i have a toyota avensis 2002 plate have replaced 2 ox sencers now the garage are saying the cats faulty help?

Question

they say i can`t buy a patern part and have to buy atoyota original at around £ 580 fitted is this right ?

its a 2.0 vvti cdx 4dr and the garage told me it was a 3way cat attached to the manifold. oxygen sensor bank1 sensor1 £ 216 and replaced another at £ 118the showed me a pic in the toyota parts book

Answer 1

Did you use the dodgy supermarket fuel a couple of weeks ago?? You can get pattern silencers for most models, search around the web.

Try here, dont know what engine you have!

https://www.leisureshack.co.uk/osb/showitem.cfm/Category/Avensis-2.0i--16V-8-10-97-_14788

Answer 2

The life expectancy of an OEM Catalytic Converter should be 100k miles or more. If the engine is running clean and properly adjusted, most cars can make 200K miles on and OEM CAT. If the CAT has already been replaced with an aftermarket CAT, you can expect a much shorter life. The low cost CAT manufacturers do not use as much catalytic material in their low cost aftermarket products with a final life expectancy of maybe only 25-50% of the OEM products. Check carefully, you may have another problem with your TOYOTA, like it is running too rich, or it has a misfire, or is somehow letting too much unburned gasoline into the CAT. The CAT must then complete the burning process and can overheat the CAT to the point of meltdown. Check for a restriction in the exhaust gas flow through the entire exhaust gas system.

Answer 3

First, tell me why you had to replace the o2 sensors, what was the trouble code from the computer scan, and are the sensors in the exhaust manifold before the catalytic convertors or one is front of it and one after it? Sometimes sensors are replaced without correcting the cause of failure..Before you replace the cat. convertor...tell me..are you having poor performance...engine seems to be wide open, but just not moving as fast as it should..one way to tell ...remove the convertor, and drive the car...if the performance is 100% better then replace it..If not..then you have other problems...

Answer 4

unfortunately so, normally if an oxygen sensor fails it damages the cat, the sensor detects the fuel air ratio travelling through the cat and if it is to rich it ask for more air to lean down the mixture to prolong the cats life, if the sensors fail then it can cause the cat to become damaged, its sounds like you need to replace your cat but shop around for prices because main dealers do charge very high labour rates but your cat will be around the £300-£400 mark

Answer 5

Could well be, faulty O2 sensors can "kill the cat". I'd shop around if I were you, if your garage is a Toyota one they're bound to use a Toyota part (and prices).

Answer 6

I had my Cat replaced on a VW passat at Selecta Tyre for £210.00 inc fitting & VAT.

Selecta Tyre are a national company and are a tyre and exhuast specialist

I got a quote from Quick Fit for £230 inc Fitting & Vat.

VW wanted to charge me £470.00