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post #1 of 3 (permalink) Old 16th March 2009 Thread Starter
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Hot start problem

Ya hi guys iv looked at a lot o similar appearing problems but not found this ! Scenic 16 rt 1998 starts fine when cold an will start all day long when cold but as soon as she warms up to normal opperating temp and is switched off well just forget it !! Battery seems as though its near completly drained and will barely turn over the engine. Leave it for 20 minites or so till she cools down and its like there is a new battery in place all powerfull and spinning engine over like a bullet train goin down hill!! Any ideas,its driving me insane if im not there already !!cheers b.b
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Hot start problem Electronics madnoel10 2 790 16th March 2009 04:45 PM
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Old 16th March 2009
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post #2 of 3 (permalink) Old 16th March 2009
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It's just possible the alternator is overcharging the battery and gassing it i .e. creating a lot of gas bubbles in it.

Try checking the voltage (if you have a meter) across the battery terminals when the engine is running - around 14volts is good, more than 15v is too much.

Also, test the battery voltage with the engine off when both hot & cold. 12.5v is good, 12v or less indicates battery in knackered.

Also check for corrosion in earth strap from battery to engine.
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post #3 of 3 (permalink) Old 16th March 2009
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It may be worth checking the TDC sensor plus the coils - electrics perform worse when they get hot
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