my 1979 cougar won't stay running until it gets warm or hot

Asked by Jun 06, 2014 at 12:20 AM about the 1979 Mercury Cougar

Question type: Maintenance & Repair

I had the carb rebuilt it was running finee until the other day  . now it won't run or idol until
it get hot  or to the O in normal on the temp gauge

2 Answers

94,965

Sounds like your carb job went bad, possibly a small piece of varnish that didn't get cleaned out properly found it's way into an idle port.

10

Sounds like the Motorcraft Electronic automatic choke pull-off is stuck shut. You may notice black exhaust if you try to give it gas before it stall out. The choke plate stays shut and starves the engine of air, then the shutdown. Take it off clean the choke assembly, make sure there is current to the wire on the choke assembly, often these wires break inside the insulation. Once cleaned and powered adjust the choke bode till the engine idles as you want it to. Also adjust the fast idle kickoff at this time, or you'll have a roaring too eager engine in park. Hope this helps.

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

  • my 1979 cougar won't stay running until it gets warm or hot 2 answers

    I had the carb rebuilt it was running finee until the other day . now it won't run or idol until it get hot or to the O in normal on the temp gauge

    1979 Mercury Cougar

    -

    Maintenance & Repair

  • When car gets warm it won't move

    I have a 2001 mercury cougar 2dr v-6 hatch back it will start and drive but when it gets warm it won't move, Could it be a filter or valve.......any ideas?

    2001 Mercury Cougar 2 Dr V6 Hatchback

    -

    Maintenance & Repair

  • Why won't my car stay running when it is cold? 1 answer

    I have a 2000 cougar, v6, 2dr coupe as well. It also misfires, rpm fluctuates when idling, and stalls. It only does this when it has been very cold out for about 2+ days. It has been going on for 3...

    2000 Mercury Cougar 2 Dr V6 Hatchback

    -

    Maintenance & Repair

  • 02 Mercury Cougar 1 answer

    I have an 02 Mercury Cougar 3.8L. it runs fine until transmission gets hot (app 5 mins or so) then it don't want to pull. Once it cold it's the same process over again.. Any ideas?

    2002 Mercury Cougar 2 Dr V6 Hatchback

    -

    Maintenance & Repair

  • My mercury cougar will not start or turn over 7 answers

    My cougar will not start. When I put the key in all the lights and everything comes on like normal but when I try to crank it, it doesn't even turn over. I had it put on a computer & they said to ge...

    1999 Mercury Cougar

    -

    Maintenance & Repair

Search Mercury Cougar Questions

Mercury Cougar Experts

#1 lisagayle
lisagayle
Reputation 2,200
#2 Tom Demyan
Tom Demyan
Reputation 750
#3 Jessica Cornelison
Jessica Cornelison
Reputation 600
View All

Related Models For Sale

Used Ford Mustang
543 Great Deals out of 45,845 listings starting at $1,999
Used Chevrolet Corvette
149 Great Deals out of 20,684 listings starting at $3,995
Used Ford Thunderbird
19 Great Deals out of 1,072 listings starting at $5,991
Used Chevrolet Camaro
244 Great Deals out of 31,194 listings starting at $369
Used Dodge Challenger
211 Great Deals out of 23,433 listings starting at $7,990
Used Dodge Charger
454 Great Deals out of 29,324 listings starting at $2,300
Used Chevrolet Impala
590 Great Deals out of 34,064 listings starting at $899
Used Ford F-150
2,058 Great Deals out of 207,340 listings starting at $1,499
Used Chevrolet Malibu
1,060 Great Deals out of 77,908 listings starting at $1,500

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.