Under load miss at +2500rpm - TCCoA Forums
 
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post #1 of 5 (permalink) Old 10-10-2017, 05:58 AM Thread Starter
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Under load miss at +2500rpm

So looking for some advice as I've been fighting a miss with my 94 4.6 bird. No check engine light so I've replaced the plugs, wires and coils.
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post #2 of 5 (permalink) Old 10-10-2017, 01:49 PM
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Usually those misses related to spark occur at a lower RPM, like 1500, when climbing a hill in OD. High load and low RPM. Hopefully you replaced the coils with Motorcraft?

2500 is above normal cruising RPM, you're really starting to get into the throttle then, unless you have gears.

Al

97 T-Bird LX 4.6 - 80k miles
94 Supra TT Auto - street/strip car
04 CVPI- Brenda's car - 76k miles
Previous Fords:
95 T-Bird LX 4.6 - fully optioned, owned 15 years, 220k miles
96 Cougar XR-7 4.6- Brenda's car, owned 11 years, 187k miles
88 T-Bird 3.8 - first T-Bird, owned 5 years, 206k miles
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post #3 of 5 (permalink) Old 10-10-2017, 01:51 PM Thread Starter
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i run 4.11 gears with a chip
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post #4 of 5 (permalink) Old 10-10-2017, 05:00 PM
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Under load = Coil packs!

Last edited by ikutoisahobo; 10-10-2017 at 05:15 PM.
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post #5 of 5 (permalink) Old 10-11-2017, 05:54 AM Thread Starter
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coil packs are new. roughly 105000 miles, original fuel pump
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