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P71ohtheirony
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• Jax, FL, USA |
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• Registered on 11/19/2014 |
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• 2 posts |
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 Posted:11/19/2014 18:44 |
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2001 crown vic police interceptor 4.6 has an issue when giving it more than 1/4 - 1/2 throttle. It stumbles. It's also very slow to get up to speed even if you baby the throttle. It shifts and o/d works. Twice now it has seriously stalled in the middle of driving, giving it barely any throttle would cause it to start seriously dropping rpms, but held the idle fine. After shutting it off and waiting a bit it fired up and went back to the original problem both times. Was told the MAF, tps, fuel filter and injector gaskets were replaced. Air filter cleaned and the engine seafoamed. Previous owner also had diagnostics done and the only codes were lean and rich, possibly because it's straight piped no cats. Any help is appreciated |
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P71ohtheirony
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• Jax, FL, USA |
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• Registered on 11/19/2014 |
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• 2 posts |
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Posted:11/19/2014 18:47 |
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Also it will change rpms when idling, but it's very subtle and doesn't happen often. |
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jdmeaux
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• Lafayette, LA, USA |
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• Registered on 1/5/2009 |
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• 525 posts |
• 1 Vehicle
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Posted:11/19/2014 18:57 |
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Replace the IAC.
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PROUD MEMBER of www.crownvic.net
It's just a SUPER-DUTY Mustang GT Sedan. 198K miles and still rolling HARD.
1997 Crown Victoria P71 SVT *** ex-US Marshall service (the CAR)
STOCK?? I bet it was modified. 
13.26 @ 107.24 MPH 1/4 mi w/ me, tools, & full tank of 93 octane
I added CAI, NICHE 19 X 8.5 " wheels with 245/45ZR 19 rubbers, and completely rebuilt the front end with poly bushings, Kooks headers, 2 1/4inch exhaust, TCI 2200-2400 rpm Stall converter
.PLANS:: engine upgrade, 5.4L 2v stroker, rebuild interior in leather w/ buckets, thinking about turbos
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