Often having rough idling and switch off

Asked by Guru89V2T Dec 23, 2019 at 12:26 AM about the 2004 Toyota Premio Sedan

Question type: Maintenance & Repair

I have a Toyota premio 2004.when the
engine is on for about 30 mins,it starts
having rough idling and at times has engine
check light.
It has been diagnosed but couldn't pick the
real problem.
Spark plugs checked,idle control checked,
injectors checked, exhaust checked,fuel
pump checked and replaced, airflow sensor
checked but still to no avail.what could be
the problem.engine 1NZ

1 Answer
40,150

TDolby answered 4 years ago

What are the 4 digit OBDii trouble codes that are being scanned? Once we know those we can suggest where to look next.

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