D5 engine idle speed

Volvo v70 · May 5th, 2009, 19:09

Hi , my 2003 v70 d5 auto seems to have a high idle speed [ 1200 RPM }. Is this the right speed, or am I right in thinking that it is to high ?. If it is what should it be, and is it adjustable ? .

Thanks

Georgey dee · May 5th, 2009, 19:47

1200RPM!!

That is high. I think the Idle control valve may be stuck.

Clan · May 5th, 2009, 19:50

The idle speed is supposed to be 750 rpm , does it sound fast or could it be a false indication on the Tachometer ? There is no way to adjust it so i would say it was right ..

Volvo v70 · May 5th, 2009, 20:49

Yes it is showing 1200 on the taco . Were is the idle control valve on the engine ? . Maybe it needs a clean.

Clan · May 5th, 2009, 20:53

D5's dont have idle control valves , Diesel's power and idle speed are directly controled by the amount of fuel injected .The ECU controls this by monitoring the idle speed and acting accordingly .
It may be showing 1200 but is the engine actualy doing 1200? there is a noticable difference in sound between 750 rpm and 1200 rpm ...

hobbyhorse · May 5th, 2009, 20:57

Quote:

Originally Posted by Volvo v70

Yes it is showing 1200 on the taco . Were is the idle control valve on the engine ? . Maybe it needs a clean.

You've missed Clan's point - the idle is (digitally) electronically controlled there are no adjustments. The instrument cluster is probably telling porkies,check that first, they are a common failure

Bernard333 · May 6th, 2009, 01:42

I changed the battery on my V70 D5 meaning to give the temporary battery some useage for a couple of weeks , the battery was virtually flat and I had to bump start the car ( I know this is bad for the cat and various other bits ) , eventually the car started but the dim and the electrics went mad for about 100 miles , cruise control failed and the idle stuck around 1200 rpm when up to that point had always been a steady 700. Switching the engine off and key removed the tacho still showed about 500 rpm and the engine was definitely off . After a number of restarts and 100 miles motoring its all reset itself and the idle is now 700 and cruise working , I wont take this risk again , if I had damaged just one item such as radio / cruise or dim it would have cost far more than for a new battery but I put all this down to the initial low voltage the electronics was trying to cope with or possibly the alternator output voltage was too high for the regulation to get it down to the correct voltage without the help of the battery just for those few seconds when there was no battery voltage , maybe you have a similar problem with voltage regulation ?

Volvo v70 · May 6th, 2009, 10:15

Yes it dose seem to be reving at about 1200 rpm . When it goes for its 72000 mile service I will get them to have a look.

Volvo v70 · May 6th, 2009, 10:18

Sorry, the battery volts are ok .

May 5th, 2009, 19:09	#1
Volvo v70 New Member Last Online: Oct 2nd, 2010 08:46 Join Date: Mar 2009 Location: Preston	D5 engine idle speed Hi , my 2003 v70 d5 auto seems to have a high idle speed [ 1200 RPM }. Is this the right speed, or am I right in thinking that it is to high ?. If it is what should it be, and is it adjustable ? . Thanks

May 5th, 2009, 19:47	#2
Georgey dee Premier Member Last Online: Feb 14th, 2024 18:36 Join Date: Dec 2005 Location: Norwich View Photos By: Georgey dee	1200RPM!! That is high. I think the Idle control valve may be stuck. __________________ HAD; 440 GLT(Loved it), 850 GLT auto(Loved it), S70 2.5T(Nothing but problems!), 850R auto(Loved it!!), S60 D5 SE (Nothing but problems!) GOT; S60 D5 SE Lux Auto RAF Marham Track Day Co-Ord'

May 5th, 2009, 19:50	#3
Clan Experienced Member Last Online: Today 13:59 Join Date: Jun 2007 Location: L/H side	The idle speed is supposed to be 750 rpm , does it sound fast or could it be a false indication on the Tachometer ? There is no way to adjust it so i would say it was right .. __________________ My comments are only based on my opinions and vast experience .

May 5th, 2009, 20:53	#5
Clan Experienced Member Last Online: Today 13:59 Join Date: Jun 2007 Location: L/H side	D5's dont have idle control valves , Diesel's power and idle speed are directly controled by the amount of fuel injected .The ECU controls this by monitoring the idle speed and acting accordingly . It may be showing 1200 but is the engine actualy doing 1200? there is a noticable difference in sound between 750 rpm and 1200 rpm ... __________________ My comments are only based on my opinions and vast experience .

May 5th, 2009, 20:49	#4
Volvo v70 New Member Last Online: Oct 2nd, 2010 08:46 Join Date: Mar 2009 Location: Preston	Yes it is showing 1200 on the taco . Were is the idle control valve on the engine ? . Maybe it needs a clean.

May 6th, 2009, 01:42	#7
Bernard333 Premier Member Last Online: Oct 20th, 2021 11:41 Join Date: Nov 2007 Location: Ramelton	I changed the battery on my V70 D5 meaning to give the temporary battery some useage for a couple of weeks , the battery was virtually flat and I had to bump start the car ( I know this is bad for the cat and various other bits ) , eventually the car started but the dim and the electrics went mad for about 100 miles , cruise control failed and the idle stuck around 1200 rpm when up to that point had always been a steady 700. Switching the engine off and key removed the tacho still showed about 500 rpm and the engine was definitely off . After a number of restarts and 100 miles motoring its all reset itself and the idle is now 700 and cruise working , I wont take this risk again , if I had damaged just one item such as radio / cruise or dim it would have cost far more than for a new battery but I put all this down to the initial low voltage the electronics was trying to cope with or possibly the alternator output voltage was too high for the regulation to get it down to the correct voltage without the help of the battery just for those few seconds when there was no battery voltage , maybe you have a similar problem with voltage regulation ?

May 6th, 2009, 10:15	#8
Volvo v70 New Member Last Online: Oct 2nd, 2010 08:46 Join Date: Mar 2009 Location: Preston	Yes it dose seem to be reving at about 1200 rpm . When it goes for its 72000 mile service I will get them to have a look.

May 6th, 2009, 10:18	#9
Volvo v70 New Member Last Online: Oct 2nd, 2010 08:46 Join Date: Mar 2009 Location: Preston	Sorry, the battery volts are ok .

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