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YOUR RESEARCHMY00 3.4 - flatspot - any ideas or is it normal?
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Reset ecu now all is fine 8)
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Comparing the drive of my 996 which I have only personally covered 800 miles in so far (the car itself is an MY00 with 15900 miles) to my MY02 Boxster I have noticed the 996 has a very slight flatspot.
It is there all the time, hot or cold and it is so early in the rev range, I would guess between 800 & 1100RPM
If you drive spirited it is hardly noticable but when driving Miss Daisy (round the town) it seems just ever so slightly hesitant, almost like it is going to stall.
Sitting in the car at tick over (which seems to be quite low 600ish RPM???) if I very slightly press the pedal down to try and up the idle to say 1000RPM there abouts, it doesn't die but it toys itself, in other words the idle bounces from 500 to 1500RPM, my question is, is this normal for the 996? :?
Happens regardless of load, can have AC, lights, wipers & everything else electric on but fault is still identical.
This IMO rules out the throttle body / idle control
I am leaning towards MAFS but unsure
Seems I was exagerating on the fluctuation, just checked it again, it toys from 800 to 1000RPM, doesn't do it when on initial choke (1st minute of warm up)
Hi
my yr 00 3.4 911 tickover is also slightly erratic but no so more than Boxster S I used to have. Around 8-900 rpm with air on, 6-700 off. When I first got the car it was more erratic & even missed at tickover but having done 1500 miles is now sweet. I would give the car a good blast & see if it does not settle down before wasting your dosh...
