Spark plugs

chevy__88 · 2016-07-31T16:25:39+00:00

Car was shaking really bad when stopped at a light. Check engine light comes on when I went over 50 mph and it started bucking real bad. But it stopped when I went about 40 mph. I have changed the spark plugs and it seems like it helped a lot. But I test drove it and everything seemed fine until I stopped at a sign and I felt a small buck. Maybe a misfire? Kind of hard to explain the feeling. But it was like a small blump blump. Could not hear it just felt it in the car? Do I need to change those rubber boot things?

2001 LINCOLN TOWN CAR

101,500 MILES • 4.6L • V8 • AUTOMATIC

SATURNTECH9

✓Experienced Mechanic
30,869 POSTS

Let us know how it goes.

Nov 5, 2016 at 10:02 AM

CHEVY__88

MEMBER
104 POSTS

Well it wasn't the oxygen sensors like the shop told me. They didn't even pull up the code for the misfires, so I bought a coil tester and tested my coils. 2 of them didn't spark so I replaced them and it seems to be running fine now. The light finally turned off

Nov 18, 2016 at 2:59 AM

SATURNTECH9

✓Experienced Mechanic
30,869 POSTS

I really doubt anyone of those parts were causing a misfire.but please keep us posted.

Nov 18, 2016 at 4:49 AM

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Engine won't start
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