S40 V40: - Ignition problem

rajaii · Dec 24th, 2012, 09:54

I have the Volvo s40 Phase 1 in the 2.0 (B204S) engine.

When i start the car in the morning or the first start it starts perfectly, but after it has run for sometime if i try to start it fails to start. Only way to start the car when this happens is to quickly turn the key from Drive(Position II) to ignition (position III) before the self test finishes.

I changed all spark plugs & engine oil just tow months back and the battery is in good condition

.

Can anyone please help ?

gatos · Dec 24th, 2012, 10:29

When was the last time you changed the fuel filter?

Also, can you try disconnecting the MAF and see if it makes a difference.

Also, check the vacuum lines and see if they are blocked or if they are split at any point

Dog_Book · Dec 24th, 2012, 10:36

don't have a MAF

rajaii · Dec 24th, 2012, 10:53

I haven't changed the fuel filter, but i removed the fuel filter sometime back and it didn't look like it needed replacement.

I will try disconnecting the MAF sensor and see if there is any difference.

Also can u tell me which vacuum lines to check (diagrams if possible) and can you suggest a way to check blockage in the vacuum lines.

gatos · Dec 24th, 2012, 11:25

Ermmm, don't have a photo of them, sorry. Check all small hoses from the air filter and the ones connected to the throtle bode

Dec 24th, 2012, 09:54	#1
rajaii New Member Last Online: Mar 3rd, 2021 03:06 Join Date: Aug 2012 Location: Colombo	Ignition problem I have the Volvo s40 Phase 1 in the 2.0 (B204S) engine. When i start the car in the morning or the first start it starts perfectly, but after it has run for sometime if i try to start it fails to start. Only way to start the car when this happens is to quickly turn the key from Drive(Position II) to ignition (position III) before the self test finishes. I changed all spark plugs & engine oil just tow months back and the battery is in good condition . Can anyone please help ?

Dec 24th, 2012, 10:29	#2
gatos Premier Member Last Online: Nov 15th, 2022 21:34 Join Date: Apr 2010 Location: London / Essex	When was the last time you changed the fuel filter? Also, can you try disconnecting the MAF and see if it makes a difference. Also, check the vacuum lines and see if they are blocked or if they are split at any point __________________ Current car: 2002 S40 1.9D, 1992 240SE Nullius in Verba

Dec 24th, 2012, 10:36	#3
Dog_Book Idiot Last Online: Apr 21st, 2019 17:29 Join Date: Nov 2006 Location: Derby	don't have a MAF __________________ Vectra VXR estate convert Experience = V40 1998 2.0 CD lots of mods Busy pestering the poor sods here now

Dec 24th, 2012, 11:25	#5
gatos Premier Member Last Online: Nov 15th, 2022 21:34 Join Date: Apr 2010 Location: London / Essex	Ermmm, don't have a photo of them, sorry. Check all small hoses from the air filter and the ones connected to the throtle bode __________________ Current car: 2002 S40 1.9D, 1992 240SE Nullius in Verba

Dec 24th, 2012, 10:53	#4
rajaii New Member Last Online: Mar 3rd, 2021 03:06 Join Date: Aug 2012 Location: Colombo	I haven't changed the fuel filter, but i removed the fuel filter sometime back and it didn't look like it needed replacement. I will try disconnecting the MAF sensor and see if there is any difference. Also can u tell me which vacuum lines to check (diagrams if possible) and can you suggest a way to check blockage in the vacuum lines.

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