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Old 01-17-2015, 04:30 PM   #1
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Location: Allen, TX
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2000 boxster s stumbly idle

If it's a miss, its slight.

had Porsche plugs and coils done 12k miles ago
No codes on durametric

logged misfires, shows none

logged engine roughness, and it does fluctuate, but I don't know what is normal.

Any ideas?


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Old 01-17-2015, 04:43 PM   #2
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Try cleaning the throttle body & butterfly flap leading / trailing edge with carb / injector cleaner, that normally helps.......
2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley.
2001 MV Agusta F4.
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Old 01-17-2015, 04:49 PM   #3
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That's an idea.

I still thought about plugs. Last summer I had s bad aos with a decent amount of oil in the manifold. Possibly fouled the plugs?
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Old 01-17-2015, 05:01 PM   #4
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There is a new DIY for throttle body cleaning in the DIY section. Totally fixed my idle problem which had been getting worse... Much easier than getting in to mess with the spark plugs in my opinion. Most recently the idle would get so stumbly it felt like the car was about the shut off, then the rpm would shoot up like a man desperately gulping air.

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