Help Needed

[w3bb0]

hi all new here in need of some help ive always wanted a mr2 so i went and bought 1 to do up took it for a mot it failed on co emissions took it to my mams husband he serviced it for me took it for retest failed again they told me it hasnt got a cat or a Lambda sensor they said it could be the coolent sensor or the 1 that goes into air filer changed both of them still the same readings on co test any ideas or what it could be thx in advance

[JappyBeast]

Cat shouldnt maje a difference on this year of model, mine has passed many MOT's with no CAT.

[w3bb0]

Cat shouldnt maje a difference on this year of model, mine has passed many MOT's with no CAT.

it hasnt got a cat on it but co level is over 8. just wanted to know what could cause that

[mister_mo]

check o2 sensor, it needs to be there even if you don't have a cat the eng management relies on it.

check for error codes you never know what might be stored.

Mo

[w3bb0]

thx for the reply were abouts will i find the o2 sensor ? thx in adavnce

[JappyBeast]

If I'm reading right the O2 sensor feeds into the exhaust, when I got mine de catted they just tied it up and no light on the zorst.

[McLovin]

If I'm reading right the O2 sensor feeds into the exhaust, when I got mine de catted they just tied it up and no light on the zorst.

er if a garage did that then they need to be shut down, it will have been the cat temp sensor they tied up.

The lambda sensor is located on the b-pipe/flexi neas the sub frame, and is held on by 2 bolts

the symptoms you are having is classic lambda failure

[w3bb0]

If I'm reading right the O2 sensor feeds into the exhaust, when I got mine de catted they just tied it up and no light on the zorst.

er if a garage did that then they need to be shut down, it will have been the cat temp sensor they tied up.

The lambda sensor is located on the b-pipe/flexi neas the sub frame, and is held on by 2 bolts

the symptoms you are having is classic lambda failure

it hasnt got a cat its never had 1 taking it to another garage 2morow to be put on a diagnostics machine 2 c whats what

[McLovin]

If I'm reading right the O2 sensor feeds into the exhaust, when I got mine de catted they just tied it up and no light on the zorst.

er if a garage did that then they need to be shut down, it will have been the cat temp sensor they tied up.

The lambda sensor is located on the b-pipe/flexi neas the sub frame, and is held on by 2 bolts

the symptoms you are having is classic lambda failure

it hasnt got a cat its never had 1 taking it to another garage 2morow to be put on a diagnostics machine 2 c whats what

yeah not all of them have cats, but it sounds like lambda failure, no real diagnostics machine, its all simply done by codes by shorting 2 ports and reading the dash lights, you could do this yourself and save ££

[JappyBeast]

If I'm reading right the O2 sensor feeds into the exhaust, when I got mine de catted they just tied it up and no light on the zorst.

er if a garage did that then they need to be shut down, it will have been the cat temp sensor they tied up.

The lambda sensor is located on the b-pipe/flexi neas the sub frame, and is held on by 2 bolts

the symptoms you are having is classic lambda failure

I remember the guy at the garage was worried it was the lambda sensor when he fitted my exhaust, like I said I was only aware of one sensor that went into the exhaust and he just tied it up. I was worried I was gonna get a dash light!

[McLovin]

find a new exhaust place ;) they were messing with stuff they dont know about.

the sensor they will have removed is the cat temp, if they had tied the lambda then its not a good idea