Question about 1995 Dodge Ram

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Horn doesn't work ,how do I test it to find the problem

Every thing electrical works on the truck except horn and oil pressure
gauge. How do I test it to find out if it is the horn relay or what? Fuse is
ok horn just will not sound. Vehicle is 1995 Dodge Ram 1500 Truck
with 5.2 Litre V8.

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An easy way is to switch relay with one that you know is good. aslong as the numbers are the same it can be switched. most all the relays in your dodge ram are the same.

Posted on Aug 11, 2010

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1 Answer

Low oil pressure


There's a couple of things you can try. You could have a bad oil pressure sender or a bad gauge. Without spending a lot you could replace the sender unit. If the gauge is defective, it is more expensive and the new sender was a waste of money.

You could have someone put on a pressure test gauge which would be threaded into the hole from removing the oil sender. This will tell you if the oil gauge and old sensor are accurate. If the readings from the mechanics add-on gauge are still low, then you have an internal engine problem.

A mechanic will cost you to hook up a test gauge, and you still may have to buy a new sender. Probably the best thing is to do is install a new sender yourself and if it works you are done; if it does not help either go to a mechanic or replace the gauge.

An internal engine problem could be an oil pump, or bearings.

Apr 21, 2014 | 2009 Lincoln MKZ

1 Answer

Temperature pressure gauge and oil pressure gauge not working


simplify. you just were in the engine compartment... did something get disturbed, unplugged, look at the temp sender and the oil sender, they have been the most likely causes of concerns of this type since electric indicators replaced gauges years ago. does your system have a tripminder or indicator for changing the oil? does it get a reset during the service? if yours has that there may be a mode that its in...but not fully reset.. then theres a question about..does your body control ecu have a self test mode? or your powertrain control? these can be read for codes for free as a preliminary check at a local parts store.

Apr 02, 2014 | 1997 Isuzu Rodeo

3 Answers

How to you check to see if the oil pressure guage is bad or if there's a pressure problem itself?


Connect test leads to the guage and apply 12 volts, if the guage activates upward this works, if it's the oil preaaure in regards to the oil pump, you need to hook up a oil pressure guage.

Mar 31, 2011 | 1991 Ford F150

1 Answer

Where is the oil pressure switch/sendor located?


Oil pressure can be checked at the sending unit passage with an externally mounted mechanical oil pressure gauge. To get accurate results from the test, make sure you follow the manufacturer's recommendations and compare your findings to specifications.
Testing the Oil Pressure Gauge
  • Test the gauge by grounding the wire that leads to the sending unit on the block.
  • When the wire is disconnected from the sending unit with the key switch on, the needle on the oil pressure gauge should be either all the way high or all the way low. Grounding the wire should make the needle move to the opposite side of the gauge from where it was before the wire was grounded. If the vehicle is equipped with an oil pressure light, touching the wire to ground and then removing the wire from ground should turn the light on and off.
  • If either happens, the gauge and wiring are good and the sending unit is at fault.
Testing Oil Pressure
Pressure can be tested by temporarily installing an oil pressure gauge in place of the sending unit. Before testing, look up the oil pressure specifications for your vehicle in the appropriate service manual.
  • Bring the engine up to operating temperature.
  • Now shut the engine off.
  • Locate the oil pressure sending unit; usually it is on the lower side of the engine block.
  • Disconnect the wire from the sending unit and use an open ended wrench to remove the sender. Using pliers can damage the unit.
f43-19.jpg An oil pressure sending unit is removed with a special socket. Courtesy of Chrysler Corporation.
  • Tighten the oil pressure test gauge into the hole in the block where the sender was removed.
f11-15_3184.gif Measuring oil pressure. Reprinted with permission.
  • Check the engine's oil level and fill, if required.
WARNING Be extremely careful when working near a running engine. Always wear safety goggles or glasses with side shields when working around moving machinery and be sure that your clothing is not loose.
  • Now turn the engine on and check the oil pressure on the gauge.
    • Watch as the engine warms to note any excessive drops due to temperature.
    • Make sure the engine speed is set to specifications for testing pressure.
    • If necessary, us a tachometer and adjust the engine idle speed.
  • Record the measured oil pressure, then turn off the engine.
  • Compare the test results with the manufacturer's specifications.
    • If the oil pressure is within specifications, this shows that the oil pressure sending unit may not be working correctly.
    • In many cases, replacing the oil sending unit will correct the problem.
  • After the test is complete, reinstall the oil pressure sending unit, start the engine, and confirm there are no leaks.

Nov 20, 2010 | 2002 Pontiac Bonneville

1 Answer

Why won't the oil and temperature gauge work on


you should switch the temperature sensor and oil pressure sensor you had on your first engine,because your new engine must come with the light indicator dashboard so the sensor of your new engine are not compatible with your gauges....lipak!...

