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

100,295

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

Mercury Cougar Experts

  • #1
    lisagayle
    Reputation
    2,200
  • #2
    Tom Demyan
    Reputation
    790
  • #3
    Jessica Cornelison
    Reputation
    600
View All

Related Models For Sale

Used Ford Mustang
717 Great Deals out of 38,357 listings starting at $895
Used Ford Thunderbird
15 Great Deals out of 1,078 listings starting at $6,950
Used Dodge Challenger
292 Great Deals out of 22,015 listings starting at $6,999
Used Dodge Charger
422 Great Deals out of 27,491 listings starting at $2,495
Used Chevrolet Corvette
290 Great Deals out of 20,687 listings starting at $2,990
Used Chevrolet Camaro
397 Great Deals out of 30,558 listings starting at $3,550
Used Pontiac Firebird
10 Great Deals out of 780 listings starting at $2,500
Used Chevrolet Impala
504 Great Deals out of 33,648 listings starting at $950
Used Chrysler 300
319 Great Deals out of 17,604 listings starting at $1,000
Used Pontiac Grand Prix
28 Great Deals out of 2,719 listings starting at $795

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.