how do i turn the idle down?


Asked by Jul 11, 2013 at 07:11 PM about the 2006 Ford Crown Victoria Police Interceptor

Question type: General

the idle is to high

3 Answers

well there is may be a carburetor and you could adjust it just as you would a normal quadra-jet but is old technology and probably has a throttle body injection system...but the point is your ECM is going to set the idle speed, and you need to look for a vacuum hose that has fallen off...the fuel pressure regulator is an important one, because if it defaults...there will be only a vacuum leak (high-idle) and a lack of regulation from your fuel pressure regulator....think you should consider the notion of your fuel pressure regulator defective....things just do not turn up the idle by themselves~....unless there is a torn diaphragm on the fuel pressure regulator~

1 out of 1 people think this is helpful.
Tracy Hooks

Ok - I work on a Fleet of Police Interceptors - 800 of them fully equipped and ready for battle. No. You cannot change the targeted Idle RPM. The PCM will do all it can to achieve the set parameter. If the engine is racing or just idling high, look for a vacuum leak. Remove and inspect the PCV system hoses and valve (both sides of it), Look for any unmetered air from the MAF sensor to the Throttle Body. Is the "Check Engine" light on? Since your Throttle is a "Fly-By-Wire" system (completely computer controlled = no cables), the computer determines everything the throttle does - it even backs off of the butterflies to soften the transmission shifting. Last vacuum advice (If there's no check Engine light) is to check over your plastic intake manifold and Brake Booster. These are uncommon failures though. Last but not least, I would hook up a scan tool and watch the readings of the MAF sensor, Long and Short Term Fuel Trims and upstream O2 sensor activity. Your fuel pressure regulator incorporates a fuel temperature and pressure sensor and the pressure is more regulated by the duty cycle of the pump than by an external regulator. You can read fuel pressure and Fuel pump duty cycle from the scan tool too.

4 out of 4 people think this is helpful.

I am about to trouble shoot way too high idle on cold start, iac or vac, first gotta pull the data stream,

4 out of 4 people think this is helpful.

Your Answer

Add photo

Related Questions

Crown Victoria

Looking for a Used Crown Victoria in your area?

CarGurus has 1,654 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 2,558 listings starting at $1,300
Used Dodge Charger"
646 Great Deals out of 29,667 listings starting at $2,275
Used Lincoln Town Car"
46 Great Deals out of 2,364 listings starting at $1,542
Used Chevrolet Impala"
928 Great Deals out of 35,693 listings starting at $1,500
Used Ford Mustang"
736 Great Deals out of 41,064 listings starting at $900
Used Ford Taurus"
356 Great Deals out of 23,100 listings starting at $1,400
Used Ford Explorer"
1,363 Great Deals out of 71,762 listings starting at $300
Used Ford F-150"
3,272 Great Deals out of 216,641 listings starting at $1,500
Used Chevrolet Tahoe"
1,073 Great Deals out of 36,092 listings starting at $1,700
Used Toyota Camry"
1,601 Great Deals out of 98,436 listings starting at $895
Used Honda Accord"
1,262 Great Deals out of 78,683 listings starting at $1,400