Question about 1994 Pontiac Trans Sport

1 Answer

No spark from new coil pack

Been back firing from time to time. Had no spark from coil pack itself. Replaced coil pack and still no spark. Anything else to look at? Transport 94 3.1

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  • 3 more comments 
  • Bad Apple May 16, 2009

    Will try after locating it

  • Bad Apple May 17, 2009

    I'll try that

  • choklitma25 May 25, 2009

    my coil pack on a 99 olds alero is not firing ive changed the module the coil pack the crank sensor and the camshaft sensor and still nothing

  • Anonymous Mar 27, 2014

    No spak on coil

  • Anonymous Mar 29, 2014

    it doesn't throw spark on the coil pack

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  • Master
  • 3,113 Answers

Crank sensor!

Posted on May 16, 2009

  • honeymokey
    honeymokey May 16, 2009

    The 94 transport 3.1 has a distributor and no crank sensor. You threw me off when you said coil pack. You might try a distributor module under rotor inside the distributor.

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1 Answer

I have a 2005 Grand caravan 3.3 with 236.000 miles it came up with a code P2308 ignition coil C secondary circuit ? No spark to cylinder 6 & 3 ?


No cylinders fire at same time. 6 & 3 must be from same coil-ignition coil C-that is the one with the problem. And the secondary circuit- that is the spark firing portion of the coil. Coils have a primary winding circuit and a secondary wire winding circuit. The secondary comes out of coil as the tower, or the spark plug wire tower -the business end of the coil leading to the plug.

You could have a bad new coil (happens occasionally) or the connection to that coil may be the problem-the connection where the coil snaps onto the coil pack assembly. Try swapping that coil (coil C) with another one there and see if problem follows the coil. See? Keep your plug wires the same, just swap coils with another and see if the new position for suspect coil causes other cylinders to misfire. If a different coil in that "C" position causes same code, then it is not the coil itself, but probably the base assembly that the coil connects to.

These ignition systems use what is called a waste spark, or exhaust waste spark system. The coil will send spark to 6 & 3 simultaneously, but since one is always on the exhaust stroke while the other is on the compression (firing) stroke, the exhaust spark is very weak, and all the energy from coil is directed to the compression stroke cylinder. It sounds crazy but it works great.

Since you say it runs bad just as before, that indicates the coil is not the problem, but something wrong with the base of the coil pack . This is where the wiring is directed to the coils.

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Buick General Motor 3800 V6 Engine Firing Order DIS IDI ignition timing 3.8 Buick Engine Coil Pack Firing Order Spark Plug Wire Location Which way do the spark plug wires go on & what cylinder is what?
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For the Buick V6 231 3.8 liter turbocharged engine:
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Answers!
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1 Answer

No fire in coil pack.


Was the timing chain damaged ?
Did you have spark from the coil before you replaced the other parts ?
Do you have battery voltage on the positive side of the coil with the key on and in crank mode ?
Is the coil wire not sparking, or are you not getting spark at the plugs ?
Is the distributor rotor turning when you crank the engine ?

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05 Ford Escape, coils #3 & #4 not firing. We've replaced the battery, spark plugs, alternator, coil packs, & pcm. Had pcm reflashed. Garage said it had to be coil packs, but just replaced coil packs 3


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1 Answer

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