1994 2.0rt Renault Laguna fault code diagnosis - Renault Forums :: Independent Renault forum

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post #1 of 2 (permalink) Old 3rd January 2008 Thread Starter
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1994 2.0rt Renault Laguna fault code diagnosis

Hello all, apologies for this being my first post but I've tried searching through your extensive archives to find some help with a problem with my Renault Laguna.

It is proving very difficult to start first thing in the morning with lots and lots of churning involved! Thereafter for the rest of the day it starts fine though!

As far as I can tell the fuel pump whirrs up when the ignition is turned on and the immboliser seems to be turning off (have done it by code rather than the plipper).

It just sits there churning and churning until it eventually fires and starts!

I thought Id see if there is a way to find out if there are any fault codes stored in the engine management system but haven't found any way of getting the codes!

Any help with either the problem itself or how to find the codes would be great, thanks in advance

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1994 2.0rt Renault Laguna fault code diagnosis Electronics clunk.stp 1 1558 3rd January 2008 06:59 PM
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post #2 of 2 (permalink) Old 5th January 2008
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Check the coolant temperature sensor for the ecu . If it is giving out an incorrect signal then the ecu will not richen up the fuel mixture for cold starting. And it will assume the engine to be at 50 deg C. It should have a resistance of 2500+ ohms for a cold engine. And around 300ohms for a hot engine.
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1994 , 20rt , code , diagnosis , fault , laguna , renault

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