1997 grand marquis

Asked by Dec 07, 2017 at 08:07 PM about the 1997 Mercury Grand Marquis

Question type: General

When I'm driving my car down the highway going 65 mph and
it drops speed and my foot is still on the gas and it slows
down do it got something to do with the air flow sensor are
mass sensor

6 Answers

Idk

121,195

Good question, could also be excessive exhaust back pressure, fuel supply limited due to a bad pump or plugged fuel filter, O2 sensors not responding correctly as well as any number of sensor problems, grounding issues, etc. I think the first thing to check would be the fuel pressure and flow, then the exhaust back pressure, if it's still acting up then a live data scan should locate the problem.

1 people found this helpful.

Where can I find that at under the hood

121,195

There is a test port towards the rear of the engine on the fuel rail. You can purchase a DIY kit at your local parts store for the exhaust test.

Ok appreciate it man I know I'ma be spending bout 700 to 800 dollars

121,195

At least that, if you find you need parts try aftermarket first, it could save you some money.

Your Answer:

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 1,286 nationwide Grand Marquis listings starting at $1,250.

ZIP:

Mercury Grand Marquis Experts

  • #1
    Tracy Hooks
    Reputation
    6,110
  • #2
    kbro
    Reputation
    2,260
  • #3
    Js08016
    Reputation
    2,180
View All

Related Models For Sale

Used Lincoln Town Car
25 Great Deals out of 1,422 listings starting at $1,750
Used Ford Crown Victoria
751 listings starting at $1,900
Used Chevrolet Impala
549 Great Deals out of 25,538 listings starting at $790
Used Honda Accord
722 Great Deals out of 97,684 listings starting at $750
Used Chevrolet Tahoe
662 Great Deals out of 37,790 listings starting at $1,950
Used Ford Mustang
380 Great Deals out of 39,548 listings starting at $1,995
Used Ford Taurus
268 Great Deals out of 16,160 listings starting at $986
Used Toyota Camry
981 Great Deals out of 70,545 listings starting at $1,137
Used Ford F-150
2,251 Great Deals out of 188,015 listings starting at $1,200
Used Lincoln Continental
27 Great Deals out of 3,334 listings starting at $21,000

Used Cars For Sale

2011 Mercury Grand Marquis For Sale
3 Great Deals out of 23 listings starting at $5,000
2010 Mercury Grand Marquis For Sale
68 listings starting at $3,422
2009 Mercury Grand Marquis For Sale
3 Great Deals out of 75 listings starting at $4,838
2008 Mercury Grand Marquis For Sale
3 Great Deals out of 106 listings starting at $1,250
2007 Mercury Grand Marquis For Sale
92 listings starting at $2,495

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.