2006 Hyundai Sonata "idles rough" Questions

My son has a 2004 Hyundai Tiburon that is hard to start and has a rough idle. Anyone know what would be wrong with it? Hard to start and rough idle how long has it been since it was tuned up, have the

2001 hyundai sonata running rough i have had problems with my 01 sonata not wanting to stay started in the cold mornings and then it just started running very rough any time of the day. we changed the

...rough and around 700-1200(a/c) rpm idle but there's a tick in it. i dc the egr valve, and seal the vac sys, and the car idles high but smooth. I can lower idle and runs great but gas mileage ...

RUNS ROUGH WHEN COLD AND FINE AFTER THE MOTOR WARM UPS YOU HAVE A THERMO SENSOR ON THE THERMOSTAT HOUSING WITH TWO VACUUM PIPES IF NOT CONNECTED ROUGH IDLING WILL APPEAR WHEN COLD CHEK OTHER END ...

what does the check engine code p1520 - manufactures control, vehicle speed idle speed control auxillary input. the car has been idling very rough and lacks power. P1520Generator FR Terminal ...

Engine runs rough after replacing heads. I just put the heads back on a 2003 Hyundai Sonata 2.7 and it runs rough, spits and sputters. It will idle for a short time. But to keep it running I have to ...

ENGINE WANT'S TO DIE WHEN YOU ACCELARATE FROM A STOP SIGN OR A STOP Here is the most common cause of surges and stalls at stops and low erratic idle speed and rough idle, it is the idle speed control ...

...idles very rough and eratic. Has good power but pings. Surges and stutters at 100kph. I have fitted new timing belt ( all marks are matched perfectly) Fitted a new water pump. New leads and spark ...

idles rough after replacing battery replaced battery - engine runs rough - engine warning light comes on I do not believe the two are closely related but try disconnecting the battery and reconnecting

My 2006 Sonata is idly roughly...the mechanic cleaned the throttle, belt is ok, and spark plugs are ok. What could be causing this? Sorry to read about you issue with rough idle.... The only advice I ...