About once a week my car will sputter & die when I let off the gas & sometimes while still pressing gas & sometimes the idle fluctuates. We replace idle position sensor & still acts up


Asked by Jul 10, 2014 at 05:47 PM about the 1987 Mercury Grand Marquis

Question type: Maintenance & Repair

4 Answers


Clean your MAP sensor with maf cleaner. Possibly replace the IAC (idle air controll) valve. Any scan codes?


Don't know where those r located and no scan codes


Google them. the MAF sensor is on the Air cleaner top, you may need a tamper-proof driver to undo the screws. MAF cleaner is at any auto parts store, it's amazing what that can do sometimes, I had a similar prob. once. The IAC is on the intake manifold somewhere, you may find it on google or utube.


Thank you will give it a try

Your Answer

Add photo

Related Questions

  • Very high idle 5 answers

    Cleaned engine. Blew off, dried everything, disconnected all wiring connectors blew dry and reconnected all wiring, hoses, and removed all coilplugs blew out dried boots and applied dielectric lu...

    2002 Mercury Grand Marquis


    Maintenance & Repair

  • how can i get the fuel pump to work? 17 answers

    the car stopped, and i Thought it was out off gas, so i Put gas in it and thefuel pump will not work.

    1999 Mercury Grand Marquis 4 Dr GS Sedan


    Maintenance & Repair

  • Why does by 1999 Grand marquis not start sometimes? 11 answers

    It has happened to me twice now, after driving in town going shopping at at a few places. Each time I had it towed to the dealer and they couldnot find anything wrong with it. It would start every t...

    1999 Mercury Grand Marquis 4 Dr LS Sedan


    Maintenance & Repair

  • 1997 grand Marquis sensor 1 answer

    so my car been acting funny like it does get any gas so I got the check engine line check and it said oxygen sensor so I let it set ... and I went to check it again and it throttle position sensor ...

    1997 Mercury Grand Marquis 4 Dr LS Sedan


    Maintenance & Repair

  • My car cuts off sometime and act like it don't want to take the gas. I have a 2001 Grand Marquis. 2 answers

    When i start car it cuts off sometime and want stay started. I act like it's not getting the gas.

    Mercury Marquis


    Maintenance & Repair

Grand Marquis

Looking for a Used Grand Marquis in your area?

CarGurus has 2,551 nationwide Grand Marquis listings starting at $1,300.


Search Mercury Grand Marquis Questions

Mercury Grand Marquis Experts

#1 Tracy Hooks
Tracy Hooks
Reputation 4,820
#2 kbro
Reputation 1,910
#3 Js08016
Reputation 1,440
View All

Related Models For Sale

Used Ford Crown Victoria"
11 Great Deals out of 1,634 listings starting at $1,950
Used Lincoln Town Car"
56 Great Deals out of 2,377 listings starting at $1,542
Used Dodge Charger"
656 Great Deals out of 29,890 listings starting at $1,995
Used Cadillac DeVille"
2,394 listings starting at $1,000
Used Ford F-150"
3,219 Great Deals out of 216,434 listings starting at $1,900
Used Honda Accord"
1,344 Great Deals out of 77,641 listings starting at $1,395
Used Ford Taurus"
374 Great Deals out of 23,071 listings starting at $1,400
Used Ford Mustang"
737 Great Deals out of 41,260 listings starting at $900
Used Buick LeSabre"
16 Great Deals out of 2,571 listings starting at $1,700
Used Toyota Camry"
1,666 Great Deals out of 98,110 listings starting at $895

Used Cars For Sale

2011 Mercury Grand Marquis For Sale
4 Great Deals out of 45 listings starting at $4,995
2010 Mercury Grand Marquis For Sale
8 Great Deals out of 123 listings starting at $3,299
2009 Mercury Grand Marquis For Sale
4 Great Deals out of 130 listings starting at $2,995
2008 Mercury Grand Marquis For Sale
6 Great Deals out of 200 listings starting at $2,500
2007 Mercury Grand Marquis For Sale
11 Great Deals out of 205 listings starting at $1,993