Re: 2000 Ford Crown vic P71 wont stay on
Idle Air Control as mentioned above. 99/100 times with these symptons on these cars it's the IAC. I've replaced two on my '98 with 165k miles.
'98 Crown Vic LX
-167k miles and counting. Still used as daily driver.
'99 Crown Vic Police Interceptor
-Completed full PI swap
-Marauder Airbox & 80mm MAF
-'04 CVPI Ziptube
-ADTR ported plenum
-Steeda Intake Spacer