got a 2002 mercury cougar with 60,000 miles and got a code po305 "misfire on 5" how do I fix

Asked by Jul 17, 2016 at 01:45 PM about the 2002 Mercury Cougar 2 Dr V6 Hatchback

Question type: Maintenance & Repair

2 Answers

93,095

Well you have an 02 with only 60K on it so the first thing I would recommend is to have the injectors professionally cleaned and the plugs replaced, 14 years on the same set of plugs just can't be good, and varnish is a real problem when a car sets that much. After you get everything cleaned out and running properly again, put some fuel stabilizer in it when you know it is going to be setting. I use Sta-Bil marine in my rigs when they are going to be setting for a while, and so far no problems.

46,415

Change the plugs and the plug wires.

Your Answer

Add photo

Related Questions

  • 2000 Cougar transmission problem? 39 answers

    I have a 2000 Cougar V6. Recently I would notice some serious jerking when I would get on the highway and hit about 65 mph. Then I noticed it would do it on city roads occasionally as well. Now i...

    2000 Mercury Cougar 2 Dr V6 Hatchback

    -

    Maintenance & Repair

  • 2002 Cougar No Reverse When Warm 5 answers

    Last night, I bought a 2002 Cougar with 97K miles. It ran fine when I test drove. Transmission seemed to work perfectly. We purchased it, drove it down to the gas station 2 miles away and filled it u...

    2002 Mercury Cougar 2 Dr V6 Hatchback

    -

    Maintenance & Repair

  • I have a 1995 Mercury Cougar with 83,000. miles on it and they can't get the check engine light to stay out? 2 answers

    The check engine light won't stay out. The ERG solenoid has been change, they put in a new EGR hose set, nothing is plugged up, they clean out everything and it still comes on. They said it could be...

    1995 Mercury Cougar

    -

    Maintenance & Repair

  • Timing chain broke on my 2001 mercury cougar 24 answers

    I was driving about 30 mph when the timing chain broke. Will that ruin the engine in my 2001 Mercury Cougar V6 DOHC or can just the chain be replaced? I was told by a repair shop it is an interferen...

    2001 Mercury Cougar 2 Dr V6 Hatchback

    -

    Maintenance & Repair

  • I have a 1975 Mercury Cougar XR7 with Landau top. 23 answers

    Has been parked on street since then. She put putted around in it for 37 years to and from the grocery store. Has vinyl 1/2 top and leather seats. WAS mint. Now paint isn't great anymore. Point...

    1975 Mercury Cougar

    -

    Shopping & Pricing

Search Mercury Cougar Questions

Mercury Cougar Experts

#1 lisagayle
lisagayle
Reputation 2,200
#2 Tom Demyan
Tom Demyan
Reputation 740
#3 Jessica Cornelison
Jessica Cornelison
Reputation 600
View All

Related Models For Sale

Used Ford Mustang
474 Great Deals out of 45,735 listings starting at $1,999
Used Chevrolet Camaro
226 Great Deals out of 30,943 listings starting at $1,217
Used Mercury Grand Marquis
31 Great Deals out of 1,804 listings starting at $2,250
Used Chevrolet Corvette
120 Great Deals out of 20,753 listings starting at $3,000
Used Ford Thunderbird
20 Great Deals out of 1,077 listings starting at $6,499
Used Ford F-150
2,198 Great Deals out of 206,316 listings starting at $1,499
Used Chevrolet Impala
521 Great Deals out of 31,726 listings starting at $1,450
Used Honda Civic
656 Great Deals out of 88,604 listings starting at $995
Used Pontiac Firebird
12 Great Deals out of 724 listings starting at $3,990
Used Chevrolet Monte Carlo
21 Great Deals out of 1,408 listings starting at $1,995

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.