Renault Laguna II - Phase 1 - Engines - Non Starter ? - TDC and tips - Page 4 - Renault Forums :: Independent Renault forum

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post #16 of 19 (permalink) Old 15th September 2006
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The TDC or crankcase position/ flywheel sensor as its also referred to, is located in different positions depending on the engine type. I have a laguna 2.0 IDE and its not possible to even see the sensor unless you remove the air box, battery tray and the heater matrix hose bracket from the right hand end of the engine (standing in front of car). The sensor is curved with a bolt fixing at each end and mounts onto the end of the crankcase at the flywheel top position at the very end of the gearbox flange. On the TDI engines I beleive the sensor sits on top of the gearbox so it can be seen more easilly. Its about a 3 hour job to remove and refit a new sensor and make sure you have a hammer and pin punch ready , to drive round the security bolts on the battery tray. While you have the airbox out and battery off , you can also clean up the throttle body using kitchen towels and intake/carburettor cleaner. Another tip is to grease up the battery terminals with petroleum jelly (vaselene) to prevent corrosion before re connecting.
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post #17 of 19 (permalink) Old 2nd October 2006
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Can you elaborate on how to clean a throttle body ?
Any info would be welcome please

Last edited by MIKE4369; 9th October 2006 at 03:48 PM.
post #18 of 19 (permalink) Old 28th November 2006
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Starting Problem

Originally Posted by Daver View Post
I hope some one can help me please, i have a laguna 2.0 ide and every now i drive it for a while turn off and when i go to start it, it wont start ! put card in, all the lights come on push the start button and all it does is turn over, but will not fire up,

can anybody help me please....

Had the same problem with my phase 2 laguna 1.8. A Renault apprentice suggested fitting a new plug on the throttle body it costs about 25. If you look at the engine from the front of the car it is located at the back left hand side of the engine it is a grey plug with 6 wires going to it. Unclip it and check for corrosion the pins are made from gold so a really good connection is paramount to make the car start.
Another symptom of this problem is the car will start in safe mode i.e the engine revs to approx 2500rpm and the accelerator will not function. It is possible (just) to drive the car like this but it will only go about 25 mph flat out.
The part is available by Renault as it was originally designed as a piece of test loom
Had this done to my car two months ago and absolutely no probs since so good luck
Steve o
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post #19 of 19 (permalink) Old 29th March 2007
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TDC Sensor

Thanks for the information regarding the TDC sensor, I have a 2004 Laguna and it would not start even though it would turn over so I tried the solution regarding the TDC sensor offered in the forum and it worked. The thing is now I will need to replace the existing one with a new one.

How easy is this to do? I am mechanically adept so I just need to be pointed in the right direction.

Thanks again to everyone and its nice to receive help from people.

Xantia 6660
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engines , laguna , phase , renault , starter , tdc , tips

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