iddling on 2002 Ford Mustang

When I turn the car on it iddles above 1 rpm ifor about 2. Minutes and then it goes to normal is that normal or is something wrong

by in Phoenix, AZ on September 24, 2010
2 answers 2 comments
ANSWER by on September 24, 2010
It could be normal, as the engine will rev higher warming up. However, you could have a vacuum leak, an unmetered air leak (air tube, air box), sticking idle air control valve also. Two minutes DOES seem a bit long for a 2002. Do you have any modifications on the car? This could affect strategy too (such as modified air intake...etc...)
COMMENT by on September 25, 2010
It does have an exhaust leak and head gasket valve is leaking oil
COMMENT by on September 25, 2010
Exhaust leaks at the exhaust manifold can cause issues, but if you're talking muffler/tailpipe, probably not. The head gasket / valve cover leaking oil cannot cause idle issues. Like Pvt-Public stated - it indeed isn't terribly a big deal at 1000 - 1200 RPM for a short time, but higher is definitely abnormal.
ANSWER by on September 25, 2010
That's not 1 it is 1000 Rpm. How much above 1000? 1100, 1200 I would say no big deal, but if it is up at 1800 1900 you need to look at the cold idle circuit.