Question about 1987 Mercedes-Benz Mercedes Benz 500 Class

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1984 Mercedes 500 SEL won't start - not getting spark out of distributor

We have replaced the distributor; the primary wire; crankshaft position sensor.

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

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Posted on Jan 02, 2017

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Anonymous

  • 84 Answers

SOURCE: crankshaft position sensor replaced and car shuts off

Hello, The crankshaft sensor is located at the left rear of the motor, behind the left cylinder head where the transmission bolts up. I believe that it has a 6mm allen head screw holding it down.
I hope this helps.
CYA, Gator241

Posted on Feb 06, 2009

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Anonymous

  • 216 Answers

SOURCE: 1984 mercedes 300 diesel has no electrical power when running

If your alternator is bad,replace your regulator,its mounted on the bad of the alternator,cost about 40 dollars,too many people replace good alternators.

Posted on Jun 23, 2009

Joe Metro

  • 53 Answers

SOURCE: 1984 Mercedes-Benz 500 SEL

In the driver's side trunk along the wheel well and behind the wheel well cover you will find the sunroof motor. There is a plastic knob that can be turned to close/open the roof manually. The socket tool is part of the original toolkit that came with the car, but otherwise, you can locate one that will fit. Don't use pliers as the plastic easily breaks. Meanwhile, have you looked at the fuse or toggled the switch hard to work? If the motor works, but doesn't move there is an adjutment on the motor's clutch that can be tightened. Hope this helps.

Posted on Feb 21, 2010

Jason Johnson

  • 1619 Answers

SOURCE: my 1992 mercedes 500 sel runs rough once started..

Lots of things to check. From 1993-1995 the US made car compaies use biodegradable insulation on it wire which ages with engine heat and then shorts so check that first. It has an upper harness for engine and lower for charging and starter. Then a real tune up is next coils, cap, rotor and wires. Once youve done that fuel system is next on the list fuel filter and fuel pressure.

Posted on May 01, 2010

Jason Johnson

  • 1619 Answers

SOURCE: my 92 mercedes 500 sel

Check ASR system. Wheel sensors would be a good start because thats what the system checks for speed difference at the wheels. It reduces power to keep you straight on the road.

Posted on Oct 21, 2010

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2 Answers

I've replaced everything to do with ignition spark on ky 1998 gmc pickup it has a 350 vortech engine why am I jot getting spark at the spark plugs ?


There is a spark control modal in the distributor most books do not tell you about it . if you have replaced everything else try that

Apr 19, 2015 | GMC Cars & Trucks

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My 91 Mercedes sel won't start. The battery is


check all wires to starter motor for bad earth.....make sure power reaching starter motor.....check starter motor isnt stuck

Feb 07, 2013 | Cars & Trucks

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2005 grand am wont start


see this steps and fix it. God bless you
When the engine cranks normally but won't start, you need to check ignition, fuel and compression. Ignition is easy enough to check with a spark tester or by positioning a plug wire near a good ground. No spark? The most likely causes would be a failed ignition module, distributor pickup or cranshaft position sensor CKP

A tool such as an Ignition System Simulator can speed the diagnosis by quickly telling you if the ignition module and coil are capable of producing a spark with a simulated timing input signal. If the simulated signal generates a spark, the problem is a bad distributor pickup or crankshaft position sensor. No spark would point to a bad module or coil. Measuring ignition coil primary and secondary resistance can rule out that component as the culprit.
Module problems as well as pickup problems are often caused by loose, broken or corroded wiring terminals and connectors. Older GM HEI ignition modules are notorious for this. If you are working on a distributorless ignition system with a Hall effect crankshaft position sensor, check the sensor's reference voltage (VRef) and ground. The sensor must have 5 volts or it will remain permanently off and not generate a crank signal (which should set a fault code). Measure VRef between the sensor power supply wire and ground (use the engine block for a ground, not the sensor ground circuit wire). Don't see 5 volts? Then check the sensor wiring harness for loose or corroded connectors. A poor ground connection will have the same effect on the sensor operation as a bad VRef supply. Measure the voltage drop between the sensor ground wire and the engine block. More than a 0.1 voltage drop indicates a bad ground connection. Check the sensor mounting and wiring harness.
If a Hall effect crank sensor has power and ground, the next thing to check would be its output. With nothing in the sensor window, the sensor should be "on" and read 5 volts (VRef). Measure the sensor D.C. output voltage between the sensor signal output wire and ground (use the engine block again, not the ground wire). When the engine is cranked, the sensor output should drop to zero every time the shutter blade, notch, magnetic button or gear tooth passes through the sensor. No change in voltage would indicate a bad sensor that needs to be replaced.
If the primary side of the ignition system seems to be producing a trigger signal for the coil but the voltage is not reaching the plugs, a visual inspection of the coil tower, distributor cap, rotor and plug wires should be made to identify any defects that might be preventing the spark from reaching its intended destination.


