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Cutting out under load

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Old 07-05-2009, 12:47 PM   #1
1st Gear Member
Join Date: Jun 2009
Vehicle: 89 Ford Mustang LX
Location: San Diego, Ca
Posts: 69
Default Cutting out under load

My 89 that I just bought cuts out under full throttle sometimes usually above 3500 or 4k rpm's. It doesnt do it every time its under load though. It kinda sputters like a miss or something. The car seems to idle ok and normal driving is ok. Any ideas?
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sick89 is offline   Reply With Quote
Old 07-05-2009, 06:04 PM   #2
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Join Date: Apr 2007
Vehicle: 67 Mustang Coupe
Location: California
Posts: 10,438

What are the plugs gapped at? And what condition is the ignition system in?
Who cares how much horsepower it has, all that matters is how fast it goes!

Untested 331, lots of suspension, chewing up corners.
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Old 07-05-2009, 06:07 PM   #3
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ignitor failing? spark plug bad? ignition wire condition?
-2006 Mustang GT convertible: intake, tuner, straight pipes, rollbar, blackout panel, front lip, and 20" wheels
-2003 Hyundai Tiburon GT: Eaton supercharger, Cobra exchanger, I/H/E, Apexi AFC
-2009 Mazda 6 GT: tinted windows and front signals, AutoExe springs, and Rotora BBK.
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Old 07-05-2009, 10:26 PM   #4
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Vehicle: 89 Ford Mustang LX
Location: San Diego, Ca
Posts: 69

Im not sure what the plugs are gapped at. I just picked up the car a week or two ago. Havent had much of a chance to look at anything. I just noticed that it doesnt do it all the time. In my old car I had a problem with the wire arcing to the header but these are all clear.
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Old 07-05-2009, 10:26 PM
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