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Renault: warning light..ruff when idling and over 40 mph…

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renault clio 1200l 16v 2002...
renault clio 1200l 16v 2002 toxic fume monitoring warning light is flashing ruff when idling and over 40 mph starts chugging
Submitted: 8 years ago.Category: UK Car
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Answered in 7 hours by:
6/29/2010
UK Auto Mechanic: Mike, UK Car Mechanic replied 8 years ago
Mike
Mike, UK Car Mechanic
Category: UK Car
Satisfied Customers: 39,198
Experience: Hi, I am a Car/ vehicle technician of 34 years. 29of -running my own repair/diagnostic business.
Verified

Hello and Welcome to justanswer.........

 

As you have this light on ..this is indicating that the ECU - management computer, has detected and logged a fault or faults, somewhere in the management systems...

This could be a sensor fault or wiring issues or even a fault with the main ecu itself... ( the latter is quite rare ) but you see the problem... it's impossible to guess exactly where the fault(s) may be.

What you will need to do now is have the cars systems connected to a suitable diagnostic machine - preferably dealer level equipment... to read / scan the cars ecu - to retrieve the now stored / logged fault code(s)...

Once these are retrieved - then you / the user - will be directed to the area of fault and that can then be dealt with.

To be honest , throttle body faults are common on these - its a case of stripping and cleaning them thoroughly..and see if that helps..it often can cure this problem..

What you can also do on a DIY basis - is go around all the wiring connectors around the engine - giving them a tug and a wiggle... just in case you have a poor connection somewhere on one of the sensors / drivers etc... If you do happen to hit on one thats causing the light to come on - the light will usually go off then at the next "start" as the ecu will see the fault is cleared. ( Some cars you need to have the ecu cleared with the diagnostic equipment ) ...

So try that -its worth a try... but failing that - you will need to have it connected up to equipment as I've mentioned...

Many smaller garages have suitable equipment for these these days so if you cannot locate the fault yourself as above - then have a ring around to arrange to have that done and then it will get sorted.

The reason the engine holds back on power by the way - will be because of one of two reasons.... either its because of the actual fault in itself - or, the ecu has put the systems into whats called LHM - Limp Home Mode... this is a basic running mode -(default settings) to allow you to get home (or a garage ) rather than break down -- and this protects the systems - so that you cannot rev it above a certain range whilst the fault exists...

I Sincerely XXXXX XXXXX have helped you - Please ask me if you need more help
...


Kind Rgds, MIKE

 

  • >>>>>>>>>Please don't forget ....Please press the ACCEPT button if you are happy with my answer/advice given -as that's how I get paid for my time ... Thank you...

 

Feedback and any Bonuses are always appreciated too. Thank you.

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