Engine is struggling to start in a morning.

Hi Need some help. Engine is struggling to start in a morning. I've changed plugs coil pack. Crankshaft sensor. But still struggling. Could it be the temp sender that's faulty. Not sending a signal to the ecu telling it to put the choke on. After a couple of turns of the key it well eventually run. Then when the engine is hot it's turns over on the first turn of the key.

Hi Rough1

Rough1 wrote: ↑Sun Nov 11, 2018 8:06 pm Engine is struggling to start in a morning

Does it turn over as quickly in the morning as it does when the engine is hot?

Hi there. Yes it does

There is no choke, so I would start with the basics like having the battery tested for output. Cold cranking takes the most out of a battery and will quickly show a failing battery.

Euro car parts (here) can identify the right battery from the reg of your C3.

Cheers. It has a fairly new battery on. Could it be a camshaft sensor. After that I haven't got a clue. Thanks.

Rough1 wrote: ↑Sun Nov 11, 2018 10:57 pm Could it be a camshaft sensor.

No, definitely not.

A cam shaft sensor will either work or it won't.

You will get a code stored for cam or crank or any other engine sensor. Use this cheap OBD2 scanner on Amazon to read and clear the stored codes for engine faults.

Rough1 wrote: ↑Sun Nov 11, 2018 10:57 pm It has a fairly new battery on.

Well, it would still be worth getting it tested for output, the CCA type of grunt needed to turn an engine over. Interestingly you have starting problems and have had a recent battery, are they all connected? Has the reason the first battery gave up been addressed?

Rough1 wrote: ↑Sun Nov 11, 2018 10:57 pm After that I haven't got a clue. Thanks.

Rough1 wrote: ↑Sun Nov 11, 2018 8:06 pm I've changed plugs and the coil pack.

Plugs, gapped correctly and a decent coil pack would be good candidates to change and you have already done this.

Odd things like the wrong grade of oil can affect the turn over on a cold morning, but you say the turn over is as good hot as cold, so it's probably not that.

Rough1 wrote: ↑Sun Nov 11, 2018 8:06 pm Could it be the temp sender that's faulty

It would be an easy parts change to do and without access to a lexia system to monitor the temperature sensor, it may just be easier to swap it out.

All sorted.. fitted a new temp sender. One in car was faulty giving wrong signal to ecu. Works first turn of key. Happy days

Rough1 wrote: ↑Tue Nov 13, 2018 7:52 pm All sorted.. fitted a new temp sender. One in car was faulty giving wrong signal to ecu. Works first turn of key. Happy days

Great work, thank you for the update