S80: Electrical - Cold start electrical problem

urban60 · Dec 16th, 2019, 07:17

I own a Volvo s80 2.4d 2009 (with 300.000 km) and since the weather got colder I noticed weird behavior on cold starts. I've noticed that this happens every time the car is cold and at cca. 1°C and below. When I push the start button, engine starts with no problem whatsoever and turns on at about 750 RPM. What is weird is, that at that time (aprox. 2 seconds) radio and lights (and probably other stuff) is not working and only turns on after that 2 seconds. The engine sound is also weird. Then, after 2 seconds everything comes on and also the engine RPM gets higher to 1200 RPM and the sound "becomes" normal.
I've changed the car battery and only codes I get are the bad nr. 2 and nr. 3 glow plugs, but I suppose this shouldn't be the problem. Any thoughts?

cheshired5 · Dec 16th, 2019, 13:52

Quote:

Originally Posted by urban60

only codes I get are the bad nr. 2 and nr. 3 glow plugs, but I suppose this shouldn't be the problem. Any thoughts?

Make sure all glow plugs are working then report back.

urban60 · Dec 24th, 2019, 08:47

So I've changed timing and serpentine belt, water pump, coolant liquid, glow plugs (all of them), all the pulleys and tensioners, but the problem still seems to exist. Sorry that I didn't come back earlier, but the weather here was extremely warm (10°C) and today was the first cold day after that (-1°C).

cheshired5 · Dec 31st, 2019, 12:56

When was the fuel filter last changed and what make was fitted?

ShadeTek · Jan 8th, 2020, 09:20

Quote:

Originally Posted by urban60

So I've changed timing and serpentine belt, water pump, coolant liquid, glow plugs (all of them), all the pulleys and tensioners, but the problem still seems to exist. Sorry that I didn't come back earlier, but the weather here was extremely warm (10°C) and today was the first cold day after that (-1°C).

I think you need to do some diagnostics and troubleshooting instaed of throwing a lot of parts at the problem. I would start with checking the battery voltage is ok, first thing in the morning and then see if there are any codes logged.

Clan · Jan 8th, 2020, 10:53

Quote:

Originally Posted by urban60

So I've changed timing and serpentine belt, water pump, coolant liquid, glow plugs (all of them), all the pulleys and tensioners, but the problem still seems to exist. Sorry that I didn't come back earlier, but the weather here was extremely warm (10°C) and today was the first cold day after that (-1°C).

why did you change the perfectly good water pump? I hope you used a genuine volvo one or you will have a nasty shock in the foreseeable future ...

Dec 16th, 2019, 07:17	#1
urban60 Junior Member Last Online: Mar 22nd, 2024 10:05 Join Date: Sep 2017 Location: MS	Cold start electrical problem I own a Volvo s80 2.4d 2009 (with 300.000 km) and since the weather got colder I noticed weird behavior on cold starts. I've noticed that this happens every time the car is cold and at cca. 1°C and below. When I push the start button, engine starts with no problem whatsoever and turns on at about 750 RPM. What is weird is, that at that time (aprox. 2 seconds) radio and lights (and probably other stuff) is not working and only turns on after that 2 seconds. The engine sound is also weird. Then, after 2 seconds everything comes on and also the engine RPM gets higher to 1200 RPM and the sound "becomes" normal. I've changed the car battery and only codes I get are the bad nr. 2 and nr. 3 glow plugs, but I suppose this shouldn't be the problem. Any thoughts?

Dec 31st, 2019, 12:56	#4
cheshired5 Premier Member Last Online: Dec 26th, 2021 13:42 Join Date: Dec 2013 Location: Crewe	When was the fuel filter last changed and what make was fitted? __________________ 2002 S60 SE D5 Manual 209000 miles

Dec 24th, 2019, 08:47	#3
urban60 Junior Member Last Online: Mar 22nd, 2024 10:05 Join Date: Sep 2017 Location: MS	So I've changed timing and serpentine belt, water pump, coolant liquid, glow plugs (all of them), all the pulleys and tensioners, but the problem still seems to exist. Sorry that I didn't come back earlier, but the weather here was extremely warm (10°C) and today was the first cold day after that (-1°C).

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