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1985 dodge 318 quit will not start- 12 volt both sides of coil- 12 volt to ECU ground negitive side of coil spark from coil wire to ground cap,rotor and resitor hav been replaced no spark at sparkplugs HELP

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Posted on Jan 02, 2017

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SOURCE: have 6 volts at coil

something wrong with theare measurements

Posted on Aug 13, 2008

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SOURCE: 86 dodge 250 v8-318 no fire at spark plug, will not start

did you change the main coil and coil wire?if so then check the ing resistor and then the computor box

Posted on Mar 20, 2009

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SOURCE: 97 dodge ram no spark

then i would replace whats called the hall effect sensor its that black plastic plate you see when you take dist cap off. just pull rotor and lift up the sensor.dist cap is what holds it on.also under the sensor will be a stamped sheet metal piece that looks like the top of a castle wall. make sure its not loose on the shaft.if it is then new dist will be needed

Posted on May 09, 2010

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SOURCE: 1999 dodge ram 1500 318 engine no spark no signal

Check the ASD relay in the fuse box. Swap it with the starting relay. If the engine fails to roll over. Thats your problem. If not, check and see if your fuel injector connectors have voltage to them if not its a bad PCM. Hope this helps.

Posted on Jun 09, 2010

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SOURCE: on the coil how many volt is a coil should have

A standard ignition coil normally generate about 15,000 - 25,000 volt depending the requirement to spark the spark plugs. The input volt should be 12 volt but the amperage should run about 400Va.
So now what is the question?

Posted on Nov 19, 2010

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What is the hot side of the coil so I can hot wire to see if I can get spark also to check to see if coil still is goood

The wire that goes to the distributor is the ground side of the coil. The other side is the positive side. Be careful if you plan to connect 12 volts to this terminal on the car, as most cars have a ballast resistor between the 12 volts and the positive of the coil. If you connect 12 volts directly to the coil you may burn out the coil. You are better to use a multimeter to check the coil as that will not damage it.

May 23, 2016 | Cars & Trucks

1 Answer


usually those coils are pulsed at the ground wire end of the coil. So you could have 12 volts in. The question you have 12v out the ground end?
If so then the coil pulseing unit may be bad.That signal,should come from the distributor....or maybe from the ECU Processor.

Jun 26, 2011 | 1992 Mercury Capri

1 Answer

On the coil how many volt is a coil should have on poistiveside whenswitch is on it have 6.2volt when swith on 12 volt when the ecu is disconnect it have 12 it will not start an run it 318

A standard ignition coil normally generate about 15,000 - 25,000 volt depending the requirement to spark the spark plugs. The input volt should be 12 volt but the amperage should run about 400Va.
So now what is the question?

Nov 19, 2010 | 1983 Dodge Pickup

2 Answers

Will Not Start

Check the distributor for cracks and check the rotor inside the distributor, it may be worn out.

Sep 10, 2009 | 1985 Dodge Pickup 4WD

2 Answers

Getting 12V on the ground wire to the coil. Any

the coil has two wires. one side is hot 12 volts the other side is the side that is pulsed to ground to create the magnetic field to induce high voltage.. with the key on not running you should see voltage on both wires... disconnect the plug from coil and recheck you will have power only on one wire that is the hot wire.. hook back the plug now take your test light ground clip and clip it to the positive terminal on battery. then back probe the wire to be pulsed.. have some one crank jeep and you look at test light.. looking for kinda dimm flash... if so that tell you you should have spark if not the bad coil.. if you don't see flash then probable bad pick up/... let me know

Sep 01, 2009 | 1985 Jeep CJ7

1 Answer

No spark between the distributor and coil

You need a voltmeter or test light to find 12 volts on one side terminal of the coil--the other side terminal goes to the distributor. If both sides have 12 volts, then the points may be dirty. If no 12 volts on the coil, trace that wire back to a resistor block on the firewall--check both ends for 12 volts. If still no 12 volts, check the ignition switch. Have you checked for a blown fuse?
Generators are usually nearly totally enclosed and long with several terminals sticking out. Alternators are shorter and wider with lots of ventilation slots and several terminals on the back. They also have a prominent fan behind a smaller pulley. You might see if you can find a Haynes service manual for this car if you are on your own.

Jul 18, 2009 | Fiat 124 Cars & Trucks

1 Answer

My nissan

If you have a 12 volt test light put the point on the positive lead to
the coil and the ground lead to a good ground ( Negitive side of battery ). Then turn the key on. If the test light comes on then you have power to the coil. With power to the coil confirmed have someone crank the engine and put the test light on the negitive side of the coil. The light should flash at a rapid steady rate. If not then your pickup in the distributor may be bad. If no power to coil with key on or when cranking you may have a bad ignition switch.
Another way to test for spark is to remove the coil wire from the dist cap and hold the end close to a ground ( 1/4 inch away) and
have some one crank the engine. If you get a good spark but no
spark to the spark plugs you may have a cracked dist cap or a bad rotor. If no spark at coil wire use a wire in place of the coil wire to check for spark. You may have a bad coil wire. Good luck. Neil W.

Dec 24, 2008 | 1983 Nissan Pulsar

1 Answer

GM 2.8 Liter Engine ECM/Coil will produce spark

does a 85 have a ECU unit ??? sounds like it could be the switching transistor thats either under the coil or inside the distributor should look like a black plastic casing with 3/4 wires running to it then to the coil look at this first as often motor runs ,stop for a quickie somewhere and jump back in and engine will not fire up ,classic symptons

Dec 20, 2008 | 1985 Jeep Cherokee

1 Answer

I have a 1987 dodge ramcharger

ECU is on left side behind battery mounted on fender your distributor is probably your problem because the pickup coil is failing

Dec 19, 2008 | 1985 Dodge Ramcharger

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