Misfires, spudders, wants to die!!!!!

Asked by Jan 08, 2015 at 11:09 AM about the 2000 Mercury Cougar 2 Dr V6 Hatchback

Question type: Maintenance & Repair

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 a brick. I've
changed coil pak, spark plugs and
wires, egr silenoid, egr valve, fuel
filter. Idk wht else it could be, when
it's warm outside cars does it also
but when motor is warmed at temp it
runs fine and brakes work fine, but
anything under 50 degrees outside
car runs like shit. It's the 2.5liter v6
motor

5 Answers

255

You might want to have your cooling thermostat checked, some cars, for example the 2005 V6 has a safety feature for when the car runs hot. It will alternate cycl causing that sputter to happen in order to help the engine cool by allowing more airflow in, and it can feels like it wants to die, but it is a built in safety feature.

255

My 2005 V6 mustang did this and it was a cracked thermostat.

Ok but wouldn't that make the motor over heat if the thermostat is bad

And I got a new thermostat about 2- 3 yrs ago when it started to over heat I changed that and come to find out it was the water pump belt.

75

Sounds like an O2 sensor.

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 misfires and sputters 3 answers

    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 probl...

    1999 Mercury Cougar 2 Dr V6 Hatchback

    -

    Maintenance & Repair

  • how hard is it to replace the thermostat on the 02 couger v6 1 answer

    My cougar is overheating on occasion, not all the time. Also I'm not getting any heat through my heater just cold air. I'm thinking thermostat because there are no visible leaks and the coolant level ...

    2002 Mercury Cougar 2 Dr V6 Hatchback

    -

    Maintenance & Repair

  • how to change a fuel pump on a 1999 mercury cugar 1 answer

    I have a 1999 mercury cugar and need to know how to change the fuel pump .

    1999 Mercury Cougar 2 Dr V6 Hatchback

    -

    Maintenance & Repair

  • In a 2000 murcery what would cause my car to lose power 1 answer

    The gadges are not working and some times won't allow me to start it

    2000 Mercury Cougar 2 Dr V6 Hatchback

    -

    Maintenance & Repair

Cougar

Looking for a Used Cougar in your area?

CarGurus has 220 nationwide Cougar listings and the tools to find you a great deal.

ZIP:

Search Mercury Cougar Questions

Mercury Cougar Experts

#1 lisagayle
lisagayle
Reputation 2,200
#2 Tom Demyan
Tom Demyan
Reputation 760
#3 Jessica Cornelison
Jessica Cornelison
Reputation 600
View All

Related Models For Sale

Used Ford Mustang
680 Great Deals out of 44,480 listings starting at $1,500
Used Chevrolet Camaro
370 Great Deals out of 31,228 listings starting at $2,500
Used Chevrolet Corvette
218 Great Deals out of 22,159 listings starting at $3,750
Used Mercury Grand Marquis
27 Great Deals out of 1,791 listings starting at $2,250
Used Pontiac Firebird
15 Great Deals out of 764 listings starting at $2,995
Used Ford F-150
2,091 Great Deals out of 192,324 listings starting at $290
Used Toyota Camry
1,225 Great Deals out of 82,703 listings starting at $750
Used Honda Accord
1,053 Great Deals out of 66,933 listings starting at $1,000
Used Pontiac Grand Prix
25 Great Deals out of 2,827 listings starting at $1,850
Used Mercury Sable
4 Great Deals out of 917 listings starting at $3,850

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.