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

105,295

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
    810
  • #3
    Jessica Cornelison
    Reputation
    610
View All

Related Models For Sale

Used Ford Mustang
597 Great Deals out of 38,611 listings starting at $1,895
Used Ford Thunderbird
20 Great Deals out of 1,049 listings starting at $6,800
Used Dodge Challenger
229 Great Deals out of 24,821 listings starting at $7,750
Used Chevrolet Camaro
438 Great Deals out of 31,256 listings starting at $1,450
Used Chevrolet Corvette
164 Great Deals out of 17,423 listings starting at $3,000
Used Dodge Charger
444 Great Deals out of 32,879 listings starting at $1,999
Used Pontiac Firebird
9 Great Deals out of 759 listings starting at $3,500
Used Ford F-150
3,135 Great Deals out of 219,096 listings starting at $1,200
Used Chevrolet Monte Carlo
11 Great Deals out of 1,252 listings starting at $1,488
Used Ford Crown Victoria
4 Great Deals out of 963 listings starting at $1,496
Used Mercury Capri
26 listings

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.