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phillip hall Posted on Dec 09, 2011
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Why am i not recieving sparks from the coilpack?

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William Charnigo

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  • Posted on Dec 12, 2011
William Charnigo
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You need battery power and timing control from the engine. They spark is created is to energize the coil and then remove the voltage, creating a large spark on the secondary side. I don't really know if this is electronic ignition or the old points and distributor system, but I would look to see that power is getting to the primary side of the coil pack.

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I have no spark in the coilpack and n spark in the spark plug wire as well

A failed crank sensor can prevent your car from getting a spark.
When cranking the car's computer looks for a signal from the crankshaft indicating the crankshaft is turning to enable spark and fuel. A timing belt that has broken in some cars can cause no fuel and no spark since the crankshaft position sensor gets no signal that the overhead camshaft is turning.
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Attached is a diagram of where the plugs and coilpacks are located, you need to remove the air intake resonator box to access this area. Plugs should be changed around 100K miles. Use only AC Delco 41-103 Iridium plugs. #1 is the coilpack and #5 is the spark plug



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Check the coil pack. they are common to fail and the engine will usually misfire for a while and then not start when it gets cold out. you can do a quick check by removing one plug wire at a time and having someone crank the engine. the spark should jump right down the tower the wire goes onto to the base of the coilpack. if this does not happen then you need to replace the coilpack first. take the 6 tork head screws out and remove the wiring under it that goes to the module. carefull not to mix up the wires under the coilpack or to the spark plugs. reinstall the coilpack and reinstall the plug wires and try to start the engine. i will look for a response incase you need more help. good luck.
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make sure you are getting spark through the sparkplug wires. a sparkplug tester is the easiest way, or take a wire off one of the plugs try starting it and have another person watch the wire to see if a spark is coming off the wire to the sparkplugNOTE set the wire close to the sparkplug but leave a small gap between plug and wire so you can see the sparks. if not getting spark check all fuses first, otherwise the coil could be bad. or it could have coilpacks and one could be badNOTE every coilpack has two studs for wire, sometimes only one side of coilpack works if so it is bad both sides haft to work.
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coilpack or spark plug required. More likely coilpack, they are known to fail early.

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Before you go checking parts that aren't there, unplug each coilpack connector one at a time with the engine running. After unplugging a coilpack you should hear the idle drop. If you unplug a connector and there is no change in idle, that is your problem cylinder. You can then check to see if there is spark by removing the coilpack and touching it to a ground on the engine, you'll hear it click. If you have spark, check the spark plug, if the spark plug is good, it's most likely a bad fuel injector. You can verify a bad injector by doing a resistance test after removing the connector. Injector replacement is a nightmare on these cars, but it can be done without pulling the plenum if you're mechanically inclined. Visit www.zcar.com for more help.
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