1997 Mustang GT holding back - Ford Mustang Forum
 
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post #1 of 5 (permalink) Old 05-10-2010 Thread Starter
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1997 Mustang GT holding back

I dropped my pony at the body shop the other day for my new paint job. On the way there it was holding back, almost like it was misfiring. It drove fine that morning on my way to work. I'm in a pinch because it's in the body shop until the 18th or 19th, and I plan to take it to Ocean City MD for the annual "Cruisin' OC" event on the 20th. I can't miss this event, so I am looking for any feedback that could help. Brief overview under the hood: BBK cold air intake and under drive pulleys,Trickflow upper plenum and 75mm throttle body,Accel coil packs and Summit racing equipment wires, 80 mm MAF. Now the only difference between driving to work that day and taking to the body shop is that the heat and humidity had climbed signifigantly. The car had started holding back some under heavy accelleration over the past couple of days when it started getting warmer out and higher humidity. I'm racking my brains out over this issue.

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post #2 of 5 (permalink) Old 05-10-2010
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How old are your coil packs, wires and plugs?


2014 Mustang GT, A6, Grabber Blue
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post #3 of 5 (permalink) Old 05-10-2010 Thread Starter
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Packs and wires only about 2-3 years and plugs about 20k ago ( autolite double platinum) about 35k on coil packs and wires.
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post #4 of 5 (permalink) Old 05-10-2010
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With the engine on check to see if coil packs are giving spark to individual wire.

1996 mustang GT 5 spd
PI heads and PI intake manifold
AFM N-22 Cams
Sportline Lowering Sprngs, SFC's
BBK CIA, 75mm Thottle Body, 75mm TrickFlow plenum, Longtube Headers, Offroad X-pipe, Flow masters , 3.73's , BBK fuel regulator, MSD coil packs & wires
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post #5 of 5 (permalink) Old 05-20-2010 Thread Starter
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plenty of spark,wires seem to be in good shape. I pulled 3 random spark plugs and the gap was far out of spec. Replaced them with new motorcraft plugs and it's a little better,but still under heavy throttle it is just not giving all it should.
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