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MOT Emmisions failure Rev3 Turbo!
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RandomDan




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PostPosted: Wed Jul 26, 2017 4:11 pm    Post subject: MOT Emmisions failure Rev3 Turbo! Reply with quote Reply with quote including images

Hello.

My OHs rev3 turbo has just failed its MOT on emmisions and iv been assured its the lambda sensor.
Where do i get this sensor from?
I can see the N/A ones around but im told they are differant.
My normal fall back would have been fensport but they dont stock much of anything for the turbo exhaust!

The Fail was on CO content at 0.58 natural idle and 0.49 fast idle.
The limit being 0.3.

Any help would be greatly apreciated!
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Gazza_DJ
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1997 Toyota MR2 Mk2 NA Rev4

PostPosted: Wed Jul 26, 2017 4:22 pm    Post subject: Reply with quote Reply with quote including images

NA is different, you're correct.

What you need is a Denso DOX-0217. Plug and play. Denso website will tell you 0215 but as my friend found out recently that's the US spec 4 wire sensor. Connector is different.

Sensor is ~60-70. Up to you to confirm it's definitely the right one, you can cross reference part numbers against Japan parts - http://www.japan-parts.eu/toyota/jp/1994/mr2/sw20-acmzz/4_211120_002_/electrical/8401_switch-relay-computer#89465
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robbie_742003
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1996 Toyota MR2 Mk2 Turbo Rev3

PostPosted: Thu Jul 27, 2017 9:39 am    Post subject: Reply with quote Reply with quote including images

Whereabouts are you Dan? I changed mine a while ago cos i thought it was knackered but i think i changed for nothing.
You could try it then give me beer tokens [Laughing]

Rob
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Race Idiot
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Joined: 25 Jan 2006
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1994 Toyota MR2 Mk2 Turbo Rev3

PostPosted: Thu Jul 27, 2017 10:15 am    Post subject: Reply with quote Reply with quote including images

Gazza_DJ wrote:
NA is different, you're correct.

What you need is a Denso DOX-0217. Plug and play. Denso website will tell you 0215 but as my friend found out recently that's the US spec 4 wire sensor. Connector is different.

Sensor is ~60-70. Up to you to confirm it's definitely the right one, you can cross reference part numbers against Japan parts - http://www.japan-parts.eu/toyota/jp/1994/mr2/sw20-acmzz/4_211120_002_/electrical/8401_switch-relay-computer#89465


Thats the correct one for a 205 GT4 according to Opie oils.

http://www.opieoils.co.uk/pv-135190-denso-direct-fit-lambda-sensor-dox-0217-oxygen-o2-genuine-oe-part-single.aspx

Not a bad price, I should probably replace mine as I get pretty xxxx mileage just cruising along the motorway in mine.
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Gazza_DJ
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1997 Toyota MR2 Mk2 NA Rev4

PostPosted: Thu Jul 27, 2017 10:19 am    Post subject: Reply with quote Reply with quote including images

Under 50 is very good. I need to buy some oil but already have a new sensor... I paid close to 60!
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pbmr2
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PostPosted: Thu Jul 27, 2017 12:52 pm    Post subject: Reply with quote Reply with quote including images

last fail on the mr2 I had was because of a small hole in the exhaust system around the back box. Quite a small hole but enough to fail the test on emmisions. The hole wasn't enough of a leak to fail for that. worth a close look before buying a sensor in the hope of fixing it.
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Gazza_DJ
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1997 Toyota MR2 Mk2 NA Rev4

PostPosted: Thu Jul 27, 2017 1:08 pm    Post subject: Reply with quote Reply with quote including images

Hard to tell without the full results but a backbox leak would not affect CO figures, it would affect the calculated lambda though. If there was a hole pre o2 sensor that would cause it to read lean and compensate by adding more fuel, which would increase CO.

O2 is simple enough to test with a multimeter though.
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Magic Beans
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1998 Toyota MR2 Mk2 Turbo Rev5

PostPosted: Thu Jul 27, 2017 3:17 pm    Post subject: Reply with quote Reply with quote including images

Or if you're happy to swap the connector yourself: http://www.ebay.co.uk/itm/1x-Denso-Lambda-Sensors-DOX-0101-DOX0101/361294625822?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

Just put one of these on mine; works perfectly.
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Gazza_DJ
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1997 Toyota MR2 Mk2 NA Rev4

PostPosted: Thu Jul 27, 2017 3:32 pm    Post subject: Reply with quote Reply with quote including images

For the sake of a tenner I'd rather have direct fit tbh!
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Magic Beans
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1998 Toyota MR2 Mk2 Turbo Rev5

PostPosted: Thu Jul 27, 2017 3:35 pm    Post subject: Reply with quote Reply with quote including images

I spent far too long trying to get a definite answer on which part no. to get. In the end I opted for the one I got and thankfully it worked. If I'd have known about that one I'd absolutely have spent the extra money.
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RandomDan




