Car misfires and sputters

15

Asked by Jun 28, 2011 at 01:43 PM about the 1999 Mercury Cougar 2 Dr V6 Hatchback

Question type: Maintenance & Repair

Car misfires and sputters only when the car is cold and only when you're stepping lightly on the gas pedal, works fine on open throttle (runs fine when running at temperature). What could be the problem? Check engine light never comes on. I've changed spark plugs, wires, and fuel filter, cleaned the intake, oil & filter changed frequently. The car has had the stock air filter taken out & a short air intake installed (but ran fine with it).  Also, when you take off the short air intake pipe at the intake (pipe has the MAF sensor in the piping), it works exactly the same... would have thought that it wouldn't run right without the air running through the MAF sensor...

3 Answers

15

It is a 1999 Mercury Cougar V6

135

Tune up time

15

I wish that were the problem... it's had a complete tune up, except for coil pack.

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

  • Misfires, spudders, wants to die!!!!! 5 answers

    When it's cold outside car revs up and down, wants to die. When I'm over 2000 rpms it's fine. When I proceed to brake the car wants to die but still go and brake pedal feels like I'm pressing on ...

    2000 Mercury Cougar 2 Dr V6 Hatchback

    -

    Maintenance & Repair

  • Car won't start 2 answers

    My car won't stay running, I ave replaced fuel pump. And filter. I'm getting plenty of pressure out of the valve. It will start every once in awhile for six or seven times. When it does start it wi...

    1995 Mercury Cougar 2 Dr XR7 Coupe

    -

    Maintenance & Repair

  • my 2000 mercury cougar 4 cyl began knocking or tapping 2 answers

    was running fine drove 10 miles waited 2 hours and it began knocking of tapping sputtering poor performance idles rough. have changed plugs and wires checked fluids plugs and wires made no improvement

    2000 Mercury Cougar 2 Dr I4 Hatchback

    -

    Maintenance & Repair

  • Mercury Cougar Forum 2 answers

    I have a 2000 Cougar and just the other day I was driving and the battery light and oil light came on at the same time and the engine shut down. I don't think it is a battery, do any of you think it ...

    2000 Mercury Cougar 2 Dr V6 Hatchback

    -

    Maintenance & Repair

  • 2001 mercury cougar 2.5 can a rev limiter cause this? spits and sputters 1 answer

    in park you can rev it up to the rev limiter. go to drive it and it gos about 25 to 35 mph at 1500 rpm spitting and sputtering,there are no error codes. i have changed the plugs,wires,fuel filter,pc...

    2001 Mercury Cougar 2 Dr V6 Hatchback

    -

    General

Cougar

Looking for a Used Cougar in your area?

CarGurus has 207 nationwide Cougar listings and the tools to find you a great deal.

ZIP:

Search Mercury Cougar Questions

Mercury Cougar Experts

#1 lisagayle
lisagayle
Reputation 2,180
#2 Tom Demyan
Tom Demyan
Reputation 700
#3 Jessica Cornelison
Jessica Cornelison
Reputation 590
View All

Related Models For Sale

Used Ford Mustang
333 Great Deals out of 45,576 listings starting at $2,000
Used Mercury Grand Marquis
27 Great Deals out of 1,801 listings starting at $500
Used Chevrolet Camaro
136 Great Deals out of 35,100 listings starting at $1,995
Used Chevrolet Corvette
117 Great Deals out of 20,536 listings starting at $3,499
Used Pontiac Firebird
9 Great Deals out of 758 listings starting at $1,800
Used Chevrolet Impala
544 Great Deals out of 28,509 listings starting at $700
Used Chevrolet Monte Carlo
12 Great Deals out of 1,410 listings starting at $2,511
Used Lincoln Mark VIII
49 listings starting at $1,495
Used Pontiac Grand Prix
19 Great Deals out of 2,825 listings starting at $1,595