r6_chu 0 Posted July 30, 2010 Report Share Posted July 30, 2010 Hiya Guys…Need some help please!Took my car to the garage yesterday to have the oxygen sensor changed as the engine light was on and they diagnose was the driver side sensor and the guy at the garage told me that the oxygen sensor is not important and does nothing for the car, and if I get it changed it’s best if I do both sensor as it’s a twin one! Is he right? I’m about to have a Milltek exhaust put on and have car re mapped… and I have spoken to my brothers who drives skyline’s & Evo’s and they told me that I will need oxygen sensor change as this will help the ECU know how much oxygen is going into the car… could someone please verify? Thanks V.x Link to post Share on other sites
craggsy 91 Posted July 30, 2010 Report Share Posted July 30, 2010 Take the car away from that monkey of a mechanic!!!Lambda is deffo needed as your brothers have said Link to post Share on other sites
r6_chu 0 Posted July 30, 2010 Author Report Share Posted July 30, 2010 Thanks craggsy... Link to post Share on other sites
Rayhoop 0 Posted July 30, 2010 Report Share Posted July 30, 2010 yup, the lambda/o2 sensor tells the ECU whether the air/fuel mix is correct. Link to post Share on other sites
UnitedMotorsport 55 Posted July 30, 2010 Report Share Posted July 30, 2010 HahaBoth parties are right hereThe oxygen sensor isnt NEEDED to make your car run. If the sensor is sufficiently damaged that the information that it is giving to the ECU is massively incorrect, then inplug it, and the ECU will do the rest. Having said that, the ECU should negate what it is seeing anyway However, on the later cars the oygen sensor is an important part to getting the car to run SPOT ON.Also an oxygen sensor doesnt sence how much oxygen the engine is consuming. It measures oxygen content of the exhaust gas, which in turn the ECU uses to work out fuel injection calculations.I presume that you have a 6 cylinder MK4 Golf? These cars have 4 oxygen sensors, and work in pairs.Find out which of the sensors is knackered, and have it changed when your new exhaust is fitted. Link to post Share on other sites
bungy 2 Posted July 30, 2010 Report Share Posted July 30, 2010 You learn something every day, cheers Matt. Link to post Share on other sites
r6_chu 0 Posted August 4, 2010 Author Report Share Posted August 4, 2010 Thanks guys for all your replies...Anyone know where i could get sensors from at a good price? x Link to post Share on other sites
Nex 17 Posted August 4, 2010 Report Share Posted August 4, 2010 I got mine from this guy, from what l remember the service was really good.http://www.autobits.co.uk/store/store.php Link to post Share on other sites
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