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Saturn SL skipping. Sort of.

Tiny
KM4HR
  • MEMBER
  • SATURN
2002 Saturn SL1 1.9L makes a slight puffing noise at the tail pipe when idling. It does this continuosly. So far I've:

* installed new plugs and wires
* swapped ignition coils with other cylinders
* swapped fuel injectors in #1 and #2 cylinders
* checked computer codes
* checked compression (150 psi all cylinders)

Check engine light is on. Computer codes were checked at Advance Auto Parts. The printout said "skipping on #1 cylinder".

Skipping is not noticable on the highway. Why is it sputtering at idle? How do I stop it?
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Friday, May 11th, 2007 AT 10:48 PM

1 Reply

Tiny
SERVICE WRITER
  • MECHANIC
  • 9,123 POSTS
Check for a vaccuum leak. Pick up at the bottom of this thread on page 1:
https://www.2carpros.com/forum/1-vt29176.html?postdays=0&postorder=asc&start=0

You may want to do the chemical cleaning in that thread also.
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Friday, May 11th, 2007 AT 11:02 PM

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