I have a 1990 ford f250 it keeps loseing oil pressure at idail and motor starts to nock but only in gear please help driving me crazy

Question 1

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1answer

My oil gauge is going back and forth on my 1996 Ford F250, I have change the oil coolant sensor. When I drive a few miles the oil gauge goes crazy. Need help? I have change the oil sending unit also.

The oil temperature sensor could be in the oil level sender unit - it depends how many connecting wires there are. If it is in there it would not be as accurate as if it is placed in the main oil gallery, perhaps combined with the oil pressure sensor.

I advise you to re-read your vehicle handbook and ensure you know the exact functions of the instruments. Often the oil gauge is a level gauge only until the engine is started and then becomes an oil pressure gauge, therefore a fluctuating gauge might indicate a fluctuating oil pressure...

If that is so, worrying about it now could save worrying more expensively later.

Mar 06, 2017 • Ford Cars & Trucks

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1answer

I have a 1995 mazda protege dx with a 1.5 litter that just started nocking yesterday I don't know what it is it has 173,245 miles on it and smoke when I get on it a little and at a idle the check oil...

Sounds like a big end bearing has gone . Loose bearing (knock) smoke (excessive oil overloading oil rings) low oil pressure ( pump cannot keep up the pressure). Sorry but if it is a replacement motor is the only answer.

Feb 07, 2013 • Cars & Trucks

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1answer

99 silverado oil presure problem oil pump in front of engine

They may be right. Too much clearance on the bearings is where you lose oil pressure, or so I've heard. If you bought it used, someone may have once run old, dirty oil in it too long, or let it run low. You could drop the oil pan and check the bearings or replace them.

May 29, 2012 • 1999 Chevrolet Silverado 1500

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1answer

1990 ford f250 5 speed zf trans just had transmission rebuilt truck still jumps when i take off in second

Check your motor and transmission mounts. Not much into the slave cylinder, but on hydraulic cylinders there is sometimes a run-out where the hydraulic pressure is too weak to do the job. This sometimes happens with the shaft leaking internally and allowing pressure to bypass the valving. But you have a different one, is it good?

Consider a shock absorber. The first push it can make, then it does not refill the void fast enough to make the second push. Because of engine reving, you jump from 1 to 2 quicker than 2 to 3 gear. The slave cylinder does not have enough time to refresh. Maybe look at the weight of the oil in the slave cylinder.

Mar 30, 2012 • 1990 Ford F150

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2answers

I have a 7.3 1990 ford pu driving to work and it quit running cranks but won't start

gas or diesel: Diesel, fuel shutoff switch Gas, ignition module

Oct 21, 2011 • 1990 Ford F250

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1answer

Y TRUCK IS LOSING OIL PRESSURE BUT SOMETIMES ITS OK 4 ALITTLE WHILE IS IT MY OIL PUMP GOING OUT?

Normaly an oil pump won't fluxuate output, I would suspect a faulty oil pressure sensor first. You could also have the pressure tested.
A problem with the Ford modular motors had was sludging due to longer intervals then normal oil changes , Ford went to recommending 5w20 Synthetic Blend oil in later model years to address this problem.

Apr 12, 2011 • 2001 Ford F250 Super Duty Super Cab

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1answer

1995 ford f250 diesel won't start. I was driving down the road it just died. After i got it towed home i checked the fuel pressure nothing. So i changed the pump, still no start but its getting fuel. so i...

Did you check the fuel pressure? Also I have found the fuel pressure regulator screen getting gunked up to cause random shut off while driving. Prior to that it would start losing mileage and feeling sluggish.

Jan 17, 2018 • 1995 Ford F250

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1answer

I have a 90 f250 when driving the oil pressure will drop and engine light comes on when i let off the gas it will go back to normal could this be an oil sending unit or bad oil pump

check your engine by diagnostic tools. fcus on what will be codes read by the scan tool

Jun 19, 2010 • 1990 Ford F250

2helpful

1answer

High pressure oil pump leak.

the high pressure pump provides the pressure to your injectors so the diesel luel can be injected at high pressure. You should fix this immediately. Call your dealer and ask for some help from Ford on the repair cost ahead of the repair. See what they will do.

