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Discussion Starter #1
Hi
I have a
2005 Hyundai Tiburon
Model TIBU04A
V6 2.7LT
2/2005

My mechanic say i need 2 Oxygen sensors
he says

"There are 2 sensors needed. the PRE-cat & POST-cat for the Left Hand side
Your car is a 2/2005. There is the possibility that it could be a previous model sensor (cars on the change over cusp often have various parts used)"

so.....this ebay listing
says that this sensor will fit both Pre & Post Cat
but when I contacted the seller they said they would fit both but "please double check" so they don't seem 100% confident

would it be correct that both pre & post sensors are the same?
 

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Most cars have "upstream" sensors and "downstream" sensors.
Bank to bank usually makes no difference...pre vs. post CAT does make a difference.
Use RockAuto.com for a reference at a minimum....

Thus.....bank X sensor 1 is one part, bank X sensor 2 is a different part.

To sorta answer your question, pre/post CAT sensors are almost 100% always different....

A bit more work for you.....go to JimEllisHyundai.com....they are a car dealer.....look up your car, find part, compare to what is being offered....most aftermarket bits refer to a OEM PN.....
 

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Discussion Starter #3
Hi - just spoke to mechanic again - he assumed there were 2 sets of 02 sensors and saw one set wasn't responding on the computer so assumed one set was bad
when he looked further he realised there was only one set

so the mystery continues - I'll start another thread wit ha more relevant title like "fuel issues"

thanks for you help!
 

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There are 2 sets, upstream and downstream for each bank, so a total of 4 sensors. If he's only seeing one set (2 sensors) there's something wrong with his scanner.

As stated, use Rock Auto to at least check part numbers. These cars are particular with electrics though, so stick with OEM O2 sensors. NTK is the OEM supplier.
 

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Discussion Starter #5
he said he discovered there was only 1 set by physically looking for them

he also said
"Your car is a 2/2005. There is the possibility that it could be a previous model sensor (cars on the change over cusp often have various parts used)"
did the earlier version only have 2 sensors?
 

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We have a 2004 V6, it has 4 O2 sensors.
 

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Discussion Starter #7
Pardon my ignorance but what is difference between EOBD and NON-EOBD

I've found schematics and info at
Hyundai Tiburon PDF Workshop and Repair manuals | Carmanualshub.com

The Emission Control manual shows two drawings one for EOBD and NON-EOBD - it appears from drawings that the NON-EOBD only has one set of O2 sensors

I am located in Australia so for some reason my imported model may be different than the US model ??

any suggestions?
 

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US: OBDII
Europe: EOBD
Aus: idk.

there's sensors on the front bank and sensors on the rear banks near the firewall. take a look. is there a catalytic converter on each of the headers?
check for a sensor plugged in before the catalytic converter, and then also check for an o2 sensor plugged in below the catalytic converter. each bank will have the same o2 sensor setup. if there's no downstreams on one bank, there won't be any on the other bank.
 

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Discussion Starter #9
there is defiantely only one set of O2 sensors - they are none on the front manifold - there is only one cat converter and its at the beginning of the under car pipe
It appears my vehicle must be NON-EOBD
 
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