Question about 1994 Chevrolet C3500

2 Answers

94 Chevy C3500 5.7L oil pressure sw on right side of block in the middle that has only 1 wire. It does not run the oil gauge as it still works when unplugged.

It is leaking oil and needs to be replaced, only no one can find a part # for it.

Posted by on

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Greenhorn:

    A rookie expert who has answered 20 questions on their first day.

    Cheetah:

    An expert who has answered 20 or more questions within one hour.

  • Expert
  • 126 Answers

I think the switch you are describing is the knock sensor on those trucks. It screws into the block right below the exhaust manifold and only has one wire that is in a round housing plug

Posted on Apr 09, 2015

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Master:

    An expert who has achieved Level 3.

  • Chevrolet Master
  • 442 Answers

Take the sensor to oriely's ,or autozone and have them match the sensor those trucks have two oil sensors or switches as most people call them the one behind the intake at the back of the engine is your oil gauge the other is the computer switch for other purposes like for the fuel pump or etc
Purpose: As a back-up system to the fuel pump relay, the fuel pump is also turned ON by the oil pressure switch. Operation: When the engine oil pressure reaches about 28 kPa (4 psi), through cranking the oil pressure switch will close to complete the circuit to the fuel pump.


94 Chevy C3500 5.7L oil pressure sw on right side  - 25636349-twokmmoxmconkg43teug4wwl-5-0.jpg The one you need that is behind the exhaust is a oil pressure sensor .
the one up behind intake is a oil pressure switch

Posted on Apr 09, 2015

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
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.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Oil pressure drops to zero on avalanche


If there truly was no oil pressure it would make a horrendous rattle sound from not only the rods but especially the hydraulic valve lifters. It sounds like probably the pressure sensor or the wiring, or both are not reading correctly. The older Chevy V8's had the pressure sensor on the side of the block, under the exhaust manifold where it would just cook it and make it leak and not work right. I always kept a direct reading pressure gauge with hose and adapters in my tool box when I felt I couldn't trust the onboard gauge. Many times it proved the gauges and idiot lights wrong.

Dec 07, 2013 | Cars & Trucks

Tip

Troubleshooting oil leaks on Nissan Altima


    Your Altima uses a variety of different oils to lubricate various components. Normally, these oils won't leak. But when you do find a leak, you will almost always need to have extensive work done on your Altima to correct the problem. However, before you can replace anything, you need to know what kind of oil it is
    Check for brown or black oil leaking on the ground or on the side of the engine. This is engine oil. It lubricates critical engine components. A leak means that an engine seal has failed and needs to be replaced

    Check for red oil. Red oil is trans fluid. On your Altima, it most likely means that you have a rear main seal on the transmission that has failed. However, any seal on the transmission is possible. Transmission leaks need to be fixed immediately. A transmission can fail catastrophically in 20 minutes of driving if there is insufficient oil in the transmission

    Check for amber or brown oil leaking from your trans. This is transmission gear oil found only on the manual version of the Nissan Altima.

on Mar 03, 2011 | Nissan Altima Cars & Trucks

1 Answer

How does someone install manual oil pressure gauge on 2006 chevy 2500 with 6.0L Vortex


where the oil pressure sender unit is on the block install a "t" fitting . Place the electrical unit in one side and a brass fitting in the other . Run the copper line from the gauge through the firewall to the "T" piece and connect up (if you are using a plastic tube the do not waste your time as the plastic fails -cracks ,slips. or melts causing engine failure) Position the gauge and connect the copper line to the gauge . run engine and check for oil leaks.

Nov 30, 2013 | 2006 Chevrolet Silverado 2500HD 2WD

1 Answer

Engine runs out of oil in less than one week, and engine raggs.


what do you mean by engine raggs? Is the engine using oil are is it leaking? if the engine is leaking then you need to find out where it is leaking oil from then replace the seal. if the engine is burring oil then you need to replace the piston rings. you and go to your local auto parts store and get some oil stop leak is the easiest fix.

