4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Loss of Power

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Old 11-04-2010, 09:20 PM
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stang98sa
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Default Loss of Power

Recently my stock stang started gradually loosing power upon acceleration. I can have the gas peddle almost to the floor and it seems as though the engine takes forever to catch up. I have replaced plugs and gas filter and neither fixed problem. I thought it might be the catalytic converters. Any insight on my problem?
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Old 11-04-2010, 09:30 PM
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Crazycarnut
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Is your engine revving with no power or is it not revving as well? stick or auto? The more info you can put out the better someone can help you.
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Old 11-04-2010, 09:39 PM
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stang98sa
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engine seems it is reving with loss of power as well when parked. Car has automatic transmission.
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Old 11-04-2010, 09:52 PM
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MU71L4710N
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clogged cats can cause this, but USUALLY theres a CEL code being thrown. is your car popping codes? (service engine soon/check engine light)

my car just had a fuel pump go out. it would drive normally under half throttle, but if i tried to floor it the car would literally go limp and start bucking, then catch up a bit, then fall back on its face. could barely rev it in neutral either.
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Old 11-04-2010, 09:59 PM
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stang98sa
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No service engine soon lights....no warnings on dash. It doesn't spit or sputter like a fuel issue. It is like going slow with your foot all the way down on the accelerator. Unresponsive.
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