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Oct 16, 2012 | 2005 Pontiac Grand Am

1 Answer

My 2000 Dodge Grand Caravan will crank but won't start.


Hi, if an engine cranks but refuses to start, it lacks ignition, fuel or compression. When the engine cranks normally but won't start, you need to check ignition, fuel and compression. Ignition is easy enough to check with a spark tester or by positioning a plug wire near a good ground. No spark? The most likely causes would be a failed ignition module, distributor pickup or crankshaft position (CKP) sensor.

Jun 06, 2011 | 2000 Dodge Caravan

1 Answer

How do i install a distributor to a nissan pick up


It is necessary to place the No. 1 cylinder in the firing position to correctly install the distributor. To locate this position, the ignition timing marks on the crankshaft front pulley are used.

Remove the No. 1 cylinder spark plug. Turn the crankshaft until the piston in the No. 1 cylinder is moving up on the compression stroke. This can be determined by placing your thumb over the spark plug hole and feeling the air being forced out of the cylinder. Stop turning the crankshaft when the timing marks indicate TDC or 0.

Oil the distributor housing lightly where the distributor bears on the cylinder block.

Install the distributor so that the rotor, which is mounted on the shaft, points toward the No. 1 spark plug terminal tower position when the cap is installed. Of course you won't be able to see the direction in which the rotor is pointing if the cap is on the distributor. Lay the cap on the top of the distributor and make a mark on the side of the housing just below the No.1 spark plug terminal plug terminal. Make sure that the rotor points toward that mark when you install the distributor. On the VG30i, align the mark on the distributor shaft with the protruding mark on the housing.

When the distributor shaft has reached the bottom of the hole, move the rotor back and forth slightly until the driving lug on the end of the shaft enter the slots cut in the end of the oil pump shaft and the distributor assembly slides down into place.

When the distributor is correctly installed, the breaker points should be in such a position that they are just ready to break contact with each other or a lobe of the reluctor is aligned with the stator contact. This is accomplished by rotating the distributor body after it has been installed in the engine. Once again, line up the marks that you made before the distributor was removed from the engine. On the VG30i, the distributor rotor should be in the 11:25 o'clock position (between 11 and 12 o'clock).
  1. Install the distributor hold-down bolt.
  2. Install the spark plugs.
  3. Install the cap, primary wire, and vacuum line(s).
  4. Install the spark plug leads. Consult the marks made during removal to be sure that the proper lead goes to each plug. Install the high tension wire if it was removed.
  5. Start the engine. Check the timing and adjust it if necessary.


    Hope this helps, be sure to upvote if it does :)

May 04, 2011 | 1985 Nissan Pickup

1 Answer

1991 Mercedes 300 e will not start fuel pump ok distributor ok coil and module are ok also but no sparks alarm was on and blinking but went away after charging the battery and locking and unlocking the car...


If there is no spark, either no electrical at the primary coil or the coil is not working.
if you already measure primary/ secondary resistance to confirm it is OK. Here is to test it - making electric pulsed signal at the primary terminals to see it spark at the secondary terminal.
You want to confirm everything works from the coil, so you can find out what causing the coil is not working. Here are what to check the coil before a replacement::
1- Disconnect the Positive cable on the battery.
2- Hook a spark plug directly to the coil wire ( the one coming to the center of distribution cap)
3- Find a long double wire so you can connect from the terminals of the primary coil to the battery.
4- Connect each wire end to the terminal of the primary coil. It doesn't matter which polarity.
5- Connect 1 wire to the chasis ground.
6- Hold the other wire and quickly swipe it over the positive terminal of the battery. Reapeat it until are sure that you get spark or not.
7- You should see or hear a spark. If this is the case your coil is good. If itis not, your coil is bad and it need a replacement. Problem is solved.
4- If the coil is good, the problem would be from the Primary of the coil back to the ignition key: No electrical signal to turn on the coil.

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2 Answers

I have a 1991 chevy truck, I am getting no spark. I have changed the ECM, distributor and coil. still no results. I have no idea of what to do.


check to see if your truck has a crankshaft position sensor, its usually located behind the harmonic balancer or right near there, if the sensor went bad or if the wiring got messed up there will be no signal to the ecm telling the ecm when to send spark to the coil. the crankshaft position sensor is responsible for telling the computer when to fire the spark plugs based on rpm and timing. check the wires on the crankshaft position sensor, if they look fine, replace the sensor, hope this helps!

Jun 29, 2009 | 1991 Chevrolet Silverado 2500

1 Answer

I need to know cylinder configeration, and the two distributors spark plug wire configeration,what plug wire to set timing light on each distributor and which distributor to set first. Hope you can...


hello,your firing order 1-5-4-8-6-3-7-2,,,standing in front,left side of your engine is your cylinder 1 to 4,remove your valve cover then rotate your crankshaft,using 27mm socket,observe the movement of camshaft,and look for the timing mark in crankshaft,(ot) then you can install your high tension wire,begin on cylinder number 1,ty

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