Oct 22, 2013 | 2004 Nissan Sentra

1 Answer

OIL LEAKING INTO THE SPARK PLUGS ON 2005 MALIBU CLASSIC


ENGINE OIL ISSUES/ OIL LEAK


The oil is getting leaked from its running area. The oil pump has to be pressure tested by pressure test to confirm the leak and area of leak: -----

For step by step troubleshooting check the help links mentioned below: -----


Click the link below: -----


Water in engine oil?

http://schematicsdiagram.blogspot.com/2011/12/water-in-engine-oil.html

-----------

Oil on spark plugs and car misfires?

http://technoanswers.blogspot.in/2012/02/oil-on-spark-plugs-and-car-misfires.html

---------

High Oil Level on Dipstick

http://whatisbyme.blogspot.in/2012/06/high-oil-level-on-dipstick.html

---------

Oil pouring out from left front of engine?

http://schematicsdiagram.blogspot.com/2012/01/oil-pouring-out-from-left-front-of.html

----------------

Common Causes of Car Oil Leaks?

http://schematicsdiagram.blogspot.com/2011/12/common-causes-of-car-oil-leaks.html

-------------

Troubleshoot Car Oil leak?

http://schematicsdiagram.blogspot.com/2011/12/troubleshoot-car-oil-leak.html

---------------

Kia Sportage leaking oil from oil pan?
http://howtobyme.blogspot.com/2011/11/kia-sportage-leaking-oil-from-oil-pan.html

----------

Toyota Corolla leaking oil from timing cover?

http://technoanswers.blogspot.in/2012/02/toyota-corolla-leaking-oil-from-timing.html
-------------

Overfilling oil in engine?

http://whatisbyme.blogspot.in/2012/06/overfilling-oil-in-engine.html

-------------

2000 Dodge Ram 3500 Cummins Diesel: Oil Leak issues?

http://schematicsdiagram.blogspot.in/2012/06/2000-dodge-ram-3500-cummins-diesel-oil.html

--------------

How to Replace an Oil Pan Gasket?
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-oil-pan-gasket.html
------------
HOW TO REPLACE AN OIL PUMP
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-oil-pump.html
--------------
HOW TO CHANGE ENGINE OIL AND FILTER
http://schematicsdiagram.blogspot.com/2011/07/how-to-change-engine-oil-and-filter.html
----------------
HOW TO REPLACE AN OIL PRESSURE SWITCH (SENSOR)
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-oil-pressure-switch.html
-------------
How to Check Differential Oil Leaks and Replace Oil
http://schematicsdiagram.blogspot.com/2011/07/how-to-check-differential-oil-leaks-and.html
------------
HOW TO PERFORM A BASIC ENGINE TUNE UP-OIL CHANGE
http://schematicsdiagram.blogspot.com/2011/08/how-to-perform-basic-engine-tune-up-oil.html

------------

HOW TO RESET OIL CHANGE INDICATOR?

http://whoisbyme.blogspot.in/2012/07/how-to-reset-oil-change-indicator.html

-------------


These details will help.

Thanks.

Dec 05, 2012 | Chevrolet Cars & Trucks

1 Answer

How do I change the oil pump on a 2000 Camry, 2.2L??


For oil pump,oil pump pressure,oil warning light,oil low,oil ewplacing and other car engine oil problems,the help links are provided below.Click the link to go through the procedure :-----Oil light came on and the car died?http://schematicsdiagram.blogspot.in/2012/03/oil-light-came-on-and-car-died.html--------How to replace Oil filler cap or breather cap?http://repairhelpcenter.blogspot.in/2012/02/how-to-replace-oil-filler-cap-or.html---------Oil pouring out from left front of engine?http://schematicsdiagram.blogspot.com/2012/01/oil-pouring-out-from-left-front-of.html------Common Causes of Car Oil Leaks?http://schematicsdiagram.blogspot.com/2011/12/common-causes-of-car-oil-leaks.html--------Troubleshoot Car Oil leak?http://schematicsdiagram.blogspot.com/2011/12/troubleshoot-car-oil-leak.html--------Oil change details?http://repairhelpcenter.blogspot.com/2012/01/toyota-highlander-sport-oil-change.html---------Low oil pressure light?
http://howtobyme.blogspot.com/2011/11/low-oil-pressure-light-on-dodge-magnum.html
----------
leaking oil from oil pan?
http://howtobyme.blogspot.com/2011/11/kia-sportage-leaking-oil-from-oil-pan.html ----------
Car Turns OFF due to low oil pressure warning light?

http://schematicsdiagram.blogspot.com/2011/12/car-turns-off-due-to-low-oil-pressure.html

------------
leaking oil from timing cover?

http://technoanswers.blogspot.in/2012/02/toyota-corolla-leaking-oil-from-timing.html

----------
For more oil and oil pump details check out the direct links below: ---

