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Bad Coils

smurf80

By smurf80,
in Engines & Forced Induction

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smurf80 Experienced

smurf80

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hey guys,

I'm just wondering who with r34s on here have experienced bad coils? I've searched around and found problems with a missfire in the 4000 to 4500rpm on turbo cars but what do NA symptoms have? how can u tell its a coil and not a plug without physically inspecting it? reason I ask is mine is running like a dog (sounds like a WRX) and there is a lot of stuff to unplug to get to the cam valley to check.

so any help on what the symptoms are would be great I suspect its a coil but need some reassurance.

thanks

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Howie Grand Master

Howie

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NA's with bad coils experience the same problems as their turbo counterparts. My last car was a ca18de and i went through about 12 coils on it. Car feels like it's missing a cylinder and sounds like a wrx but without any pull. There's a few threads on coil maintenance and cleaning, check them out.

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smurf80 Experienced

smurf80

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Also can anyone tell me it is a coil from my symptoms?

Cold start is fine will drive around OK for a long time or short time its totally random. Engine light comes on car sounds like a WRX has poor accelertation etc. But when it is driving OK it does have a miss as well?

Any help would be great

Cheers

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Howie Grand Master

Howie

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Cold start is fine will drive around OK for a long time or short time its totally random.

Engine light comes on car sounds like a WRX has poor accelertation etc. But when it is driving OK it does have a miss as well?

Generally speaking, nissan coils generally get worse when they're hot. On my previous car, when the coils were bad they would generally be okay for about 30 minutes then it would sputter and the engine light would flicker as you say.

How many kms has your car done? has it ever had the coils replaced? I would definately give it a good clean, take out the carbon deposits on the tip perhaps give it a light sanding, silicone the boots and clean the leads. Come back and tell us if that helps solves your problem.

Investigate the possibility of going to splitfire replacement coils... I wish I had known about them earlier, that would've saved me going through a dozen coil packs.

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Howie Grand Master

Howie

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Thanks again Howie will give that ago. Car has done 60,000k's Can they go around there? I have heard R34's are notorious for coil failure.

My first set went at 68,000kms on my last car.

It's not just R34 notorious for coil failure, it's basically any nissan car pre-2001 that uses the coil pack system. CA/SR/RB's.

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MissR34 Grand Master

MissR34

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ive had my r34 for 7 months and had 3 coils go on me. in the end i replaced all of them with splitfires. its too costly too continue to replace each coil as they go. my r34 n/a has done 67,000. the last 2 times i lost the coils the car would be running on all 6 cyclinders, then lose a cylinder then gain it back etc. those two coils where showing a greater heat resistance to the others. hope this helps!

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