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Author Topic: MOT Emissions Test Failure  (Read 1973 times)

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MOT Emissions Test Failure
« on: 20 November 2007, 08:34:19 »
Not mine, my mates 2.0 gls estate.

Last year it failed it's emissions test, told it needed new cats.

Had new cats fitted, MOT this year failed again, advised it needed new cats!

It does burn oil, done about 145K.

Any ideas please?
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Re: MOT Emissions Test Failure
« Reply #1 on: 20 November 2007, 08:35:28 »
Before anyone asks, no fault codes showing on a paper clip test.
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Re: MOT Emissions Test Failure
« Reply #2 on: 20 November 2007, 08:38:59 »
What did it fail on....HC's, CO, idle, fast idle.......
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Re: MOT Emissions Test Failure
« Reply #3 on: 20 November 2007, 08:44:33 »
I'll ask, but I remember him saying it was reading 80 and should have been 30.
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Re: MOT Emissions Test Failure
« Reply #4 on: 20 November 2007, 08:45:20 »
Is that the speedo....?  ::)

We need to know the details...
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Re: MOT Emissions Test Failure
« Reply #5 on: 20 November 2007, 08:47:07 »
Quote
Is that the speedo....?  ::)

We need to know the details...

I'll phone him.
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Re: MOT Emissions Test Failure
« Reply #6 on: 20 November 2007, 08:48:17 »
Ask him also what the temp gauge is reading?
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Re: MOT Emissions Test Failure
« Reply #7 on: 20 November 2007, 08:51:16 »
Will do :y
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Re: MOT Emissions Test Failure
« Reply #8 on: 20 November 2007, 09:12:25 »
Quote
Ask him also what the temp gauge is reading?

Still waiting for him to come back to me.

Are you thinking EGR?

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Re: MOT Emissions Test Failure
« Reply #9 on: 20 November 2007, 09:58:07 »
No, coolant sensor or stat stuck open.....keeping it in warm up mode.
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Re: MOT Emissions Test Failure
« Reply #10 on: 20 November 2007, 10:13:31 »
Fast Idle test:-

CO READING LIMIT .30 ACTUAL 1.02

2nd FAST IDLE TEST

CO READING LIMIT .30 ACTUAL .93

ENGINE OIL TEMP BYPASSED.
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Re: MOT Emissions Test Failure
« Reply #11 on: 20 November 2007, 10:16:41 »
Quote
Fast Idle test:-

CO READING LIMIT .30 ACTUAL 1.02

2nd FAST IDLE TEST

CO READING LIMIT .30 ACTUAL .93

ENGINE OIL TEMP BYPASSED.

Sudgests its still in open loop operation....whats the temp gague reading when hes driving about...

Idealy it wants tech 2 to confirm Lambda operation and coolant temp reading.
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Re: MOT Emissions Test Failure
« Reply #12 on: 20 November 2007, 10:25:51 »
Hardly registers when he's driving.

Would it be convenient to come over one evening this week for you to TechII?
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Re: MOT Emissions Test Failure
« Reply #13 on: 20 November 2007, 10:49:17 »
By the way, it's a 97 model.
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Re: MOT Emissions Test Failure
« Reply #14 on: 20 November 2007, 10:57:23 »
Quote
Hardly registers when he's driving.

Would it be convenient to come over one evening this week for you to TechII?


Makes me wonder if it was like that last year when someone sold him a new cat.

However, in a MOT environment it will be bouncing on and off the cooling fan switch so it might go unnoticed without a road test.

Kevin
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