How to Replace Oil Pan on car?
http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-oil-pan-on-audi-a4-and.html
--------
How to Replace an Oil Pan Gasket?
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-oil-pan-gasket.html
-----------
HOW TO REPLACE AN OIL PUMP
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-oil-pump.html
----------
HOW TO CHANGE ENGINE OIL AND FILTER
http://schematicsdiagram.blogspot.com/2011/07/how-to-change-engine-oil-and-filter.html
----------
HOW TO REPLACE AN OIL PRESSURE SWITCH (SENSOR)
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-oil-pressure-switch.html
-----------
How to Check Differential Oil Leaks and Replace Oil
http://schematicsdiagram.blogspot.com/2011/07/how-to-check-differential-oil-leaks-and.html
----------
HOW TO PERFORM A BASIC ENGINE TUNE UP-OIL CHANGE
http://schematicsdiagram.blogspot.com/2011/08/how-to-perform-basic-engine-tune-up-oil.html

-------


Oil pan Gasket on car?
http://howtobyme.blogspot.com/2011/11/oil-pan-gasket-on-1998-toyota-tercel.html

---------

Oil pressure for car?

http://schematicsdiagram.blogspot.com/2011/12/oil-pressure-for-2001-gmc-jimmy-v6.html

----------
How to replace Oil Pan on car?

http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-oil-pan-on-2008-honda.html

---------
How to replace Oil Pressure Sensor on car?

http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-oil-pressure-sensor-on.html

-----------
How to replace Oil Pump on car?

http://howtobyme.blogspot.com/2011/12/how-to-replace-oil-pump-on-2008-honda.html

----------
Car oil leak?

http://schematicsdiagram.blogspot.com/2011/12/car-oil-leak.html

----------
Car oil leaks from valve cover gasket?

http://schematicsdiagram.blogspot.com/2011/12/car-oil-leaks-from-valve-cover-gasket.html

----------
Oil light blinks on dashboard?

http://schematicsdiagram.blogspot.com/2011/12/oil-light-blinks-on-dashboard.html

-----------
Oil pressure issues on car?


http://repairhelpcenter.blogspot.com/2012/01/oil-pressure-issuers-on-toyota-tundra.html

-----------
Oil leaks from air filter on ford?

http://technoanswers.blogspot.com/2012/01/oil-leaks-from-air-filter-on-ford.html

---------
Wire running from oil pan to alternator?

http://technoanswers.blogspot.in/2012/02/wire-running-from-oil-pan-to-alternator.html

--------------
Why car leaks oil from oil filter?

http://schematicsdiagram.blogspot.in/2012/02/toyota-camry-leaks-oil-from-oil-filter.html

------------
Why engine is consuming lots of oil?

http://schematicsdiagram.blogspot.in/2012/02/2008-scion-xb-24l-engine-is-consuming.html

-----------
Maint REQD message on car dash?

http://schematicsdiagram.blogspot.in/2012/02/maint-reqd-message-on-2008-lexus-rx350.html

------
Remove Sump oil pan?

http://repairhelpcenter.blogspot.in/2012/03/remove-volkswagen-sump-oil-pan.html

--------
Sump not coming OFF?

http://repairhelpcenter.blogspot.in/2012/03/sump-not-coming-off.html

-----------
How to remove the sump on car?http://repairhelpcenter.blogspot.in/2012/03/how-to-remove-sump-on-vw-beetle.html----------Car oil sump removal diagram?

http://repairhelpcenter.blogspot.in/2012/03/volkswagen-beetle-oil-sump-removal.html

---------

This will help.

Thanks.

Feb 05, 2012 | 2000 Toyota Camry

1 Answer

2003 chevy avalanche, oil pressure gauge is all the way up to highlevel. what to do?


Locate oil pressure sending switch on side of engine block(small black switch with one wire plugged onto it )kinda looks like a big spark plug.Unplug clean contact and plug back in.If gauge still not working need to replace switch.

Feb 16, 2011 | Chevrolet Avalanche Cars & Trucks

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

I was told there are two oil pans on Mazda Tribute 2001 (upper & lower) 4 cylinder manual. I have an oil leak do I replace both?


There are two gaskets, one is between the lower pan and the upper pan, and the second is between the upper pan and the engine. You only need to replace the gasket that leaks. If both are leaking, replace them both. To find out where the leaks are, raise the car, get underneath, and look closely all around the oil pans to see where the oil is coming from. Use a flashlight if necessary. You should be able to trace any leaking oil upward to its source.

The oil pan gaskets are not necessarily the only sources of oil leaks. Check to see if any oil is coming from behind the timing cover, and look for oil coming from the valve cover gasket.

Mar 21, 2010 | Mazda Tribute Cars & Trucks

Not finding what you are looking for?
1994 Chevrolet C3500 Logo

323 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

74896 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7688 Answers

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

Answer questions

Manuals & User Guides

Loading...