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Problem starting

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Problem starting

Postby JILLYPIPS » Fri Jun 08, 2018 6:22 pm

Hi all
Couple of days ago my 2002 plate wouldn't start. Found out the pipe that goes to fuel filter had come off. Easy fix just clicked back into place. This is where the problem starts, since then the car starts first time from cold but from hot or within an hour of turning off it turns over but won't fire up. Any suggestions
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Re: Problem starting

Postby IanL » Fri Jun 08, 2018 8:27 pm

You haven't said which engine you have (there are four possibilities).

My first stab would be the inlet air temperature sensor or the coolant temperature sensor.
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Re: Problem starting

Postby JILLYPIPS » Fri Jun 08, 2018 8:38 pm

Hi it's 2.0 L
Could changing the petrol pump have caused this or is it coincidence?
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Re: Problem starting

Postby IanL » Fri Jun 08, 2018 11:37 pm

JILLYPIPS wrote:Hi it's 2.0 L
Could changing the petrol pump have caused this or is it coincidence?


I can't see a connection between the pump and the engine temperature.
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Re: Problem starting

Postby JILLYPIPS » Sat Jun 09, 2018 2:07 pm

Hi Ian
Where would I find the air intake sensor?
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Re: Problem starting

Postby IanL » Sat Jun 09, 2018 8:34 pm

Image

I'm not familiar with this engine, but I think Item 7 is the coolant temp. sensor, Item 12 is the inlet air temp. sensor, and Item 10 is the air pressure sensor. EDIT - corrected in next-but-one post.

If you want to know which part numbers apply to your engine (Items 7 and 12), post the last eight digits of your VIN, and I should be able to tell you.
Last edited by IanL on Sun Jun 10, 2018 9:20 am, edited 2 times in total.
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Re: Problem starting

Postby JILLYPIPS » Sat Jun 09, 2018 8:58 pm

Thank you will have a look
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Re: Problem starting

Postby IanL » Sun Jun 10, 2018 9:19 am

I've done some research, and Item 7 is the Coolant Temperature sensor, Item 8 is the Manifold Pressure Sensor, Item 10 is the Camshaft Position Sensor and Item 12 is the Inlet Air Temperature Sensor.

It is possible that any of these is defective and supplying inaccurate data when hot. I would suggest trying in this order: 10, 8, 12, 7.
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Re: Problem starting

Postby Capncol » Mon Jun 11, 2018 6:10 pm

Crank position sensor can cause hot start issues without throwing up a fault
Cheers Col.


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Re: Problem starting

Postby IanL » Mon Jun 11, 2018 11:26 pm

Capncol wrote:Crank position sensor can cause hot start issues without throwing up a fault


That is Item 5.
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Re: Problem starting

Postby steve747 » Tue Jun 12, 2018 6:05 pm

Hi
Another thing is the starter motor clicking when hot?
Only if the starter motor clicks when trying to start , and when cools down it starts then its because the starter is on its way out.
When you are starting the car and say your waiting to get up to temperature there is no air circulation around the starter motor the coil windings break down. so when the coil cools down the ohms can travel to the solenoid..
This Happened to me..

steve
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Re: Problem starting

Postby IanL » Tue Jun 12, 2018 10:06 pm

steve747 wrote:... so when the coil cools down the ohms can travel to the solenoid..

I think you mean current can flow. i.e. amps.

Anyway, Jilly says "it turns over but won't fire up", so it's not that.
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Re: Problem starting

Postby JILLYPIPS » Tue Jun 19, 2018 1:17 pm

Hi all thanks for your response
Looks like I'll be working my way through sensors
Will update when sorted
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Re: Problem starting

Postby JILLYPIPS » Wed Jul 11, 2018 10:38 pm

Quick update
We changed the crank position sensor as this seemed to be the most logical place to start. It solved the cutting out when idling problem but not the lack of starting when hot
Turns out the new fuel pump was faulty so replaced it and touch wood we're all good
Thank you again for all advice
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Re: Problem starting

Postby IanL » Wed Jul 11, 2018 11:45 pm

That is quite a surprise. Why a defective fuel pump would allow starting when cold, but prevent it when hot is beyond my ken.

The engine needs a richer mixture, i.e. more fuel, when cold......
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