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Sedans Ford Crown Victoria/Mercury Grand Marquis Ford Crown Victoria and Mercury Grand Marquis
3244 messages, Last post on Aug 25, 2009 at 8:13 PM
You are in the Ford Crown Victoria/Mercury Grand Marquis Forum. Your Hosts are pat & karens
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Autozone will do a free code scan. The check engine light covers so many things - it is a noncritical issue, but you shouldn't go for months with it lit. If it was me, I'd check the gas cap, and then make a stop at Autozone to see what codes are thrown. |
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Replying to: ksjo30 (Jun 19, 2005 6:13 pm) |
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I was wondering what drivers of late-model CVs and GMs are finding they get in terms of gas mileage. I have been steadily improving mine; even with the A/C going virtually all of the time, combined city/highway (although mostly highway) I'm getting about 23.7 mpg; this week I went 596 km without having to fill up, netting me a cool 26 mpg! These numbers impressed me quite a bit. Although not Toyota Echo territory, I couldn't ask for more from a 4000 lb, V8 sedan that does not feature any sort of cylinder deactivation (thank God  ).
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I purchased my 2004 CV (LX Sport, dual exhaust, 239 HP) on August 1, 2004...coming up on 1 year, 20,800 miles, so I think I am broken in...have yet to exceed 22 mpg on highway, tried 87, 89, 93 octane, no difference in performance or mpg...kinda disappointed, really...sticker said 17/25, and I personally know of folks with late model Town cars who obtained 27-28 mpg with all highway running...75% of my driving is interstate...AC on or off, no matter...should I trade for a Honda Civic???...
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Replying to: marsha7 (Jun 24, 2005 6:35 pm) Just me personally, but I would never trade a CV for a Civic . At least up here in Canada, every second car is a Civic! BTW do you find that the middle portion of your gas tank - i.e. the range from one quarter to three quarters - is your best mileage zone? In other words, I find that the top quarter of the tank seems to get drained very quickly, while the quarter to three quarter range lasts forever.
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I think what is hurting you is the different rear end gearing - 3.27 vs. 2.73 for the LX and Base models. I think that is it, since my 94 has the 3.08 rear end, and it is pulling around 24-25 mpg on the freeway. Also, my understanding is the 03 redesign added weight to the car via a heavier frame. If you considered swapping rear end gearings, you also have to consider the computer and speedo issues. It can be done, but not sure how much it would cost you.
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Replying to: turbo301 (Jun 24, 2005 7:30 pm) One big difference, though. When a General Motors gage first says empty, you usually have about 5 gallons left. When a Ford gage first says empty, you had better find a gas station...and quickly. |
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Replying to: jsylvester (Jun 24, 2005 8:38 pm) |
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Replying to: johnclineii (Jun 25, 2005 4:21 am) As for mileage, the first summer I had the '98 (2003), I got 25 hwy constantly. Now I average 22. I did just change the air filter so I'm hoping that'll help. But I've got the Focus for good mileage anyway...
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| I have suspected the rear for some time, as I do have the higher ratio...but then how does the vehicle get the 17/25 rating, when it is obvious that certain factors have changed, which may directly affect mileage??? | |
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