.
Make payments with PayPal - it's fast, free and secure! registry | CVN on Facebook | tech | links | news | email login | chat Make payments with PayPal - it's fast, free and secure!


Welcome to CVN - Your Panther platform headquarters!


Custom Search


Page 1 of 2 1 2 >
Topic Options
#2053772 - 05/24/10 01:55 PM Bad mpg on 1999 Crown Vic Police Interceptor
spicyfishstick Offline
n00b

Registered: 05/21/10
Posts: 13
Loc: Arkansas
I recently bought a 1999 Ford Crown Victoria Police Interceptor, of which I am in love with, but the thing gets maybe 12 mpg. That does not please me at all especially since the guy that sold it to me said it get about 17 city and 22 highway. I know this dude jipped me, so now I need to figure out how I can make it better. Any suggestions?
_________________________
Only you have the ability to define what happiness is.

1999 Ford Crown Victoria Police Interceptor - 134k miles

Top
Links
#2053775 - 05/24/10 01:58 PM Re: Bad mpg on 1999 Crown Vic Police Interceptor [Re: spicyfishstick]
97sicvic Offline
Over the Hill

Registered: 04/16/07
Posts: 1238
Loc: northeast ohio
change air filter, fuel filter, spark plugs, clean M.A.F. sensor, change P.C.V. valve, oil change, and then pull your P.C.M. fuse in the fuse box under the hood, let car sit thirty minutes, put P.C.M. fuse back in and go drive her for an hour.

Betcha that will fix her up good for yah!
let us know if it does!
_________________________
1997 C.V.P.I. Retired June 2012 at 350,000 Miles (R.I.P.)
Present: 2004 C.V.P.I. 130,000 miles Running Strong all Day Long!!

Top
#2053819 - 05/24/10 02:46 PM Re: Bad mpg on 1999 Crown Vic Police Interceptor [Re: 97sicvic]
97sicvic Offline
Over the Hill

Registered: 04/16/07
Posts: 1238
Loc: northeast ohio
P.S. do not forget your blinker fluid and to clean the cop chip!
_________________________
1997 C.V.P.I. Retired June 2012 at 350,000 Miles (R.I.P.)
Present: 2004 C.V.P.I. 130,000 miles Running Strong all Day Long!!

Top
#2053820 - 05/24/10 02:47 PM Re: Bad mpg on 1999 Crown Vic Police Interceptor [Re: 97sicvic]
Tracy Offline
Over the Hill

Registered: 09/07/09
Posts: 3827
Loc: West Bend, WI, USA
And don't forget to take the dead hookers out of the trunk!!
(They add a lot of weight ya know.)
_________________________
1999 Deep Wedgewood Blue & Rust P71, 21x,xxx miles, full cloth interior, 3L55 RAR, BH1976 Headlight Relay Harness, and a few other mods. Former Chippewa Falls, WI PD car. I'm the 3rd owner of car.
Now with Mustang Wheels, Honeycomb Grille, and Ford AM/FM CD player with RDS.



Download your Owner's Manual FREE from the Ford Owner's Site

Top
#2054033 - 05/24/10 08:15 PM Re: Bad mpg on 1999 Crown Vic Police Interceptor [Re: spicyfishstick]
gDMJoe Offline

Poobah

Registered: 06/03/03
Posts: 7375
Loc: Timbuk3, MI
.
In addition to the above maintenance ...

SeaFoam treatment or AutoRX to remove carbon built-up ( NPIs are notorious for this ) and clean the fuel system.

Other common factors in poor MPG ...
  • tire pressure.
  • front-end alignment and condition of suspension components.
  • neglected routine, schedule maintenance.
  • not using Over/Drive.
  • long periods of idle.
  • unnecessary weight in the vehicle. *Junk in the trunk.
  • driving style.
  • not keeping the vehicle clean and polished.
  • etc., etc., etc..
_________________________

-click the Vic-

Top
#2054069 - 05/24/10 08:54 PM Re: Bad mpg on 1999 Crown Vic Police Interceptor [Re: gDMJoe]
gord_bolton Offline
Over the Hill

Registered: 05/06/02
Posts: 4691
Loc: Saskatoon, Saskatchewan
Release parking brake and make sure no calipers are dragging.

