I own a 2001 Saturn SL1.
The problem I am having is a missfire on CYL#4, or so the computer code tells me.
I replaced the Spark plugs and plug wires and I still have the problem.
The missfire often turns on the engine light and is only felt at idle.
I have a few more ideas on what to check but I wanted some expert advice before I went much further.
Also, if it helps the fuel filter has never been changed
and neither have the O2 sensors.
have the same problem?
Saturday, January 6th, 2007 AT 1:32 AM