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Intermittent loss of power ?

  • Lambert
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02 Sep 2016 19:44 #171946 by Lambert
When my coil packs died they manifest as a huge flat spot in the rev band right at 2000 rpm. Replacement from eurocarparts and off we go, clean up from idle to 6500 rpm. Brilliant.

Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
Bellerophon (2024 grello van daily
ADOS Attention Deficit Ooooh Shiny!
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02 Sep 2016 21:13 - 02 Sep 2016 21:18 #171947 by skywalker65
That's correct. Initial problem was that the car started ok. Got about 5 miles in then it would occasionally hiccup. Left it a few weeks and it got to the stage where it would run ok from cold but then as heat got in to the engine it started to drop on to 2 cylinders. Fairly convinced that this ignition issue is what ultimately destroyed the cat in the manifold. Dumping unburnt fuel in to it doesn't do it a lot of good.
The feeling when the cat had collapsed was like an 2 stroke moped with a blocked exhaust. Occasionally it would clear then back to lack of power.
The coils are prone to failure due to their location. Most stick type coils seem to have a high failure rate on all types of cars.
Coils don't show up on a diagnostic as such compared to sensors. I'm assuming the iridium plugs are ok. Originally designed for the North Star engine, it's not very often that they're the cause of such issues

If in doubt ...... Flat out ??
Last edit: 02 Sep 2016 21:18 by skywalker65.
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03 Sep 2016 10:35 #171966 by PAULWW
Replied by PAULWW on topic Intermittent loss of power ?
OK..revised strategy then...back to plan A..new coil packs it is. Seem to vary in price on ebay from £15 ea. to £75.

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04 Sep 2016 07:32 #171983 by skywalker65
The original coils are Denso Paul. I got NGK ones as the weren't a bad price. Coupled with the fact they've been dealing with ignition systems for ages. Might be worth replacing the plugs if you haven't already done so. On the vvt engine they are replaced at 48,000 miles and as I have mentioned before are the iridium type.

If in doubt ...... Flat out ??
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10 Oct 2016 10:11 #173313 by PAULWW
Replied by PAULWW on topic Intermittent loss of power ?
Problem solved....new coil packs and normal service is resumed !

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10 Oct 2016 13:06 #173316 by jim
Replied by jim on topic Intermittent loss of power ?

PAULWW wrote: Problem solved....new coil packs and normal service is resumed !


Thanks for letting us know how it turned out. I have the same issue.

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