May 27, 2009 • 2003 Ford F250 Super Duty Crew Cab

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2answers

Truck under water

You will probably want to make sure the air intake system is dry, prehaps blow it out with some compressed air. You will also want to drain the oil and gas and put new in to make sure no water was mixed in and be sure the cylinders are empty of anything before starting (google how, you should find out there). Eletronics might have to be replaced and the computer if there is one.

Oct 20, 2008 • 1990 Ford F250

Question 2

Jason McDonald

Contributor 9 Answers
Posted on May 12, 2016

Jason McDonald

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Joined: Jan 30, 2013

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Engine bearings worn and need replacing

Anonymous May 13, 2016

Thanks alot for the help Thanks alot for the help

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Answer 2 · 7/11/2009 12:00:00 AM

Anonymous

1865 Answers
Posted on Jul 11, 2009

SOURCE: oil pressure fluctuating

The sensor could be failing to read the lower pressure when the engine RPM slows down. Or the pump could be failing. I would replace the sensor and see if that doesn't correct the problem

Anonymous

702 Answers
Posted on Jul 13, 2008

SOURCE: 1989 Ford Mustang GT Drop in Oil Pressure gage

I hate be the bearer of bad news but it sounds like you bottom end bearings are getting worn out. You have excessive bearing clearances causing your drop in oil pressure.

mike loshbough

1011 Answers
Posted on Feb 22, 2009

SOURCE: i have a 2000 dodge durango 360 that once it runs loses oil press

if there is no knocking noise then replace the oil sending switch this should fix your problem let me know

Anonymous

521 Answers
Posted on Aug 04, 2009

SOURCE: How do i fix my power window the motor runs but

the regulator assy has broken. remove interiopr door panel, disconnect all elctrical wires, remove a cple bolts and slid the regulator out. installtion is reverse of removal.

Ricky Peters

2620 Answers
Posted on Jan 14, 2012

SOURCE: My 1990 Ford F250 won't start but has new starter, battery and ignition switch

Have you checked for 12 volts coming in going out of the the starter solenoid switch that is mounted passenger side fenderwell.

Testimonial: "No but that is logical; thanks! You can start the truck by 'jumping out' that same solenoid."

Answer 3 · 7/11/2009 12:00:00 AM

Anonymous

1865 Answers
Posted on Jul 11, 2009

SOURCE: oil pressure fluctuating

The sensor could be failing to read the lower pressure when the engine RPM slows down. Or the pump could be failing. I would replace the sensor and see if that doesn't correct the problem

Answer 4 · 7/13/2008 12:00:00 AM

Anonymous

702 Answers
Posted on Jul 13, 2008

SOURCE: 1989 Ford Mustang GT Drop in Oil Pressure gage

I hate be the bearer of bad news but it sounds like you bottom end bearings are getting worn out. You have excessive bearing clearances causing your drop in oil pressure.

Answer 5 · 2/22/2009 12:00:00 AM

mike loshbough

1011 Answers
Posted on Feb 22, 2009

SOURCE: i have a 2000 dodge durango 360 that once it runs loses oil press

if there is no knocking noise then replace the oil sending switch this should fix your problem let me know

Answer 6 · 8/4/2009 12:00:00 AM

Anonymous

521 Answers
Posted on Aug 04, 2009

SOURCE: How do i fix my power window the motor runs but

the regulator assy has broken. remove interiopr door panel, disconnect all elctrical wires, remove a cple bolts and slid the regulator out. installtion is reverse of removal.

