Question about 2000 Hyundai Sonata
Got a Check Engine Code: P1520 Manf Cntrl Veh Spd Idle Speed Control and would like to replace the Idle Air Control Valve myself...can you provide shop manual information for replacing?
No such code: P1520
Posted on Sep 23, 2009
You might just need to clean the IAC valve and throttle body. Try autozone for a free repair guide. You might need to buy a set of socket driver bits if it's held on with anti tamper screws.
Posted on Sep 11, 2009
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Posted on Jan 02, 2017
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Dec 04, 2013 | Chevrolet Cars & Trucks
Engine stalls cold or RPM
fluctuates at idle up and down or dies near idle.
This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve but always run a OBD2 (or OBD1) fault code as well as the cleaning procedure. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control. If the above cleaning doesn't cure your issues you need to have the computer controlled automatic idle speed control system diagnosed and repaired by a dealer or electronic engine control repair shop.
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