Car is hesitant at take off, almost stalls @idle, takes off like a bullet @times. Replaced motor was 4.6 HP interceptor kept top. Only bottom end was Replaced with grand marque motor.any ideas.


Asked by Aug 05, 2015 at 03:40 PM about the 2003 Ford Crown Victoria Police Interceptor

Question type: Maintenance & Repair

2003 Crown Vic Interceptor
Sorry for two posts!

7 Answers


Check air filter and clean throttle clean or replace Idle Air Control valve or mass air flow sensor depending on which one is on your vehicle replace fuel filter if have not done so in a while add fuel injector cleaner to gas tank and use the middle grade or high test gas to help clean out the gum and carbon build up.

1 out of 1 people think this is helpful.
Best Answer

Thank you


Cleaned throttle body and replaced the idle air controller. Now there is a noise like a humming coming from the throttle body. Any suggestions?


Did you put the idle air control back on correctly sounds like its sucking in to much air. Did you clean the surface off good and install a new gasket.


Yes we did all of that.


Sorry do not no what else to tell you but to go over what you had done and make sure everything was put back together correctly. It has to have something to do with what was done to vehicle since it was not doing it before.


maybe you have a exhaust leak or could be misfiring do to you not having a tune up

Your Answer

Add photo

Related Questions

Crown Victoria

Looking for a Used Crown Victoria in your area?

CarGurus has 1,643 nationwide Crown Victoria listings starting at $1,950.


Search Ford Crown Victoria Questions

Ford Crown Victoria Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 1,610
#2 Tom Demyan
Tom Demyan
Reputation 790
#2 FordNut
Reputation 790
View All

Related Models For Sale

Used Mercury Grand Marquis"
46 Great Deals out of 2,562 listings starting at $1,300
Used Lincoln Town Car"
50 Great Deals out of 2,391 listings starting at $1,542
Used Ford Mustang"
720 Great Deals out of 41,399 listings starting at $900
Used Chevrolet Impala"
931 Great Deals out of 35,797 listings starting at $700
Used Ford Taurus"
344 Great Deals out of 23,096 listings starting at $1,400
Used Ford Explorer"
1,313 Great Deals out of 71,768 listings starting at $300
Used Ford F-150"
3,156 Great Deals out of 216,422 listings starting at $1,000
Used Chevrolet Tahoe"
1,105 Great Deals out of 36,351 listings starting at $1,700
Used Mercury Marauder"
49 listings starting at $7,300
Used Chevrolet Camaro"
795 Great Deals out of 38,866 listings starting at $2,650
Used Toyota Camry"
1,592 Great Deals out of 98,270 listings starting at $895
Used Honda Accord"
1,265 Great Deals out of 77,933 listings starting at $1,395