Answer 7 · 1/14/2012 12:00:00 AM

Ricky Peters

2620 Answers
Posted on Jan 14, 2012

SOURCE: My 1990 Ford F250 won't start but has new starter, battery and ignition switch

Have you checked for 12 volts coming in going out of the the starter solenoid switch that is mounted passenger side fenderwell.

Testimonial: "No but that is logical; thanks! You can start the truck by 'jumping out' that same solenoid."

Related Topics:

I have a 1990 ford f250 it keeps loseing oil pressure at idail and motor starts to nock but only in gear please help driving me crazy

1 Answer

Jason McDonald

5 Related Answers

Anonymous

Anonymous

mike loshbough

Anonymous

Ricky Peters

Add Your Answer

Attachments: Added items

Related Questions:

My oil gauge is going back and forth on my 1996 Ford F250, I have change the oil coolant sensor. When I drive a few miles the oil gauge goes crazy. Need help? I have change the oil sending unit also.

I have a 1995 mazda protege dx with a 1.5 litter that just started nocking yesterday I don't know what it is it has 173,245 miles on it and smoke when I get on it a little and at a idle the check oil...

99 silverado oil presure problem oil pump in front of engine

1990 ford f250 5 speed zf trans just had transmission rebuilt truck still jumps when i take off in second

I have a 7.3 1990 ford pu driving to work and it quit running cranks but won't start

Y TRUCK IS LOSING OIL PRESSURE BUT SOMETIMES ITS OK 4 ALITTLE WHILE IS IT MY OIL PUMP GOING OUT?

1995 ford f250 diesel won't start. I was driving down the road it just died. After i got it towed home i checked the fuel pressure nothing. So i changed the pump, still no start but its getting fuel. so i...

I have a 90 f250 when driving the oil pressure will drop and engine light comes on when i let off the gas it will go back to normal could this be an oil sending unit or bad oil pump

High pressure oil pump leak.

Truck under water

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My oil gauge is going back and forth on my 1996 Ford F250, I have change the oil coolant sensor. When I drive a few miles the oil gauge goes crazy. Need help? I have change the oil sending unit also.

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Related Topics:

I have a 1990 ford f250 it keeps loseing oil pressure at idail and motor starts to nock but only in gear please help driving me crazy

1 Answer

Jason McDonald

5 Related Answers

Anonymous

Anonymous

mike loshbough

Anonymous

Ricky Peters

Add Your Answer

Attachments: Added items

Related Questions:

My oil gauge is going back and forth on my 1996 Ford F250, I have change the oil coolant sensor. When I drive a few miles the oil gauge goes crazy. Need help? I have change the oil sending unit also.

I have a 1995 mazda protege dx with a 1.5 litter that just started nocking yesterday I don't know what it is it has 173,245 miles on it and smoke when I get on it a little and at a idle the check oil...

99 silverado oil presure problem oil pump in front of engine

1990 ford f250 5 speed zf trans just had transmission rebuilt truck still jumps when i take off in second

I have a 7.3 1990 ford pu driving to work and it quit running cranks but won't start

Y TRUCK IS LOSING OIL PRESSURE BUT SOMETIMES ITS OK 4 ALITTLE WHILE IS IT MY OIL PUMP GOING OUT?

1995 ford f250 diesel won't start. I was driving down the road it just died. After i got it towed home i checked the fuel pressure nothing. So i changed the pump, still no start but its getting fuel. so i...

I have a 90 f250 when driving the oil pressure will drop and engine light comes on when i let off the gas it will go back to normal could this be an oil sending unit or bad oil pump

High pressure oil pump leak.

Truck under water

Not finding what you are looking for?

Cars & Trucks

My oil gauge is going back and forth on my 1996 Ford F250, I have change the oil coolant sensor. When I drive a few miles the oil gauge goes crazy. Need help? I have change the oil sending unit also.

Ask a Question

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Manuals & User Guides

4B553E5.pdf. user-manual-2005 Focus...

CG3321enRHD072004-1.pdf....

96tbrog1e.pdf. user-manual-1996...