Engine missfiring when doing a kick down.
#11
Senior Member
True Car Nut
Yeah, yours will look somewhat different than the ones shown in the pictures, but the specs listed below the pictures are correct. Just use the correct values for your car. In this case, 0.5-0.9 ohms primary and 5.0-8.0 k-ohms secondary. If your coils look different than these:
Then we certainly do want to see a picture of them.
Then we certainly do want to see a picture of them.
#12
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No, thats it. I am going to try to measure the resistance and see what i get.
Or do you think i should get a totally new set and be sure that the coils are not the problem?
Or do you think i should get a totally new set and be sure that the coils are not the problem?
#13
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True Car Nut
If it were me, I'd trouble shoot first (and ask questions later...lol).
I don't normally like to spend money replacing parts that might be good. It can get expensive chasing a problem with parts.
I don't normally like to spend money replacing parts that might be good. It can get expensive chasing a problem with parts.
#14
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The reason it will run good with no load is because there is little load on the ignition system at this time as well. When you put more load on the engine (acceleration) this puts more load on the ignition system too and causes the misfire.
Mark the plug wires to keep them in the right order and then pull the wire ends off of the coils and look at the metal tips on the coil towers, also look inside the wire ends. If you see any corrosion on the coil towers, then that coil will have to be replaced. If you see any corrosion inside any of the plug wire ends, then that wire will have to be replaced (usually the wires are replaced in full sets but you said yours were not that old).
Mark the plug wires to keep them in the right order and then pull the wire ends off of the coils and look at the metal tips on the coil towers, also look inside the wire ends. If you see any corrosion on the coil towers, then that coil will have to be replaced. If you see any corrosion inside any of the plug wire ends, then that wire will have to be replaced (usually the wires are replaced in full sets but you said yours were not that old).
#15
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Thaks for the advice. Chasing with parts is probalby not a good idea.
I think i have to diagnose it first and then see where it leads me still i will check for corrsion.
I think i have to diagnose it first and then see where it leads me still i will check for corrsion.
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