Question about 1985 Jeep CJ7

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1979 cj7 258 ci

I can get it to crank but it will not stay running i replaced selenoid, coil and ignition module im running out of ideas

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Check and make sure your not losing the 12 volts to the coil in the run position off the ignition switch.

Posted on Oct 03, 2008

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2 Answers

NO SPARK OUT OF THE COIL


Spark is created by the ignition module and crank shaft sensor remove distributor cap and use a logic probe red led shows positive voltage green shows negative voltage. the crank sensor has two wires with key on touch the leads and find the power side then have someone crank it over logic probe should flash a yellow color or toggle green red (2 bulb model) that shows a good sensor replace module. stays red then replace sensor.

Nov 07, 2013 | 1992 Honda Accord

1 Answer

Hi I have a 1980 trans am with a 305 hei. The car will only run for 30 seconds and then blows the ignition module I have replaced the distributor and the alternator and it keeps blowing modules I measured...


Sounds like a short to ground in the ignition system, maybe the coil ?
The computer grounds the module by way of the pickup coil in the dist.
If the ignition module in the dist is actually being fried, it could be getting high voltage from the coil.

Jul 14, 2012 | Cars & Trucks

2 Answers

1979 ford f350 has no spark. replaced coil, plugs, ignition module and still no spark. please help!


1979 ford 400 Drove inot shop did a cam shaft change and put all back together and no spark! put new coil , distributor, eletronic brian , wires ,rotor, cap, and check wire harness for brroken wires . still no spark? ANY IDEAS??

Jan 12, 2011 | 1979 Ford F 350

1 Answer

1979 chevy van not getting spark.was running fine day before.turns over fine,getting fuel.could it be the module


First thing is what condition are the distributor cap, ignition rotor, and spark plug wires in?

There is the possibility that the ignition coil located in the top of the distributor cap is faulty and first check to see if full battery voltage is even getting to the "Bat" or "Pos" (+) positive side of the ignition coil when the key is in the "Run" position. Then check the secondary resistance to the ignition coil.

The ignition module and the pick-up coil/stator located inside of the distributor is what generates the signal that the ECM (Engine Control Module) uses to time and fire the fuel injectors, as well as the signal to run the fuel pump and the dwell signal timing to fire the ignition coil. A faulty ignition module can cause any one of these systems to malfunction.

That does sound like a malfunction with the ignition module inside of the distributor, and you can remove the ignition module and have it tested for free at most auto part stores. If the ignition module does test out alright then the problem could still be in the pick-up coil/stator, (it can be tested using an ohm meter by dis-connecting the wire connector from the pick-up coil/stator and the ohm reading between the two wires from the pick-up coil/stator should be between 500 and 1500 ohm's, and both of the wires from the pick-up coil/stator should show an open loop or an infinite reading between each wire and ground) and if the pick-up coil/stator is found to be faulty then replace the entire distributor, or the distributor will have to be dis-assembled to install a new pick-up coil/stator.

If you do purchase a new ignition module be sure that it does come with a silicone grease or a die-electric compound because it is a heat sink and the ignition module will burn up without it.

To install the new ignition module first clean out the mounting surface inside of the distributor. Then completely coat the metal contact surface under the ignition module with a thick coat the silicone grease or die-electric compound and do not leave any of the metal contact surface of the ignition module un-coated with the silicone grease or die-electric compound, and be very careful not to over-tighten the ignition module or it will be damaged.

Let me know if you require any further assistance.


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Jul 29, 2010 | 1979 Chevrolet C/K 3500

1 Answer

Not starting. No spark. Crank angle sensor?


you my also have a selenoid problem,may sit on passenger side fenderwall.

Mar 13, 2010 | 1987 Nissan Pickup

1 Answer

Im not geting any spark.its turning but not cranking up


it the ignition module pack or the crank sensor or the cam sensor.i beleive the packs are under the ignition coils.you can take out the ignition module and run it up to autozone for a free test.

hope this helps
jm

Sep 16, 2009 | 1992 Buick LeSabre

3 Answers

Im not getting any spark in my 96 Corsica


Ignition module may be bad. It should be located under the coils, the coils usually plug into the ignition module. Also might be a bad crank or cam sensor

Sep 11, 2009 | 1996 Chevrolet Corsica

1 Answer

1994 honda accord won't start and has no spark


Check your coil and ignition module and ignition module fuse. this is a primary ignition problem for sure. check the primary resistance side of the coil it should be between 1 and 3 ohms. Also are you sure you put your cam gear at the exact mark it shoul be at and not 180 degrees off, otherwise car won't start.

May 30, 2009 | 1994 Honda Accord

2 Answers

Replaced entire ignition still no spark 88 305 ci


There are 3 possibilities. 1 the coil. 2 the ignition module. 3 the pick up coil. In my experience the ignition module is the most common cause. It is in the distributor held in with 2 screws. The coil and module can be tested at any parts house. Good Luck

May 26, 2009 | 1988 Chevrolet Suburban

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