Renault Laguna 2 - 1.8 16v Throttle Problem*FIXED* - Page 6 - Renault Forums :: Independent Renault forum

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post #26 of 129 (permalink) Old 11th December 2007
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you should also see in the rules of the forum that you are not allowed to name and shame dealers, due to possible legal action against the forum...when a moderator sees the thread they will edit out the name of the dealer.

Life is too short...laugh and enjoy it while you are able to

'24 hours in a day, 24 beers in a case. Coincidence? I Think not !!
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post #27 of 129 (permalink) Old 12th December 2007
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Thanks for explaining that rule about naming dealers Astrix!

To see if my car is really fixed, I will have to take my car out for an hour long drive , stop it and start again after about an hour.

I think I will do it a few times this week. If it is still not fixed, I should know it soon. I will come back with more news later.
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post #28 of 129 (permalink) Old 3rd January 2008
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As mentioned in the previous post, I tried myself to fix the "elctrical fault" problem but finally gave up. I took my car to the local dealer (I am in the Netherlands), paid 550 euros to finally get it fixed. They invited me to watch the whole procedure. My car is a LPG one, therefore there is an extra computer for the LPG system installed. Many many extra wires are connected from the LPG system to the main ECU . Unfortunately, some the wires are not well connected. The guy has to cut all the wires, reconnect them one by one. After this is done, they found actually a connector that feed all those wires to the main ECU is broken. They repeated the work with a new connector.

I have been driving my Laguna for one month after all these are done, the problem never comes back again. I hope my experience will help anyone has the similar problem.
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post #29 of 129 (permalink) Old 6th January 2008
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I've got a similar problem with a 1999 1.9dTi Laguna Alize. Whenever we drive in very heavy rain with lots of water on the highway the injector light comes on and the car goes to limp home mode.

The computer diagnosis is a fault with the potiemeter (which the Renault Dealer was quick to replace). This of course didn't solve our problem!! On one instance it stopped raining and the road dried out - the car appeared to dry out and continued a long 200 mile drive home without a problem.

Since then all the wiring has been checked, a plate was put under the ECU the protect it against water coming up from the road and the oringal battery has been replaced. The fault reoccured under the same wet conditions but the car was quicker to recover and drove though it. Again it stopped raining and it was fine. Today we started the car (no rain at all) and the problem occured immediately. This is the first time it has occured off a motorway and in the dry, however the January air is quite damp.

We sprayed WD40 on the battery terminals and revved the car a couple of times. It seemed to work fine after that.

Do you think this problem might be occuring because the battery is not sending enough power when you try to accelerate?? Could this be a similar problem?

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post #30 of 129 (permalink) Old 28th March 2008
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Mu 02 1.6 also has this problem, fairly infrequent but identical symptoms. So with dad and mechanic friend decided to take out the ecu and give the terminals a clean as suggested, all went well, neither the ecu pins or the connectors looked too bad although we did find some blue gunky stuff on a couple of them ( felt like silicone). Anyway put it all back together and - nothing- car won't start, checked connections again and all seem in place and ok, any ideas what we've done wrong?

Sorted! Don't know what we did but we realised we couldn't hear the fuel pump when we switched the igntion back on, wiggled & pulled relays and fuses, put them back and she started first time.
I took some photos of the ecu and connectors, if it would help anyone thinking of doing this I'll happily put them up but might need guidance as to where on the forum they should be.
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Last edited by Bubs; 28th March 2008 at 06:16 PM.
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16v , laguna , problemfixed , renault , throttle

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