i just changed the spark plugs in my 92 cougar 3.8.I had to idle it up so it would stay running in drive.Now when I drive it for about 30 minutes or so.It seems to hesitate when I try to accelarate.What could be the problem?

10

Asked by Jul 13, 2016 at 02:06 PM about the 1992 Mercury Cougar 2 Dr LS Coupe

Question type: Maintenance & Repair

I've changed plugs,and air filter.Getting poor accelaration

8 Answers

12,665

Few possibilities scan it for DTC codes as a start. OBDII port

10

so changing the wires will help me with my idiling problem and bad acceleration?

1 of 1 people found this helpful.
19,180

Did you check the gap on the spark plugs before installing them ? I know that plugs are pre gapped to fit most vehicles they go to but sometimes they need to be gapped for certain vehicles.

1 of 1 people found this helpful.
5,565

yes...and make sure that the battery is newer than five and the battery cables are solidly connected to the motor and to the frame chassis....that will help things...as far as the idling solid spark is what is needed...perhaps renewing the ground with a fresh battery is the key here~

49,395

1992 Cougar with a 3.8 is NOT distributorless ignition. I would look at the distributor cap, rotor and sparkplug wires first. How many miles on this Cougar?

Best Answer
10

it's over 150.000 miles on it.Someone said it could be the fuel filter.I've never changed it.And I had the car over 10yrs.

49,395

If it were mine I would change plugs, wires, distributor cap, rotor and fuel filter. I am not saying this will solve your problem. The 3.8 engine also had many issues with head gaskets. I personally repaired bad head gaskets on a 1993 Cougar we owned many years ago. Keep us posted on what you find the problem to be.

1 of 1 people found this helpful.
10

i did have to repair the heads a couple yrs ago.I repaced the disrtibutor cap,rotor about 2 mnths ago.So I'll try the wires and the fuel filter.Thanks

Your Answer

Add photo

Related Questions

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
685 Great Deals out of 44,481 listings starting at $1,500
Used Ford Thunderbird
18 Great Deals out of 1,082 listings starting at $6,950
Used Chevrolet Camaro
373 Great Deals out of 31,231 listings starting at $2,500
Used Chevrolet Corvette
218 Great Deals out of 22,157 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
2,092 Great Deals out of 192,324 listings starting at $290
Used Toyota Camry
1,228 Great Deals out of 82,695 listings starting at $750
Used Honda Accord
1,051 Great Deals out of 66,931 listings starting at $1,000
Used Mercury Sable
4 Great Deals out of 917 listings starting at $3,850
Used Pontiac Grand Prix
25 Great Deals out of 2,827 listings starting at $1,850
Used Mercury Capri
25 listings
Used Buick Skylark
87 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.