Question about 2000 Mercedes-Benz S-Class

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93 sl 500 oil pressure sending unit wiring has a brown wire that broke of what does it do and where does it go it has 5 wires total solid blue --blue with red stripe---brown with blk stripe ----solid green--- larger white with pink stripe

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Smirlex

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Try this site for a free wiring diagram

Posted on Dec 08, 2012

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I don't know but I recommend getting a repair manual. Electrical schematics in those books. I swear by repair books.

Posted on Mar 05, 2010

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2 Answers

Would codes 33 and 54 cause a 93 oldsmobile cutlass supreme not to start


Code 54 is fuel pump circuit, Low voltage,will cause car not to start. Wiring open circuit/short circuit to ground, fuel pump relay, engine oil pressure warning lamp switch
Code 33 is MAP sensor,voltage high, low vacuum indicated.
Wiring short circuit to positive, hose blocked/leaking, MAP sensor, ECM

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Mar 13, 2016 | Oldsmobile Cars & Trucks

1 Answer

The oil warning lights staying on even when I have checked and topped up with oil


Look on top of the oil filter housing, I believe you should see 2 oil pressure sending units there wired separately. One is for low speed pressure and one is for high speed pressure. Often the wiring for these sending units will fray and break off inside the rubber boot. Check and repair if necessary. Also trace the wires back and look for chaffed insulation. Tape up any spots that you find. VW's have no tolerance for these kinds of things.

If the sending units are bad it is most likely the brown one which is the one for low speed. The second one may be white or black and will only activate over 2000 RPM. It will flash the light and sound a buzzer. To check the brown sending unit, let the engine run. The oil light should go out when you disconnect the wire from the sending unit. If it does then the sending unit is bad. If it doesn't then the problem is in the wiring or no pressure. To check the high speed unit, it's the opposite. Run the engine at 2500 RPM and disconnect the wire. The light should flash and the buzzer will sound.

To check the oil pressure with a mehanical guage it should be 29psi at 2000RPM. These are from a mid 90's 2 liter 16 valve but should put you in the ball park. Hope this helps.

Jul 17, 2011 | Volkswagen Camper Cars & Trucks

1 Answer

I have 96 vw jetta gl 5speed... just got a month ago. needs muffler & wipers dont work. appears fine otherwise UNTIL I go above 45 (2200 rpms) then the oil light flashes and there's a horrible...


That would be the high speed oil pressure sensor telling you there is a problem with your oil pressure.Your computer is reading insufficient oil pressure to maintain engine integrity above 2000RPM.
There are 2 oil sending units mounted on top of the oil filter housing. I don't have wiring for your year so I can't tell you for sure, but on my 1992 they are brown ( low pressure) and white (high pressure). Check the wiring carefully for cracks or bare spots in the insulation and fix any you find. Also make sure the wiring is good at the plug-ins. VW wiring won't tolerate cracks and often will break right where it meets the plug-in. Also if you have recently moved these wires you may have plugged them in wrong. I would most definately get the pressure checked with a mechanical oil pressure guage to be sure of the pressure. If it's good, 29 PSI at 2000 RPM then I would be looking at a bad sending unit. Hope this helps.

May 13, 2011 | 1996 Volkswagen Jetta

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

Where exactly is the Oil Pressure Sending Unit on a Jeep Wrangler 2000 6cyl so i can replace?


Oil Pressure Sensor The 3 wire, solid-state engine oil pressure sensor (sending unit) is located in an engine oil pressure gallery.

Aug 07, 2010 | 2002 Jeep Wrangler

1 Answer

1997 mercedes benz slk 230


Car Radio Battery Constant 12v+ Wire: Red/Green
Car Radio Accessory Switched 12v+ Wire: Pink/Yellow/Green
Car Radio Ground Wire: Brown
Car Radio Illumination Wire: N/A
Car Stereo Dimmer Wire: Gray/Blue
Car Stereo Antenna Trigger Wire: Blue/White
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: Under right footwell carpet.
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Blue
Left Front Speaker Negative Wire (-): Blue/Brown
Right Front Speaker Positive Wire (+): Yellow
Right Front Speaker Negative Wire (-): Yellow/Brown
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): N/A
Left Rear Speaker Negative Wire (-): N/A
Right Rear Speaker Positive Wire (+): N/A
Right Rear Speaker Negative Wire (-): N/A

pls rate

Dec 13, 2009 | 1997 Mercedes-Benz Mercedes Benz Sl Class

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

1 Answer

Audio wirig diagram


Car Radio Constant 12V+ Wire: Blue/Yellow
Car Radio Ignition Switched 12V+ Wire: Gray
Car Radio Ground Wire: Brown
Car Stereo Illumination Wire: Green
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: Black/Red
Car Stereo Amplifier Trigger Wire: N/A
Front Speakers Size: 5 1/4′
Front Speakers Location: Doors
Left Front Speaker Wire (+): Pink
Left Front Speaker Wire (-): Purple
Right Front Speaker Wire (+): Light Green
Right Front Speaker Wire (-): Blue
Rear Speakers Size: 6 1/2′
Rear Speakers Location: Rear Deck
Left Rear Speaker Wire (+): Black
Left Rear Speaker Wire (-): Yellow
Right Rear Speaker Wire (+): Red
Right Rear Speaker Wire (-): White

Aug 09, 2009 | 1993 Toyota Camry V6

3 Answers

I need the wiring diagram for the radio on a 1994 nissian quest gxe


Constant 12V+ Brown/White
Switched 12V+ Orange
Ground Black/Light Green
Illumination Pink/Black
Dimmer Pink
Front Speakers 5" x 7" Doors
Left Front (+) Gray/Blue
Left Front (-) Yellow/Blue
Right Front (+) Blue
Right Front (-) Yellow
Rear Speakers 5" x 7" Side Panels

Left Rear (+) Blue/White
Left Rear (-) Blue/White
Right Rear (+) Blue/Black
Right Rear (-) Red/Blue

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Apr 13, 2009 | 1994 Nissan Quest

1 Answer

1994 mercedes 500sl dash cluster problem


Hello, I don't have a picture but maybe this will help,
red/yellow-4
brown/white-1
brown-2
blk/yel-2
pink-11
green/white-13
green-12
brown/red-18
brown(small)-17
blue/brown-10
blue/green-7
blue/white-14
3 5 6 8 9 not used
I hope this will help.
CYA Gator241

Dec 08, 2008 | 1994 Mercedes-Benz Mercedes Benz Sl Class

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