How can I test my ignition coil ?
05-31-2010, 06:01 PM
#1
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How can I test my ignition coil ?
How can I test my ignition coils on a 99 4Runner with the V-6 ? ThinI minght have one going bad . Picked up a bad miss at take off and cruising . Can floor it and it almost goes away . OR if it is in park you can't tell it . Thanks
06-01-2010, 04:47 AM
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The coil may be cheap...I think you could pick one up from the zone for about $50-$75.... the igniter, on the other hand...is quite expensive... $300+ IIRC, keep searching on here for testing the igniter...I know I saw a thread about it not too long ago....
as for the coil....it kinda depends what year/make/model you have but heres a link to get you pointed in the right direction.....
http://www.ncttora.com/fsm/
as for the coil....it kinda depends what year/make/model you have but heres a link to get you pointed in the right direction.....
http://www.ncttora.com/fsm/
06-01-2010, 07:22 AM
#5
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I hear ya man, im the source of income as well, try http://www.rockauto.com/catalog/rafr...1277401k933326 i like to order from this site
06-01-2010, 11:35 AM
#7
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Coil packs are actually one of the more common causes for missing on the 3.4. Since you have 3 coil packs, replacing them at $75-90 ea. isn't very cheap on my standards either. Besides we don't even know if that's what's wrong and throwing parts at it and guessing is not the best way to diagnose and will almost always be the most expensive way to fix it.
Do you have a CEL code to tell you which cylinder is missing? If so, you can swap the coil pack with another one and if the miss moves to a different cylinder, you know which coil pack to replace instead of all 3. It could also be the coil boot(s) - the short rubber "wires" that go from the coil packs to the plugs directly below. These are much cheaper than the packs.
If you don't have a CEL, the coil packs can also be tested using a volt meter - refer to Team420's link to the FSM to get the proper #s to check it against.
Do you have a CEL code to tell you which cylinder is missing? If so, you can swap the coil pack with another one and if the miss moves to a different cylinder, you know which coil pack to replace instead of all 3. It could also be the coil boot(s) - the short rubber "wires" that go from the coil packs to the plugs directly below. These are much cheaper than the packs.
If you don't have a CEL, the coil packs can also be tested using a volt meter - refer to Team420's link to the FSM to get the proper #s to check it against.
Last edited by brian2sun; 06-01-2010 at 11:37 AM.
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