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Member 911 Anonymous
Join Date: Sep 2007
Location: Rancho Palos Verdes
Posts: 14,329
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I would check the injectors by pulling each connector one at a time to see which one may be faulty.
The other thing would be is to set the dizzy to tdc and pull it out to see if you have lateral slop, if too much play you will get miss fires. If you axial play the dizzy's internal snap in bearings are shot, time for a new used dizzy, a good one would be one that has resistance when spun, if it spins freely, find one that doesn't.
Next would be to crack the afm and inspect the poteniometer membrane, if groved to metal, it is shot, if not it could be salvaged but you do this at your risk. Find the method from the 944 forum, there is also a YouTube video on how to.
As always do the easy stuff first, if you have a 3.2 buddy near by swap the afm if the symptoms can be reproduced.
Jim
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'85 Carrera Targa
Factory Marble Grey/Black * Turbo Tail * 930 Steering Wheel* Sport Seats * 17" Fuchs (r) * 3.4 * 964 Cams * 915 * LSD * Factory SS * Turbo Tie Rods * Bilsteins * Euro Pre-Muff * SW Chip on 4K DME * NGK * Sienes GSK * Targa Body Brace
PCA/POC
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