1999 Hyundai Sonata Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1999 Hyundai Sonata

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1999 Hyundai Sonata Problems

Rough Idle Due to Faulty EGR Switching Valve

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.

Check Engine Light and Transmission Won't Shift Correctly

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.

Rust May Form at Front Suspension Mounting Points

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»

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1999 Hyundai Sonata Questions

Where is the shift solenoids? (1 answer)

I had it checked by a shop that yes my solenoid is bad and needs to be replaced, so I'm gonna replace them all, but where are they? Is it difficult to get to? I can't find anything online to show if it's a simple fix or not

Failed smog. Told needed to do a drive cycle. Unable to find correct one. (1 answer)

tried 2 different ones. Did not work. Any suggestions? Catalyst & 02 sensor not ready. Should I unplug the ECU as mentioned to someone else?

I need to change the control module-resistor where is it located. (1 answer)

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1999 Hyundai Sonata Recalls

Recall 09V124000
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...
Recall 02V105000
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 ...
Recall 01V347000
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 O...

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