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HOMESERVICE MANUALSHYUNDAI1999ELANTRA WAGON L4-2.0LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSOXYGEN SENSOR LOCATIONS
1999 Hyundai Elantra Wagon L4-2.0L
Oxygen Sensor Locations
1999 Hyundai Elantra Wagon L4-2.0LSECTION Oxygen Sensor Locations
Group: FUEL SYSTEM
Number: 99-30-001
Date: JANUARY, 1999
Model: 1996-99 ACCENT, 1996-99 ELANTRA & ALL TIBURON
Subject: OXYGEN SENSOR LOCATIONS
DESCRIPTION:
This bulletin provides oxygen sensor locations for 1996-99 Accent, 1996-99 Elantra and all Tiburon models.
1996-99 ACCENT OXYGEN SENSOR LOCATIONS:
All 1996-99 Accents are fitted with two oxygen sensors. For 1996 and 1997 Accents, the location of the oxygen sensors are different between Federal specification vehicles and California specification vehicles.
On the 1996-97 Federal specification Accent, the upstream (front) oxygen sensor is located in the front exhaust pipe before the catalytic converter. The downstream (rear) sensor is located in the center exhaust pipe after the catalytic converter.
NOTE: All 1996 Accent GT DOHC (California and Federal specifications) oxygen sensor locations are similar to the Federal SOHC vehicles.
On the 1996-99 California specification Accent, the upstream (front) sensor is located in the exhaust manifold before the manifold catalytic converter (MCC). The downstream (rear) sensor is located in the front exhaust pipe after the MCC and before the catalytic converter.
NOTE: On the 1998-99 Federal specification Accent, the oxygen sensor locations match those found on the 1996-99 California specification vehicles.
1996-97 ELANTRA. 1997 TIBURON 1.8L OXYGEN SENSOR LOCATIONS:
The location of the oxygen sensors are identical for Federal and California specification vehicles.
The upstream (front) oxygen sensor is located in the front exhaust pipe before the catalytic converter. The downstream (rear) oxygen sensor is located in the center exhaust pipe after the catalytic converter.
1998-99 ELANTRA. 1997-99 TIBURON 2.OL OXYGEN SENSOR LOCATIONS:
The location of the oxygen sensors are different from previous models.
PHOTO 1
The upstream (front) oxygen sensor is located just below the exhaust manifold flange (see Photo 1), before the catalytic converter.
PHOTO 2
The downstream (rear) oxygen sensor is located in the intermediate pipe just before the flexible pipe section (Photo 2).
Number: 99-30-001
Date: JANUARY, 1999
Model: 1996-99 ACCENT, 1996-99 ELANTRA & ALL TIBURON
Subject: OXYGEN SENSOR LOCATIONS
DESCRIPTION:
This bulletin provides oxygen sensor locations for 1996-99 Accent, 1996-99 Elantra and all Tiburon models.
1996-99 ACCENT OXYGEN SENSOR LOCATIONS:
All 1996-99 Accents are fitted with two oxygen sensors. For 1996 and 1997 Accents, the location of the oxygen sensors are different between Federal specification vehicles and California specification vehicles.
On the 1996-97 Federal specification Accent, the upstream (front) oxygen sensor is located in the front exhaust pipe before the catalytic converter. The downstream (rear) sensor is located in the center exhaust pipe after the catalytic converter.
NOTE: All 1996 Accent GT DOHC (California and Federal specifications) oxygen sensor locations are similar to the Federal SOHC vehicles.
On the 1996-99 California specification Accent, the upstream (front) sensor is located in the exhaust manifold before the manifold catalytic converter (MCC). The downstream (rear) sensor is located in the front exhaust pipe after the MCC and before the catalytic converter.
NOTE: On the 1998-99 Federal specification Accent, the oxygen sensor locations match those found on the 1996-99 California specification vehicles.
1996-97 ELANTRA. 1997 TIBURON 1.8L OXYGEN SENSOR LOCATIONS:
The location of the oxygen sensors are identical for Federal and California specification vehicles.
The upstream (front) oxygen sensor is located in the front exhaust pipe before the catalytic converter. The downstream (rear) oxygen sensor is located in the center exhaust pipe after the catalytic converter.
1998-99 ELANTRA. 1997-99 TIBURON 2.OL OXYGEN SENSOR LOCATIONS:
The location of the oxygen sensors are different from previous models.
PHOTO 1
The upstream (front) oxygen sensor is located just below the exhaust manifold flange (see Photo 1), before the catalytic converter.
PHOTO 2
The downstream (rear) oxygen sensor is located in the intermediate pipe just before the flexible pipe section (Photo 2).
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.