On the 2.7L V6 and 2.4L 4 Cylinder, a defective exhaust gas recirculation (EGR) switching valve may cause an intermittent rough or unstable idle engine.
Resources for the Repair and Maintenance of your 1999 Hyundai Sonata
1999 Hyundai Sonata
1999 Hyundai Sonata Problems
Concerned about safety, the NHTSA is investigating reports of rust forming at the front suspension mounting points, the frame, and the sub-frame. Some of these vehicles may have been recalled for this issue. For more information, please click here»
If the automatic transmission does not shift properly and the Check Engine Light illuminates, the speed sensors in the transmission may have failed. The sensors are simple and inexpensive to replace.
Premature timing belt failure may result in serious engine damage. When replacing a broken timing belt, it is important to inspect and possibly replace the crankshaft position sensor; it is often damaged when the timing belt breaks.
1999 Hyundai Sonata Recalls (Recent)
Summary: VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE SUPPLEMENTAL RESTRAINT SYSTEM (SRS) AIR BAG WARNING LIGHT COULD ILLUMINATE DUE TO MOTION OF THE SIDE IMPACT AIR BAG WIRING HARNESS AND SIDE IMPACT AIR BAG WIRING HARNESS CONNECTOR THAT MOUNT TO THE ADJUSTABLE SEAT CUSHION ASSEMBLY. THIS CONDITION ONLY RELATES TO THE DRIVER AND/OR PASSENGER SEAT-MOUNTED SIDE IMPACT AIR BAG(S).Learn more »
Summary: ON CERTAIN PASSENGER VEHICLES, AN INTERMITTENT CONDITION THAT LEADS TO THE SUPPLEMENTAL RESTRAINT SYSTEM (SRS) AIR BAG WARNING LIGHT ILLUMINATION COULD RESULT FROM MOTION OF THE SIDE IMPACT AIR BAG WIRING HARNESS AND SIDE IMPACT AIR BAG WIRING HARNESS CONNECTOR WHICH MOUNT TO THE ADJUSTABLE SEAT CUSHION ASSEMBLY. THIS CONDITION ONLY RELATES TO THE SIDE IMPACT AIR BAGS AND COULD PREVENT AIR BAG DEPLOYMENT DURING A CRASH WHERE SUCH DEPLOYMENT SHOULD OCCUR.Learn more »
Summary: HYUNDAI IS RECALLING 188,282 MY 2001-2004 SONATA AND MY 2001-2004 XG300 AND XG350 VEHICLES ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WEST VIRGINIA, WISCONSIN, AND THE DISTRICT OF COLUMBIA. ROAD SALT APPLIED IN THESE JURISDICTIONS DURING THE WINTER MONTHS MAY RESULT IN PROGRESSIVE, INTERNAL CORROSION OF THE FRONT SUB-FRAME ON THE VEHICLES, AND MAY RESULT IN THINNING OR PERFORATION OF THE SUB-FRAME STEEL. THE CORROSION IS FREQUENTLY VISIBLE AND OFTEN DISCOVERED DURING INSPECTION OR ROUTINE MAINTENANCE, AND OWNERS MAY ALSO HEAR NOISES OR NOTICE TIRE MISALIGNMENT AND STEERING PULL. IF THESE SIGNALS ARE UNDETECTED OR UNHEEDED, THE CORROSION MAY PROGRESS AND THE FORWARD MOUNTING OF THE LOWER CONTROL ARM MAY DETACH FROM THE SUB-FRAME.Learn more »
Summary: VEHICLE DESCRIPTION: SOME SONATA VEHICLES EQUIPPED WITH 2.5 LITER V-6 ENGINES AND ALL ELANTRA MODEL VEHICLES MAY HAVE EXPERIENCED INTERMITTENT LOW-SPEED ENGINE STALLING, WHICH COULD OCCUR IF THE MAF (MASS AIR FLOW) SENSOR ELECTRICAL SIGNAL IS INTERRUPTED AS A RESULT OF ENGINE VIBRATION TRANSMITTED TO THE MAF SENSOR CONNECTOR WIRING HARNESS.Learn more »
1999 Hyundai Sonata Questions and Answers
can everyone tell me where is fan blower motor resistor located and approx how much, thanks
How do I get a diagram explaining relay location on the passenger compartment junction block
Our 1999 sonata's wiper mechanism is snapped at the rh mounting. Will a 94 wiper mechanism and motor fit it.
The window washer motor will not go on to put out the water, all the easy things have been done, fluid fine, fuse good, power to motor fine, motor good. Could it be the button that you push or coul...