Idle engine speed at start-up from cold

hancym · Feb 13th, 2011, 10:49

I have recently got a 2004 T6 when I start the engine from cold the management system revs the engine at what I would call and unnecessary speed for a good 2 or 3 minutes. I assume it's supposed to do this but my question is:
Is it supposed to be running so fast?
Is this speed programmable by the Volvo dealer?

pdrvolvo · Feb 13th, 2011, 11:11

Quote:

Originally Posted by hancym

I have recently got a 2004 T6 when I start the engine from cold the management system revs the engine at what I would call and unnecessary speed for a good 2 or 3 minutes. I assume it's supposed to do this but my question is:
Is it supposed to be running so fast?
Is this speed programmable by the Volvo dealer?

Mine does exactly the same its a bit like an electronic choke it presents no problems and the revs soon drop too normal.As far as i know its perfectly normal.

peter.

400-ascona · Feb 13th, 2011, 11:26

Ours does the same. I just wait until it drops before putting into drive to give the gearbox a fighting chance.

Clan · Feb 13th, 2011, 11:28

Yes it is normal, to warm up the catalytic converters quickly and hence reduce emissions . As soon as you put it in D this is cut off so it doesnt jump into gear ...

hancym · Feb 13th, 2011, 15:07

Quote:

Originally Posted by Clan

Yes it is normal, to warm up the catalytic converters quickly and hence reduce emissions . As soon as you put it in D this is cut off so it doesnt jump into gear ...

It doesn't actually it keep going and I can drive off like it until it decides it warm enough. It can't be the gearbox as it a Volvo factory recon fitted 10k miles ago and I doub it would be a experiencing a problem.

It just seem to thrash the engine a bit too much. Could someone please tell me if this is adjustable via OBDII? If so I'd like to get it tweaked

indiebands · Feb 13th, 2011, 16:46

Quote:

Originally Posted by Clan

Yes it is normal, to warm up the catalytic converters quickly and hence reduce emissions . As soon as you put it in D this is cut off so it doesnt jump into gear ...

Is this true for the V8 as well? My new V8 exec (about 300 miles on it so far) seems to cough gutterally when starting up in the cold, almost sounding as if it is going to stall. Then after a couple of minutes it settles down into a reassuring gentle growl. Have not asked the dealer about this, but does it sound like normal engine behavior? or new engine behavior?

Thanks,
Tom

keithmcc · Feb 13th, 2011, 22:10

Yes it is specifically designed to have an increased tickover on start-up, linked to engine temperature (nothing to do with auto D - at least not on my 2008 D5).
My old V70 had a similar tick-over problem in reverse - when warmed up it was prone to stalling on 1st gear take off. That had become a 'known fault' and was fixed by a software upgrade, not a dealer tweak.

Feb 13th, 2011, 10:49	#1
hancym Master Member Last Online: Feb 25th, 2024 15:40 Join Date: Jan 2011 Location: Norwich	Idle engine speed at start-up from cold I have recently got a 2004 T6 when I start the engine from cold the management system revs the engine at what I would call and unnecessary speed for a good 2 or 3 minutes. I assume it's supposed to do this but my question is: Is it supposed to be running so fast? Is this speed programmable by the Volvo dealer?

Feb 13th, 2011, 11:26	#3
400-ascona Premier Member Last Online: Apr 19th, 2024 10:05 Join Date: Mar 2008 Location: Derby	Ours does the same. I just wait until it drops before putting into drive to give the gearbox a fighting chance. __________________ 1997 V70R AWD, Saffron, Manual; Lotus Carlton; Ascona 400; Mini Cooper S Works; 4.2 Supercharged Range Rover; Land Rover Discovery 4; Suzuki GSF1200N; BMW R80/7; Velocette Venom; Daimler V8 250.

Feb 13th, 2011, 11:28	#4
Clan Experienced Member Last Online: Yesterday 22:35 Join Date: Jun 2007 Location: L/H side	Yes it is normal, to warm up the catalytic converters quickly and hence reduce emissions . As soon as you put it in D this is cut off so it doesnt jump into gear ... __________________ My comments are only based on my opinions and vast experience .

Feb 13th, 2011, 22:10	#7
keithmcc New Member Last Online: Apr 17th, 2021 23:36 Join Date: Sep 2010 Location: ANNAN	Yes it is specifically designed to have an increased tickover on start-up, linked to engine temperature (nothing to do with auto D - at least not on my 2008 D5). My old V70 had a similar tick-over problem in reverse - when warmed up it was prone to stalling on 1st gear take off. That had become a 'known fault' and was fixed by a software upgrade, not a dealer tweak.

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