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How to fix a rough idle on a 1998 Volkswagen Jetta GLS with a 2.0L? (Like a miss)?

Tiny
KYLERYAN513
  • MEMBER
  • 1998 VOLKSWAGEN JETTA
  • 2.0L
  • 4 CYL
  • FWD
  • MANUAL
  • 171,000 MILES
It was running fine so I changed my spark plugs (because I felt like they haven't been changed in a while) then it became a super rough idle with a check engine light on (first it flashed and now it is just staying on). So I changed my spark plugs, spark plug wires, rotor, and distributor cap. It still runs super rough with a check engine light on. Any ideas? I'm thinking ignition coil? Anyway to be sure?
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Wednesday, December 31st, 2014 AT 8:36 PM

2 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
If this engine was running good before you did this, then you have to realize that it was caused by something you did. I would start by pulling the plugs back out and inspecting them very closely for ay hairline type cracks. Before doing anything have the codes in the computer read and they should point you to twhich cylinder is having the problem.
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Thursday, January 1st, 2015 AT 5:14 AM
Tiny
KYLERYAN513
  • MEMBER
  • 2 POSTS
Alright, that's what I thought and my father disagreed and said it could of threw something else off. I'ill try tomorrow, Thank You so much!
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Thursday, January 1st, 2015 AT 4:16 PM

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