Car won’t start when hot just turns over slowly

[Dibdab5159]

Hi new to this but can any one help I own a 206cc 1.6 allure 98000 miles 55 plate Petrol starts fine when cold but after
Driving to work and trying to start the car agin it won’t start turns over really slowly I have replaced the start moter with a new one and replaced the crank shaft sensor on gear box it still does same thing any help would be appreciated I just don’t know where to look next could it be earth straps or battery

[IanL]

If it is turning slowly, and you have replaced the starter, then it is very likely the battery or the earth. If you have a voltmeter, you should measure between the a bare metal part on the car's chassis and the negative battery terminal while the starter is operated. If it reads more than (say) 0.5 V, the earth is suspect.

Also measure the battery volts before the car is running - it should be at least 12.4 V, and after the engine starts 14.3.

[Dibdab5159]

Ok thank for the advice I will give this a try at work tomorrow will report the outcome

[GrandadMonkey]

Did you replace the starter motor with a brand new one?

[Dibdab5159]

Hi ya yeh it was a band new one it’s strange the temp gauge also goes right up after I’ve turned it of and left it few mins then all it does it turn over slowly then I try again and it starts any help or ideas would be great

[Capncol]

Do you have enough coolant? Sounds like engine could
be tight

[Capncol]

That's assuming you have checked the other suggestions

[Dibdab5159]

All coolant levels are fine the car works a treat but when get stuck in traffic heat gauge goes up quite high
Fan does kick in temp goes down I turn it off go inside for few mins turn it on and the heat gauge is back up and that’s when it won’t start and turns over slowly I’ve not had chance to Do earths and battery yet it only started doing this in the hot in the summer that why I changed start Moter and crank
shaft sensor I also hear the temp switch’s can be faulty maybe a coolent change too I’ve only owned car for year serviced it but didn’t change coolent

[IanL]

I think it's the water pump. I would replace it, and consider a new cambelt and tensioner at the same time, just because it's convenient when doing the pump.

[Dibdab5159]

Thanks for all the advice guys finally solved the problem it was the battery the old girls good as gold now

[GrandadMonkey]

Well done Dibdab. Thanks for feeding back the outcome.