Top
#2054377 - 05/25/10 10:35 AM Re: Bad mpg on 1999 Crown Vic Police Interceptor [Re: gord_bolton]
toddub Offline
Member

Registered: 01/03/03
Posts: 140
Loc: Shreveport, LA
I think the 99 had a different rear end with lower gearing that gave it worse milage then the 98. But I am not certain.
_________________________
2000 P71 373,000 miles retired
2001 P71 418,000 miles retired
2001 P71 140,000 miles Active
1983 F350 With Holmes 440 Wrecker Bed & Wheel Lift

Top
#2054435 - 05/25/10 12:11 PM Re: Bad mpg on 1999 Crown Vic Police Interceptor [Re: toddub]
randycarroll Offline
Member

Registered: 11/06/06
Posts: 205
Loc: PNW/SoCal
I own both an 04 and 99 CVPI

Both cars got around 200 miles for tank. My 04 has gotten around 250 per tank though since I changed my tires/alignment.

Top
#2054458 - 05/25/10 01:10 PM Re: Bad mpg on 1999 Crown Vic Police Interceptor [Re: randycarroll]
flyboy Offline
Ret US Army Medic
Poobah

Registered: 07/23/05
Posts: 5188
Loc: Chillicothe, Mo
My second CV was a 99 CVLX. Have no idea what the rear gear was but I drove from NJ to Mo in via I70 in 2002, which was the first trip on any amount & when I got back to NJ I went to the dealer I had bought it from & thougt I had figured wrong because my average for 3k was 28.5 mpg. His reply was that they are supposed to get mpg such as that. He was correct because when I came to Mo to stay in 2003 again 27-29 mpg. Both times I drove the same route I70 was under construction & the detour was on secondary roads with the max speed was 55-60 which was probably the reason for the mpg.
_________________________
Very happy with the MKS. Finally got used to all the bells & whistles. Better handling, good MPG (25-27 highway) Better stopping distance & much faster acceleration.

Top
#2054475 - 05/25/10 01:40 PM Re: Bad mpg on 1999 Crown Vic Police Interceptor [Re: toddub]
Mileaway Offline
Posting Addict

Registered: 10/06/05
Posts: 16817
Loc: Sacto. Calif.
 Originally Posted By: toddub
I think the 99 had a different rear end with lower gearing that gave it worse milage then the 98. But I am not certain.



supposed to get better mileage with low ratios


anyway...
I'm gettin maybe 14/gal...
if that

probably due to 9 yr/old plugs with worn tips

runs smooth regardless

possibly the brief spirited 85+ drivng is somewhat reposnsible also...
_________________________
2000 P71 Interceptor orig. equip.near mint parchment int.& carpet 155,000 mi. 3.55 rear


Little Anthony: That's all the television there is.











Top
#2054477 - 05/25/10 01:41 PM Re: Bad mpg on 1999 Crown Vic Police Interceptor [Re: flyboy]
Crown Nick Offline
Over the Hill

Registered: 01/12/07
Posts: 3244
Loc: Houston, TX
 Quote:
My second CV was a 99 CVLX. Have no idea what the rear gear was but I drove from NJ to Mo in via I70 in 2002, which was the first trip on any amount & when I got back to NJ I went to the dealer I had bought it from & thougt I had figured wrong because my average for 3k was 28.5 mpg. His reply was that they are supposed to get mpg such as that. He was correct because when I came to Mo to stay in 2003 again 27-29 mpg. Both times I drove the same route I70 was under construction & the detour was on secondary roads with the max speed was 55-60 which was probably the reason for the mpg.



^^^^it most likely had 2.73s which are great MPGs gears.

To the OP, if you just bought this car, it's probably time to do maintenance and get everything in tip-top shape. You have no idea of the previous maintenance, so do what others have suggested and tune her up. I have a '99CVPI too and it gets a lot better than 12mpg. Highway/City mix in Houston traffic, I average about 19mpg.

Another typical culprit for bad gas mileage are the o2 sensors.

btw, you don't mention the mileage on the car. Might want to put year and mileage into your sig.

Good luck with the new purchase.
_________________________


Top
#2054715 - 05/25/10 08:39 PM Re: Bad mpg on 1999 Crown Vic Police Interceptor [Re: Crown Nick]
spicyfishstick Offline
n00b

Registered: 05/21/10
Posts: 13
Loc: Arkansas
thanks for all the suggestions, i'll be sure to implement those as soon as possible. What would be the best o2 sensors to buy?
_________________________
Only you have the ability to define what happiness is.

