Engine: D5: - Car protecing itself when cold?

Speedy · Jul 19th, 2011, 16:23

I went out yesterday and joined the roundabout approx 300m from when the car was started cold at work. I had to give it a "bit of acceleration" as the car approaching was going a bit faster than I thought. The "engine service required" message came on and there was no acceleration at all for about 100m then it picked up. Subsequently on the return trip only a mile away it was fine and kicked-down when I was checking............

My question is does the car protect itself by not letting you boot it when it knows all is cold.

Car is fine this morning and its never happened before.

Steve.

altajeli · Jul 19th, 2011, 16:54

no! would suggest the fuel filter needs changing.

lamlash · Jul 19th, 2011, 19:22

fuel filter, maybe...or it could be loads of other things. You need to go to a dealer or Volvo specialist who can read the trouble codes. Don't waste your money by randomly replacing parts.

Vaho · Jul 20th, 2011, 07:08

it is certainly not selfprotection of the car. It is an error. Type in the search box "engine service required" and you will recieve loads of answers. It can be fuel filter, air leak (hoses, intercooler), vacuum or various sensors problem or the most expensive - turbo failure. It is also known that Volvo dealers can not usually pin point the exact cause of the error code and let you change unnecessary and expensive parts so be cautious.
In my case the error code was caused by the engine pads, they were worn and didn´t hold any vacuum. Volvo specialist could not diagnose the engine pad failure, hell, they didn´t even know the working pinciple of the pads. I got help from this forum and did my own vacuum leak test.

Thassos · Jul 20th, 2011, 09:30

Always useful to know !

steptoe_69 · Jul 20th, 2011, 10:07

Where in the car are the engine pads?.

Vaho · Jul 20th, 2011, 10:40

there are 2 vacuum controlled engine pads/mounts, one in front and one in back of the engine. You can see the front pad when you stay in front of the engine and look down, the vacuum hose is also attached to it.

Thassos · Jul 20th, 2011, 16:05

As Vaho says, there are 2 of these vaccum mounts, below 1000rpm no vaccum is applied and the mount is softer, above 1000 rpm the vaccum is applied and the mount hardens up, so when your idling you get minimum engine vibration through the subframe.

Jul 19th, 2011, 16:23	#1
Speedy Senior Member Last Online: Oct 19th, 2013 20:42 Join Date: Jun 2009 Location: Warminster, Wiltshire.	Car protecing itself when cold? I went out yesterday and joined the roundabout approx 300m from when the car was started cold at work. I had to give it a "bit of acceleration" as the car approaching was going a bit faster than I thought. The "engine service required" message came on and there was no acceleration at all for about 100m then it picked up. Subsequently on the return trip only a mile away it was fine and kicked-down when I was checking............ My question is does the car protect itself by not letting you boot it when it knows all is cold. Car is fine this morning and its never happened before. Steve.

Jul 20th, 2011, 07:08	#4
Vaho New Member Last Online: Sep 30th, 2014 13:55 Join Date: Jul 2010 Location: Tallinn	it is certainly not selfprotection of the car. It is an error. Type in the search box "engine service required" and you will recieve loads of answers. It can be fuel filter, air leak (hoses, intercooler), vacuum or various sensors problem or the most expensive - turbo failure. It is also known that Volvo dealers can not usually pin point the exact cause of the error code and let you change unnecessary and expensive parts so be cautious. In my case the error code was caused by the engine pads, they were worn and didn´t hold any vacuum. Volvo specialist could not diagnose the engine pad failure, hell, they didn´t even know the working pinciple of the pads. I got help from this forum and did my own vacuum leak test. __________________ S80, 2,4D, 96KW, 11/2004

Jul 20th, 2011, 09:30	#5
Thassos GoldMember Last Online: Apr 25th, 2024 22:46 Join Date: Jul 2010 Location: Kent, UK	What engine type is it? Always useful to know !

Jul 20th, 2011, 10:07	#6
steptoe_69 Member Last Online: Apr 4th, 2014 00:06 Join Date: Jul 2009 Location: Dromore, N.Ireland	Where in the car are the engine pads?. __________________ shoulda seen me hammerin round that field in me tractor, keepin er lit!

Jul 20th, 2011, 10:40	#7
Vaho New Member Last Online: Sep 30th, 2014 13:55 Join Date: Jul 2010 Location: Tallinn	there are 2 vacuum controlled engine pads/mounts, one in front and one in back of the engine. You can see the front pad when you stay in front of the engine and look down, the vacuum hose is also attached to it. __________________ S80, 2,4D, 96KW, 11/2004

Jul 19th, 2011, 16:54	#2
altajeli Member Last Online: Mar 6th, 2012 21:55 Join Date: Jun 2010 Location: essex	no! would suggest the fuel filter needs changing.

Jul 19th, 2011, 19:22	#3
lamlash Junior Member Last Online: May 4th, 2015 20:21 Join Date: Mar 2010 Location: newcastle	fuel filter, maybe...or it could be loads of other things. You need to go to a dealer or Volvo specialist who can read the trouble codes. Don't waste your money by randomly replacing parts.

Jul 20th, 2011, 16:05	#8
Thassos GoldMember Last Online: Apr 25th, 2024 22:46 Join Date: Jul 2010 Location: Kent, UK	How they work As Vaho says, there are 2 of these vaccum mounts, below 1000rpm no vaccum is applied and the mount is softer, above 1000 rpm the vaccum is applied and the mount hardens up, so when your idling you get minimum engine vibration through the subframe.

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