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I have a 1970 pontiac lemans with mallory unilite ignition system. Replaced the unilite module and still not gettin any fire to the spark plugs, did the credit card test and am gettin voltage into and out of the coil and to the module. I CANT FIGURE OUT WHAT IS WRONG SOME ONE HELP!

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  • 373 Answers

What size engine? What is the credit card trick, never heard of that one before. Does this car have a knock sensor? Crank sensor?

Posted on Jan 17, 2013

  • casey cozart Jan 17, 2013

    Its a pontiac 350cid, its a 1970 so there are no sensors. The credit card is used to break the circuit between the points so that you can test if the coil is producing voltage to the points which it is

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Posted on Jan 02, 2017

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SOURCE: No Spark from coil

I have problem with coil not working. In the morning,car with not start, but if I run a wire from battery to (+) to coil (+) will start. the rest of day no problem,car will start. but next morning same problem no spark from coil. c

Posted on Jun 14, 2009

RJones1125
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SOURCE: 91 mazda 626dx 2.2liter shuts off while driving

sounds like the fuel pump relay

Posted on Feb 23, 2009

daves944
  • 1050 Answers

SOURCE: 1991 honda accord "no spark"

There is a relay mounted way up under the dash on the driver side. It is about 1"x1"x2" and it says Mitsuba on it. This is the PGMFI relay, sometimes called the main relay or fuel injection relay. It is very likely the problem. You can buy another one, or there was a bulletin on how to repair it. You need to take it out, pop the cover off, and resolder the cracked solder joints on the pc board that the relays are mounted on. Really not that hard if you have a little soldering experience. If not, just buy another one, about 50 bucks.cb28323.jpg

Posted on Mar 26, 2009

Molson02536
  • 3854 Answers

SOURCE: 1991 4.3L GMC Jimmy S-15 will not start. Turns

You need 3 things.
Compression
Good hot blue spark to all plugs.
Good gasoline and proper fuel pressure. 13-13.5 lbs on your TBI
If you have all 3 then move on to injector pulse to both injectors.

Keep me posted and recheck your spark plug wire to make sure they are not crossed. firing order 1-2-3-4-5-6 cylinder # passenger side 1-3-5 front to back. cylinder # drivers side 2-4-6 front to back
distributor #1 is located at the 7 o"clock and rotates clock wise so next distributor post on the right working clock wise is #2. Good luck and hope this helps.

Posted on Jan 05, 2010

  • 110 Answers

SOURCE: i have a 99 grand am SE 2.4 4 cylinder and my

A misfire doesn't always have to be ignition... it's just the most common cause. Faulty or plugged injector, low compression. You need to check fuel pressure and test the fuel injector flow. Then check compression. If you don't have tools for these tests, take it to someone who does. Testing is much cheaper than throwing parts at the problem.

Posted on Feb 25, 2010

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