2015 astra gtc - not starting

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Sun 16 Mar 2025 13:49
2015 astra gtc - not starting - Si Ellis

astra drove and parked next morning it wouldn't start spark plugs changed emissions control valve changed.

Car starts with difficulty.when warm starts with no problem.After night in garage it will not fire at all.any ideas tia.

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Sun 16 Mar 2025 14:32
2015 astra gtc - not starting - elekie&a/c doctor
What testing has been conducted?
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Mon 17 Mar 2025 17:30
2015 astra gtc - not starting - Si Ellis

Halfords plugged OBD there were not codes logged

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Mon 17 Mar 2025 19:00
2015 astra gtc - not starting - elekie&a/c doctor
Plugging in an obd tester is not going to provide enough information to go forward with this problem. More in depth analysis will be needed.
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Mon 17 Mar 2025 19:36
2015 astra gtc - not starting - Si Ellis
Plugging in an obd tester is not going to provide enough information to go forward with this problem. More in depth analysis will be needed.

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Wed 19 Mar 2025 14:45
2015 astra gtc - not starting - Si Ellis

elekie&ac thanks for your replies,it turned out that the temp gauge was reading 90°there a fault with either of the temperature sensors a new thermostat was fitted a year ago due to cooling fan running constantly both sensors now replaced started perfect when cold.

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Wed 19 Mar 2025 14:49
2015 astra gtc - not starting - elekie&a/c doctor
That makes sense. No fault code because the computer doesn’t know the reading is not correct. Remember, computers are clever but they have no brain.
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