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post #1 of 4 (permalink) Old 15th March 2006 Thread Starter
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Exclamation Laguna - intermittent starting problems.

Hi all,
hope you can help me out with some advice on my 1999 Laguna 1.6 petrol.

I have searched the forum and am wondering if you think my problems are being caused by a faulty TDC sensor or something else.

My initial thoughts were a faulty starter but have had it checked in my local garage (not a Renault garage) who advised me to put it in to an auto-electrician as they could not find a mechanical fault.

The symptoms are as follows:

About 4 weeks ago my battery gave up on me (went out in morning to find it totally dead and had to reset clock and radio code).
Put a new battery in and it started but only just (turned over slowly as if battery low). Battery has been tested and is OK and charging when engine on. It has not completely run down again.

Would not start next morning but bump started on a slight incline in reverse gear.

Car will mostly not start now without a jump start although it will occasionaly.
It sometimes starts no problem after it has been sitting for a few hours but sometimes will not after only sitting switched off for a few minutes.
When it doesn't start it struggles to turn over as if the battery is low.
I have a jump starter unit which I use to start the car but strangely I do not have to switch it on. I just connect the 2 clips to the battery and turn the car key and away she goes. Noticed this when I forgot to switch it on one time and confirmed it by deliberately not switching on next time. Do these jump starters give out power when switched off?

The TDC sensor seems to be a common factor in starting problems but I don't think it fits in with my symptoms. I am still leaning towards a dodgy starter motor.

Any advice would be much appreciated.
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Engine cut out while driving will not restart Engines 8 1914 1st December 2006 09:15 PM
Laguna - intermittent starting problems. Electronics jayjaynz 3 2220 15th March 2006 09:39 PM
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post #2 of 4 (permalink) Old 15th March 2006
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Hello,and welcome to the forum.

No,your problem is not TDC sensor related!

It is one of a few things;

The new battery you have is faulty

You have a drain on the battery that is flattening it if it's left for any period of time

You have a faulty starter motor

The engine is beginning to seize up!(unlikely)

I would have a drain check done (ammeter between battery negative terminal and disconnected earth lead) to determine if this is the case.

Have the battery tested under load to determine if it's O.K

If the battery is O.K and no drain,then suspect the starter motor.

And one other thing,check you have a good engine earth.

I'd rather push my Alfa than drive a BMW....
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post #3 of 4 (permalink) Old 15th March 2006 Thread Starter
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thanks for the quick response.

The battery has been load tested and is ok (giving out 14 volts if I remember correctly what the mechanic said).
I don't think something is draining it as the car has recently sat idle for 4 days without it going completely flat.

Are there any other wires I should be checking apart from the earth cable from battery to car body?

Any pointers to the cheapest place for a new starter motor?

Thanks for the help,
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post #4 of 4 (permalink) Old 10th November 2009
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Cool further question on battery drainage problems

Gleaning the forum's wisdom for a solution on my new pre-loved Laguna's battery problem provides me with some options - but Davy mentioned his jump starter.
Can you advise whether a 900amp is sufficient to revive the battery on my diesel model 2.2 Monaco ?
I havent found why its being drained yet, but I think I need one of these in case there are no knights in shining armour (with fully charged car battery) around next time. Although I do provide my own jump leads, theyre no b.....y good without the other battery.
The battery has been checked as good by the RAC man!
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intermittent , laguna , problems , starting

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