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PostPosted: Thu Jul 27, 2017 4:48 pm    Post subject: Reply with quote Reply with quote including images

robbie_742003 wrote:
Whereabouts are you Dan? I changed mine a while ago cos i thought it was knackered but i think i changed for nothing.
You could try it then give me beer tokens [Laughing]

Rob


Thanks for the offer but we have a new one on the way now.


xxxx know where all you guys found them though as the only one we could find was from MR2Ben at 85!
I know it expensive but you cant argue with the service and garanteeing to get the right one is worth it.
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danjama




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PostPosted: Sat Jul 29, 2017 1:54 pm    Post subject: Reply with quote Reply with quote including images

RandomDan wrote:
robbie_742003 wrote:
Whereabouts are you Dan? I changed mine a while ago cos i thought it was knackered but i think i changed for nothing.
You could try it then give me beer tokens [Laughing]

Rob


Thanks for the offer but we have a new one on the way now.


xxxx know where all you guys found them though as the only one we could find was from MR2Ben at 85!
I know it expensive but you cant argue with the service and garanteeing to get the right one is worth it.


But Gareth gave you a link to the exact one? What a waste of money...you can get the firect fit denso one on ebay for 50.
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RandomDan




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PostPosted: Sun Jul 30, 2017 11:48 am    Post subject: Reply with quote Reply with quote including images

danjama wrote:
RandomDan wrote:
robbie_742003 wrote:
Whereabouts are you Dan? I changed mine a while ago cos i thought it was knackered but i think i changed for nothing.
You could try it then give me beer tokens [Laughing]

Rob


Thanks for the offer but we have a new one on the way now.


xxxx know where all you guys found them though as the only one we could find was from MR2Ben at 85!
I know it expensive but you cant argue with the service and garanteeing to get the right one is worth it.


But Gareth gave you a link to the exact one? What a waste of money...you can get the firect fit denso one on ebay for 50.


I cant see any links to the right one :S

I wouldnt have spent that if i didnt feel i needed too.
Besides iv been burned before buying the 'right' part from som random ebay seller.
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Race Idiot
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1994 Toyota MR2 Mk2 Turbo Rev3

PostPosted: Sun Jul 30, 2017 2:29 pm    Post subject: Reply with quote Reply with quote including images

I posted a link to the one on opieoils which comes up when you choose the a 1995 celica gt4 which is the correct one for this car also.
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pbmr2
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PostPosted: Sun Jul 30, 2017 10:29 pm    Post subject: Reply with quote Reply with quote including images

Gazza_DJ wrote:
Hard to tell without the full results but a backbox leak would not affect CO figures, it would affect the calculated lambda though. If there was a hole pre o2 sensor that would cause it to read lean and compensate by adding more fuel, which would increase CO.

O2 is simple enough to test with a multimeter though.


yep simple to test, wonder why people don't before buying parts?
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RandomDan




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PostPosted: Wed Aug 02, 2017 3:18 pm    Post subject: Reply with quote Reply with quote including images

Well iv just had it re-tested with the new sensor and its exactly the same.

So next job to check the manifold for leaks?
Not a job im looking forward too!

It may also be worth me noting that the breather from the cam cover is quite loose and leaking oil and presumably air that wouldnt cause the problem would it?

Ill get a picture of the full emmisions run down ASAP for those intrested to digest.

Bloody old cars! xD
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Gazza_DJ
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1997 Toyota MR2 Mk2 NA Rev4

PostPosted: Wed Aug 02, 2017 3:25 pm    Post subject: Reply with quote Reply with quote including images

What are the new figures compared to the old ones? Can you post photos of the emissions test result sheet for both tests?
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Gazza_DJ
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1997 Toyota MR2 Mk2 NA Rev4

PostPosted: Wed Aug 02, 2017 3:28 pm    Post subject: Re: MOT Emmisions failure Rev3 Turbo! Reply with quote Reply with quote including images

RandomDan wrote:


The Fail was on CO content at 0.58 natural idle and 0.49 fast idle.
The limit being 0.3.


Back to the OP as I've just clocked this...
What is your cars date of first use? *Most* Rev3 turbos have a higher limit. Any MR2 Turbo with a date of first use of 31st July 1995 or earlier has a limit of 3.5% CO, 1200ppm HC.
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RandomDan




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PostPosted: Wed Aug 02, 2017 4:02 pm    Post subject: Reply with quote Reply with quote including images

Hopefully this works, y first time using flikr since the photobucket incident.
I already hate Flikr good start.

ANYWAY

20562880_10159124402135298_1083419156_n by Dan SO, on Flickr

That is the old one.
The new results were much the same but the HC is a tad higher now.
I didnt get a print out for the latest test as they were doing it as more of a favour.
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RandomDan




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PostPosted: Wed Aug 02, 2017 4:02 pm    Post subject: Reply with quote Reply with quote including images

The car is a 96.
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