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rpmdiag, Tech and Instructor
Category: Lincoln
Satisfied Customers: 8068
Experience:  Since 1975
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2003 Lincoln Towncar: Rough engine idle at start up,

Customer Question

2003 Lincoln Towncar: Rough engine idle at start up, sometimes it corrects itself; lately it continues to run rough as though a sparkplug was not firing
Submitted: 1 year ago.
Category: Lincoln
Expert:  rpmdiag replied 1 year ago.

You may need to attach a scan tool to the computer system so we can check for codes and data from the computer such as fuel trims and MODE 6.

Thanks, Ron