S40 V40: - Idling issue

Harry S · Nov 11th, 2012, 17:42

I have a V40 2001 model. 2L auto, with 150 000km on the clock. Suddenly recently when the car is normal opperating temp, starts to have a rough idle, almost like a miss. I switch car off and start immediately and it coninues to sound funny and idles rough. If I put the car off for about 5 min then the idling is normal again when i switch it on.
Its only recently its doen this. I have cleaned the throttle body and idling control valve. I have also replaced the spark plugs. Please help.

Jillhn · Dec 5th, 2012, 03:53

Hi, I'm having a similar issue. Did you find the answer?

Harry S · Dec 9th, 2012, 15:53

I have thought of replacing the fuel pressure regulator. It is very possible that could be the problem. I will post my finding as soon ad i have done so.

Harry S · Jan 2nd, 2013, 20:36

I have replaced the fuel pressure regulator and all idling, starting, etc issues have now come to an end. She idles smoother than she ever has and she starts within 2 seconds.

sarumboy · Jan 2nd, 2013, 22:31

That's great news HarryS. Mine's the same car as yours with 100k miles and I'm about to change the FPR too (it's on order) as mine takes too long to crank up before firing. Was it an easy job? Any tips?
Cheers Sarumboy

gatos · Jan 3rd, 2013, 00:46

See my mini guide here: http://www.volvoforums.org.uk/showthread.php?p=1146859

bigyin85 · Jan 3rd, 2013, 03:44

mines still idling a bit funny, has anyone got a spare fuel pressure regulator for a t4? just wanna check 2 see if it is that

sarumboy · Jan 3rd, 2013, 07:09

Thanks Gatos, looks straight forward enough. Good photos by the way. Cheers.

Nov 11th, 2012, 17:42	#1
Harry S Harry S Last Online: Sep 2nd, 2022 22:09 Join Date: Apr 2012 Location: Pretoria, South Africa	Idling issue I have a V40 2001 model. 2L auto, with 150 000km on the clock. Suddenly recently when the car is normal opperating temp, starts to have a rough idle, almost like a miss. I switch car off and start immediately and it coninues to sound funny and idles rough. If I put the car off for about 5 min then the idling is normal again when i switch it on. Its only recently its doen this. I have cleaned the throttle body and idling control valve. I have also replaced the spark plugs. Please help.

Jan 2nd, 2013, 22:31	#5
sarumboy Member Last Online: May 18th, 2019 21:39 Join Date: Aug 2010 Location: Cookham	Idling/Starting issues That's great news HarryS. Mine's the same car as yours with 100k miles and I'm about to change the FPR too (it's on order) as mine takes too long to crank up before firing. Was it an easy job? Any tips? Cheers Sarumboy

Jan 3rd, 2013, 00:46	#6
gatos Premier Member Last Online: Nov 15th, 2022 21:34 Join Date: Apr 2010 Location: London / Essex	See my mini guide here: http://www.volvoforums.org.uk/showthread.php?p=1146859 __________________ Current car: 2002 S40 1.9D, 1992 240SE Nullius in Verba

Jan 3rd, 2013, 03:44	#7
bigyin85 S40 T4 Sport Last Online: Nov 21st, 2023 15:01 Join Date: Aug 2012 Location: Norwich	mines still idling a bit funny, has anyone got a spare fuel pressure regulator for a t4? just wanna check 2 see if it is that __________________ Current motor 02' Volvo S40 T4 Panama Yellow, JT turning 3inch full stainless from turbo back, pipercross induction kit, forge dump valve and blanking plate, Coilovers, 17" Dezent Alloys Previous motor 97' Volvo V40 1.9 T4 CD 200bhp

Jan 3rd, 2013, 07:09	#8
sarumboy Member Last Online: May 18th, 2019 21:39 Join Date: Aug 2010 Location: Cookham	Fpr Thanks Gatos, looks straight forward enough. Good photos by the way. Cheers.

Dec 5th, 2012, 03:53	#2
Jillhn New Member Last Online: Dec 5th, 2012 04:24 Join Date: Dec 2012 Location: Shelton	Hi, I'm having a similar issue. Did you find the answer?

Dec 9th, 2012, 15:53	#3
Harry S Harry S Last Online: Sep 2nd, 2022 22:09 Join Date: Apr 2012 Location: Pretoria, South Africa	I have thought of replacing the fuel pressure regulator. It is very possible that could be the problem. I will post my finding as soon ad i have done so.

Jan 2nd, 2013, 20:36	#4
Harry S Harry S Last Online: Sep 2nd, 2022 22:09 Join Date: Apr 2012 Location: Pretoria, South Africa	I have replaced the fuel pressure regulator and all idling, starting, etc issues have now come to an end. She idles smoother than she ever has and she starts within 2 seconds.

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