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2002 Nissan Altima Base 4dr Sedan Manual

2002 Nissan Altima
Trim Info:
Front Wheel Drive, 4 Door Sedan, Compact
23 mpg city / 29 mpg hwy
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February 6, 2013, 7:34 am

Robert R

Question: Rough idle on cold start

I've noticed on some cold mornings I'll start my 02 Altima (starts right away) and it will idle roughly like it's misfiring (SES light blinks). It eventually smooths out when warmed up. Everything I'm reading seems to indicate a failing head gasket, but I'm not seeing any of the other signs (i.e. coolant loss, "milky" looking oil, coolant on cylinder heads, etc.). What else could it be?

February 17, 2013, 11:34 pm

Richard W
Expert Mechanic

You could have a leaking injector. Or it's time for a tune up. With a scan tool it will tell you which cylinder you are having trouble with. So I would get a scan tool or have a shop look at it.

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