pressure gauge.
4.Improper oil viscosity or diluted oil Install oil of proper viscosity for expected temperature.Install new oil if it is diluted.
5.The oil pump is worn or dirty -- clean or replace the oil pump.

6.The oil filter is plugged -- replace the oil filter.

7.The oil pickup screen is loose or plugged -- replace the oil pickup screen.

8.A hole in the oil pickup tube -- replace the oil pickup tube.

9.Excessive bearing clearance -- replace the bearings.
Cracked, porous, or plugged oil galleries -- repair or replace the engine block.
10.The gallery plugs are missing or improperly installed -- install or repair as necessary.

11.The pressure regulator valve is stuck.Check the pressure regulator valve for sticking in the bore.Check the bore for scoring and burrs.
12.The camshaft is worn or poorly machined -- replace the camshaft.

13.Worn valve guides -- repair as needed.

If the vehicle has low oil pressure perform the following tests.
Check the oil level.
Raise the vehicle and remove the oil filter.

Start the engine and check the overall oil pressure, the oil pressure switch, and for noisy lifters.
The engine should be at operating temperature before checking the oil pressure. The oil pressure should be approximately 414 kPa (60 psi) at 1,850 RPM using 5W-30 engine oil.

If adequate oil pressure is indicated, check the oil pressure switch.

If a low reading is indicated, press the valve on the tester base to isolate the oil pump and/or its components from the lubricating system. An adequate reading at this time indicates a good pump and the previous low pressure was due to worn bearings, etc. A low reading while pressing the valve would indicate a faulty pump.

Without the tools to test the pressure, about all I might suggest is trying another oil filter brand, to see if you can get more pressure. It sounds like the sensor is working properly.Please let me know what you find out. Keep me posted and be glad to help you get your Montana running 100%. please rate. Oil pressure test kit J 25078-c is needed to test the oil pressure and can be loaned out in most auto parts store like Auto Zone or Parts Source.

Jan 10, 2010 | 2001 Pontiac Montana

1 Answer

Loosing oil pressure after car is warm, thicker oil is not helping

Your problem unfortunately is bearing related. When any oil is cold (regardless of rating) it is heavier than hot. Therefore, cold, with marginal engine crankshaft bearings, you have less bleed off around the bearing faces. Once warmed up, the oil is thinner and prone to more bleed off, lowering pressure. Once pressure is low enough you will begin to hear lifter noise, later, bearing knock. If in the early stages of failure, replacing engine bearings is an option provided that only rod bearings are worn (can be generally done in car. If mains are involved, engine needs to be removed. Oil pump should be replaced during this repair...changing oil pump without repairing the bearings will not fix the problem.

May 19, 2009 | 1994 Ford Thunderbird

1 Answer

Low oil pressure

Probably 302 (5.0L) if not 3.8L v-6.
Anyway, fresh oil & new filter is a good place to start, then a little running down the highway may help loosen things up a bit. You can try adding a bottle of lucas, or similar, but personally I don't use that stuff. After sitting that long, oil will be pretty contaminated, so do that first, then I'd do it again after putting some miles on it.

Apr 20, 2009 | 1985 Ford Thunderbird

1 Answer

I cracked my oil pan and i need to know if i need to take out my engin to change it i'm low on cash i need help

here's v6 3.8L

Section 03-01A: Engine, 3.8L 1996 Thunderbird, Cougar Workshop Manual
IN-VEHICLE SERVICE Oil Pan/Oil Pump Screen Cover and Tube Removal
  1. Disconnect battery ground cable (14301).
  1. Remove air cleaner outlet tube (9B659). Refer to Section 03-12 .
  1. Remove two bolts retaining radiator upper sight shield (8C291) and position radiator upper sight shield aside.
  1. Remove hood weather seal.
  1. Remove windshield wipers.
  1. Remove LH cowl vent screen and wiper module.
  1. Install Three Bar Engine Support D88L-6000-A or equivalent.
  1. Raise vehicle on a hoist. Refer to Section 00-02 .
  1. Remove front engine support insulator through-bolts.
  1. Partially lower vehicle.
  1. Raise engine and support with Three Bar Engine Support D88L-6000-A or equivalent.
  1. Raise vehicle.
  1. Remove starter motor (11002).
  1. Position drain pan.
  1. Drain engine oil.
  1. Remove oil bypass filter (6714).
  1. Remove starter motor wire, ground strap and automatic transmission oil cooler lines.
  1. Remove oil pan-to-bell housing bolts and bolts at crankshaft position sensor lower shield.
  1. Remove remaining oil pan retaining bolts.
  1. Remove steering shaft pinch bolt and separate steering shaft.
  1. Position transmission jack under front sub-frame (5C145).
  1. Remove six rearward bolts on front sub-frame. Loosen two forward front sub-frame bolts.
  1. Remove lower shock absorber-to-front suspension lower arm bolts and nuts (both sides).
  1. Lower front sub-frame.
  1. Remove oil pan (6675).
  1. Empty any residual oil from oil pan.
  1. Remove oil pump screen cover and tube retainer bolts and support bracket nut. Remove oil pump screen cover and tube (6622) and discard oil pump inlet tube gasket (6626).

Apr 14, 2009 | 1996 Ford Thunderbird LX

Not finding what you are looking for?
Cars & Trucks Logo

215 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

64052 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21990 Answers


Level 3 Expert

5331 Answers

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

Answer questions

Manuals & User Guides