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10-12-2003, 01:06 PM
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#1 |
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Mustang Maniac
Join Date: Sep 2000
Location: GA, U.S.A
Posts: 2,266
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I had a VERY similar problem with my 92 GT and like mike5p01, mine was a vacuum leak as well. I like to start off with easy stuff first, then move to all the sensors and module crap. CHeck the hoses (the rubber hose that had rotted on mine was the one coming from the intake and going to the emissions box). It started off like what you are talking about but then just got worse and worse where my car at a stoplight would surge and idle high then low then high. By that time, though it was obvious that it was a vacuum leak. IF you haven't already, check your rubber vacuum hoses first.
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351W-powered 1979 Ford Mustang Ghia notchback '79 Video @ Idle Stock 5.8L under 4" cowl 'glass hood, C4 w/ Transgo shift kit, Holley 750 cfm, Edelbrock Performer RPM intake; Fluidyne Al radiator, Flexalite 175 electric fan, 1 5/8" MAC shorty headers, FRPP Al driveshaft; S&W 6-point cage; 2.5" Off road H-pipe, 2-chamber Flowmasters, 8.8" Rear w/ 3.55s; Weld wheels (15x6;15x8), Front: 225/60/15, Rear: 275/50/15 Nitto NT 555R Drag Radials; 14 x 4” K&N X-stream air filter. '92 GT (5-speed) Small In Car Video Stock 5.0L, 2-chamber Flowmasters, MAC CAI, Tri-Ax, Al pedals... "Red, thou art my companion. Hasten now your quickened metamorphosis to Green that I may conquer all who dare abide there beside me. May they be left thither behind burnt black." ---Fox Body |
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