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coilpacks: yellow jackets

new sparks NGK BCPR6ES 1ml gap

2000gtt manual, pod, exhaust.

The car was missfiring, so i changed the above items, and now it runs smooth, now i turn the car on and the engine light displays straight away, followed by the other 2 lights, yet it runs smooth and doesnt appear to be missfiring, any ideas? ive tryed taking the battery off for an hour to reset the ecu...

I did the paper clip diagnostic on the engine error codes...It came up with;

21 . Ignition signal circuit• No consecutive ignition signal while the engine is running.

Does anyone know what would cause this?? any ideas??

Are you running a stock ECU? Some aftermarket units/piggy back ECU will sometimes have he engine light constantly on.

I guess first thing I'd do is ensure that the connectors are clean and firmly in place between the coil pack and the wiring loom. Plug and unplug the connector 2 to 3 times to "clean" the connection - sometimes there could be some sort of oxidation.

Ensure coil packs are firmly screwed in place - but do not over tighten as you can damage the coils.

Ensure your spark plaugs are platinum or iridium - easier to fire as opposed to copper - if you are running copper plugs re-gap them to 0.9mm.

Hope that helps.

Failing that you could have got a set of dodgy coilpacks.

Not recommended - as the electronics would have different ratings - something may get destroyed. However if its strictly short term/emergency and you don't rev the car too hard - I cannot see any harm - I suppose its better to drive with different coils, than driving around with a mis-firing car... but that's just my theory anyways :banana:

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