1999 Ford Crown Victoria Police Interceptor - 134k miles

Top
#2054805 - 05/25/10 10:00 PM Re: Bad mpg on 1999 Crown Vic Police Interceptor [Re: spicyfishstick]
Crown Nick Offline
Over the Hill

Registered: 01/12/07
Posts: 3244
Loc: Houston, TX
Motorcraft, but I would do basic tuneup items first before replacing the o2 sensors. Just throwing it out there as a potential source or part of the problem.
_________________________


Top
#2054904 - 05/26/10 12:29 AM Re: Bad mpg on 1999 Crown Vic Police Interceptor [Re: spicyfishstick]
Raybo Offline
Member

Registered: 04/18/09
Posts: 483
Loc: Clearwater, Florida
I have a 98 CVPI and bought it with 79,000. Major tune-up and still the best it did was 15.5 mpg's with 3.27 locker rear.And thats driving like an old lady.

3K miles later the ac clutch started to fail so I replaced that clutch and the belt tensioner and idler and put a new gatorback belt on it and now I'm getting 16.5 and thats after romping on it now and then 'cause its running so much better. I think it was the ac clutch was putting alot of drag on the belt.It was really bad....missing most of its bearings.The new motorcraft clucth works great. very quiet.
Thanks to Larry340 for his help on that

So....

Here's what you do. Take the serpentine belt off the front of the motor. Really really easy takes 10 seconds. And then spin everything by hand. Water pump...idler..tensioner...ac clutch..pspump. See if anything is really bad as that will suck up alot of horsepower and gas.
Good Luck.
_________________________
Sig removed. Read the rules.

Top
#2059166 - 05/31/10 07:05 PM Re: Bad mpg on 1999 Crown Vic Police Interceptor [Re: Raybo]
Hogan Offline
Rookie

Registered: 09/20/09
Posts: 84
Loc: Detroit MI
 Originally Posted By: Raybo


3K miles later the ac clutch started to fail so I replaced that clutch and the belt tensioner and idler and put a new gatorback belt on it and now I'm getting 16.5 and thats after romping on it now and then 'cause its running so much better. I think it was the ac clutch was putting alot of drag on the belt.It was really bad....missing most of its bearings.The new motorcraft clucth works great. very quiet.
Thanks to Larry340 for his help on that

So....

Here's what you do. Take the serpentine belt off the front of the motor. Really really easy takes 10 seconds. And then spin everything by hand. Water pump...idler..tensioner...ac clutch..pspump. See if anything is really bad as that will suck up alot of horsepower and gas.
Good Luck.


Just what I needed to read. I noticed that my a/c was really draining on the motor! Drove out to the Irish hills running just the vent, spirited driving and all and I still got 24mpg. This weekend I had the a/c on and drove slower and still lost over 8 mpg!!!! Have to check the clutch!!

Thanks for the post!
_________________________
2000 PI Ex-Woodford County IL. Sheriff Patrol Car. 127K and going......


Top
Page 1 of 2 1 2 >



Moderator:  dRock96Marquis, Liquid 
Who's in Chat??
Google!
Who's Online
16 registered (Chicago2VP71, cruz07, D-Fenz, Chaplian, a_d_a_m, adriano, 3 invisible), 71 Guests and 46 Spiders online.
Key: Admin, Global Mod, Mod
Shout Box

Email Login
EMail Login Name
Password
 New users, sign up!
Top Posters (30 Days)
Chicago2VP71 466
BigMerc96 169
Ezbok58a 167
a_d_a_m 155
BlackVic_P71 139
road_pizza 113
73vwTodd 104
BigNSlow 104
KayTar 99
aknox077 94
Featured Member
Registered: 01/21/12
Posts: 93





Copyright 2000-2013 by Crownvic.net and Steve Spaulding. All Rights Reserved.
The photographs, graphics and data contained in this Web site are the properties of the contributors, or Crownvic.net and may not be used without expressed written consent.
Crownvic.net is not affiliated with the Ford motor company.

Happily consuming the fuel saved by Prius owners!