May 05, 2010 | 1988 Ford Ranger

3 Answers

What would cause a drop in oil pressure without any visible leak


the pressure bypass valve in the oil pump leaking by and not closing completely to make the pump build full pressure,or the pump is working and the sending unit is giving you a false reading,then you should have a mechanic put on a gauge to see actual pressure of the pump,don't wait cause if pressure is actually that low you will sustain engine damage soon

Apr 02, 2010 | 1998 Chevrolet S-10 Pickup

2 Answers

Oil pressure gauge not working ,need to know location of same.


Oil Pressure Sensor Testing
  1. Check the oil level and correct as necessary. Turn the ignition switch on, but do not start the engine.
  2. Disconnect the sensor lead at the sensor. The gauge should read full scale.
  3. Ground the connector. The gauge should read at the bottom of the scale.
  4. If the gauge functions properly, replace the sensor.

4.8L, 5.3L & 6.0L Engines
  1. If necessary, remove the engine sight shield.
  2. Disconnect the oil pressure sensor electrical connector.
  3. Using J 41712 or equivalent, remove the oil pressure sensor.
95508f3.gif
Using J 41712 or equivalent, remove the oil pressure sensor.

To install:
  1. Apply sealant to the threads of the oil pressure sensor.
  2. Using J 41712 or equivalent, install the oil pressure sensor.
    • Tighten the oil pressure sensor to 26 ft. lbs. (35 Nm).
  3. Connect the oil pressure sensor electrical connector.
  4. If necessary, install the engine sight shield.

Dec 07, 2009 | 2004 Chevrolet Avalanche

2 Answers

Oil pressure loss


the 1st thing u do is have the oil pressure tested with a test mechanical gauge by a shop, most times it is just the oil pressure sending unit is defective, but never assume that is the problem, low oil pressure will distroy a $5000.00 engine very quickly, u can just try a new sending unit, but highly recommend a pressure test with a mechanical gauge before you run the engine anymore.

Dec 05, 2009 | 2000 Jeep Cherokee

1 Answer

Oil light blinks on and off could pressure switch be bad if so where is it located on a 2000 ford windstar 3.0


Oil Pressure Switch Operation:
00134_oil_pressure_switch_gauge.jpgInformation relay unit for the indicator light or gauge on instrument panel. It contains a diaphragm that responds to changes in oil pressure. When the oil level is over a pre-set limit, the diaphragm opens the switch, turning off the light. When level is below the pre-set limit, the dash light comes on. In later model cars, if the oil pressure drops, the switch turns off the fuel pump, to stop the engine and limit damage to internal parts. Oil pressure switches can be grouped into two categories, units for electrical gauges and for mechanical gauges.

Oil pressure can be checked at the sending unit passage with an externally mounted mechanical oil pressure gauge. To get accurate results from the test, make sure you follow the manufacturer's recommendations and compare your findings to specifications.
Testing the Oil Pressure Gauge
  • Test the gauge by grounding the wire that leads to the sending unit on the block.
  • When the wire is disconnected from the sending unit with the key switch on, the needle on the oil pressure gauge should be either all the way high or all the way low. Grounding the wire should make the needle move to the opposite side of the gauge from where it was before the wire was grounded. If the vehicle is equipped with an oil pressure light, touching the wire to ground and then removing the wire from ground should turn the light on and off.
  • If either happens, the gauge and wiring are good and the sending unit is at fault.
Testing Oil Pressure
Pressure can be tested by temporarily installing an oil pressure gauge in place of the sending unit. Before testing, look up the oil pressure specifications for your vehicle in the appropriate service manual.
  • Bring the engine up to operating temperature.
  • Now shut the engine off.
  • Locate the oil pressure sending unit; usually it is on the lower side of the engine block.
  • Disconnect the wire from the sending unit and use an open ended wrench to remove the sender. Using pliers can damage the unit.
f43-19.jpg An oil pressure sending unit is removed with a special socket. Courtesy of Chrysler Corporation.
  • Tighten the oil pressure test gauge into the hole in the block where the sender was removed.
f11-15_3184.gif Measuring oil pressure. Reprinted with permission.
  • Check the engine's oil level and fill, if required.
WARNING Be extremely careful when working near a running engine. Always wear safety goggles or glasses with side shields when working around moving machinery and be sure that your clothing is not loose.
  • Now turn the engine on and check the oil pressure on the gauge.
    • Watch as the engine warms to note any excessive drops due to temperature.
    • Make sure the engine speed is set to specifications for testing pressure.
    • If necessary, us a tachometer and adjust the engine idle speed.
  • Record the measured oil pressure, then turn off the engine.
  • Compare the test results with the manufacturer's specifications.
    • If the oil pressure is within specifications, this shows that the oil pressure sending unit may not be working correctly.
    • In many cases, replacing the oil sending unit will correct the problem.
  • After the test is complete, reinstall the oil pressure sending unit, start the engine, and confirm there are no leaks.




Nov 17, 2009 | 2000 Ford Windstar

2 Answers

Oil Pressure going up and down during acceleration and decel.


Check your oil level in the engine. Oil pressure will read this way when the oil level is getting low...

May 27, 2009 | 1987 Porsche 944

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