XC70: Engine - Intermittent

Staghound · Jan 11th, 2018, 14:43

Hello I own a 2005 XC70 200,000 miles lovely car. Just started having intermittent red triangle warning light car dies. my local volvo garage are foxed does anyone have any ideas? They kindly wrote an email to me.
We have fitted a used injection pump today and two reconditioned injectors to test from a vehicle we know not to have any known faults. Our first attempt to road test the vehicle got to the first roundabout before going into limp mode. We returned the vehicle and checked the repairs with no fault found so cleared fault codes. We then took out for second road test but again vehicle lost power before entering second roundabout. There is a permanent fault code for ECM-2505 FUEL PRESSURE – TOO LOW PRESSURE also ECM-1300 MASS AIR FLOW SENSOR SIGNAL- SIGNAL TOO HIGH.

Compression test on cylinders Result: Passed.

Parameter/ Fuel quantity correction cylinder 5 33.86mm3
Parameter/ Fuel quantity correction cylinder 4 0mm3
Parameter/ Fuel quantity correction cylinder 3 6.14mm3
Parameter/ Fuel quantity correction cylinder 2 5.23mm3
Parameter/ Fuel quantity correction cylinder 1 7.06mm3

Without replacing the injection pump, injectors, control module and fault tracing through the whole fuel system and network we can not confirm source of fault.

Joe Harding · Jan 11th, 2018, 17:27

MAF sensor? What figures are being read?

Staghound · Jan 11th, 2018, 17:42

Thank you Joe,
The MAF is described as showing readings between parameters.

Simon Jones · Jan 11th, 2018, 17:59

You've posted in the 2007 onwards section. A kind moderator will probably be along to move it shortly, but in the meantime, the correct section can be found here: https://www.volvoforums.org.uk/forumdisplay.php?f=19

It's always worth mentioning what engine you have as there are several variants. I would guess its a diesel engine but I could be wrong. Any history to this fault? Has it always done this or is it something that has developed, perhaps as a result of some other event that occurred.

Staghound · Jan 12th, 2018, 02:07

Many thanks Simon.

Model flyer · Jan 12th, 2018, 09:12

Re the low fuel pressure warning. Has the fuel filter been changed / checked ? I know a garage should check this first but it has been overlooked before and will give symptoms you describe . Also the low pressure pump in the tank can also fail giving similar symptoms

Staghound · Jan 12th, 2018, 11:12

hi thank you. Both the fuel filter and pump have been replaced hoses checked for crimps all ok.

Jan 11th, 2018, 14:43	#1
Staghound New Member Last Online: Jan 12th, 2018 11:12 Join Date: Oct 2015 Location: Taunton	Intermittent Hello I own a 2005 XC70 200,000 miles lovely car. Just started having intermittent red triangle warning light car dies. my local volvo garage are foxed does anyone have any ideas? They kindly wrote an email to me. We have fitted a used injection pump today and two reconditioned injectors to test from a vehicle we know not to have any known faults. Our first attempt to road test the vehicle got to the first roundabout before going into limp mode. We returned the vehicle and checked the repairs with no fault found so cleared fault codes. We then took out for second road test but again vehicle lost power before entering second roundabout. There is a permanent fault code for ECM-2505 FUEL PRESSURE – TOO LOW PRESSURE also ECM-1300 MASS AIR FLOW SENSOR SIGNAL- SIGNAL TOO HIGH. Compression test on cylinders Result: Passed. Parameter/ Fuel quantity correction cylinder 5 33.86mm3 Parameter/ Fuel quantity correction cylinder 4 0mm3 Parameter/ Fuel quantity correction cylinder 3 6.14mm3 Parameter/ Fuel quantity correction cylinder 2 5.23mm3 Parameter/ Fuel quantity correction cylinder 1 7.06mm3 Without replacing the injection pump, injectors, control module and fault tracing through the whole fuel system and network we can not confirm source of fault.

Jan 11th, 2018, 17:27	#2
Joe Harding Premier Member Last Online: Today 14:27 Join Date: Oct 2010 Location: Bristol	MAF sensor? What figures are being read? __________________ "The more people I meet the more I like my God."

Jan 11th, 2018, 17:42	#3
Staghound New Member Last Online: Jan 12th, 2018 11:12 Join Date: Oct 2015 Location: Taunton	intermittent Thank you Joe, The MAF is described as showing readings between parameters.

Jan 11th, 2018, 17:59	#4
Simon Jones Premier Member Last Online: Jan 15th, 2022 11:23 Join Date: Feb 2009 Location: Salisbury (ish)	You've posted in the 2007 onwards section. A kind moderator will probably be along to move it shortly, but in the meantime, the correct section can be found here: https://www.volvoforums.org.uk/forumdisplay.php?f=19 It's always worth mentioning what engine you have as there are several variants. I would guess its a diesel engine but I could be wrong. Any history to this fault? Has it always done this or is it something that has developed, perhaps as a result of some other event that occurred. __________________ 2008 XC70 3.2 SE Lux with LPG conversion - current 2005 XC70 D5 SE Lux - sold 2004 XC70 D5 SE Lux - written off by another XC70 2001 V70 D5 - sold 2000 V70 Classic 2.4 - sold

Jan 12th, 2018, 09:12	#6
Model flyer Master Member Last Online: Dec 15th, 2023 18:46 Join Date: Jan 2006 Location: Kent,pothole capital of UK.	Re the low fuel pressure warning. Has the fuel filter been changed / checked ? I know a garage should check this first but it has been overlooked before and will give symptoms you describe . Also the low pressure pump in the tank can also fail giving similar symptoms __________________ The secret of flight is to aim at the ground and miss ! Previous Volvos 740 GLE . V40 CD ,V70 2.4 SE LPT.V70 D5 P2. V70 D5 Se Lux P3. Current Jaguar XF Sportbrake but still like Volvos

Jan 12th, 2018, 02:07	#5
Staghound New Member Last Online: Jan 12th, 2018 11:12 Join Date: Oct 2015 Location: Taunton	Many thanks Simon.

Jan 12th, 2018, 11:12	#7
Staghound New Member Last Online: Jan 12th, 2018 11:12 Join Date: Oct 2015 Location: Taunton	hi thank you. Both the fuel filter and pump have been replaced hoses checked for crimps all ok.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)