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Yes, it is hard to start when cold and has a hesitation just off of idle. Then some days there is a short period when it is warming up that it runs great. Then when it reaches operating temp it has the hesitaion again.
I have cleaned the ISV. That helped some. I did the Air Flow Meter wiring TSB. That did nothing but needed to be done anyway. I changed the O2 sensor. That helped a little. Replaced a bad coil. That helped an amazing amount, but there is still that annoying hesitation that makes it not fun to drive.
Thanks
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Chuck
90 C2
78 911SC
79 911SC
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