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Author Topic: Re: MOT Failure Please Help  (Read 576 times)

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mark.adams

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Re: MOT Failure Please Help
« on: 24 September 2009, 08:53:39 »

To my untrained eye, if the engine coolant sensor is sending incorrect info (or no info) to the ecu then the engine will run too rich and that could explain the EGR valve being out of range too.
Basically the ecu thinks the engine is colder than it is and adjusts the petrol/air mix accordingly
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feeutfo

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Re: MOT Failure Please Help
« Reply #1 on: 25 September 2009, 23:44:46 »

 Er :-/ maybe a visit to a tech 2 owning member on here will help?
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rustym95

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Re: MOT Failure Please Help
« Reply #2 on: 25 September 2009, 23:56:04 »

Quote
To my untrained eye, if the engine coolant sensor is sending incorrect info (or no info) to the ecu then the engine will run too rich and that could explain the EGR valve being out of range too.
Basically the ecu thinks the engine is colder than it is and adjusts the petrol/air mix accordingly
Yep that sounds about right, but dont 4get the LPG.
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