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TDH888 TDH888 is offline
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Join Date: Jul 2009
Posts: 130
89 911 turbo Loosing power at 100mph

Hi guys ,

After replacing both fuel pumps , fuel pump relay , overboost switch & the yellow relay , i experienced another problem . The car can accelerate fast and freely revs until redline , but it seems its loosing power when it hits 100 MPH at 5th gear the car feels its loosing boost or fuel . It looses speed w/o shutting down . I try to regain speed by down shifting to second gear and it accelerate's hard from gears 2nd to 4th gear . But when it reaches 100 mph at 5th gear the problem arises again .

Thanks in advance,

Old 10-30-2017, 07:04 AM
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