480 es slugish when cold

Mar 3rd, 2006, 05:07

hi i have 92k plate 480 es, when the car is cold its very slugish and the engine has no pull, also when it becomes warm the cat rattels and tickover is anywhere between 700 and 1000 rpm. it passed mot ok and info centre tells me im still getting 35+ mpg most of the time. anyone any ideas?

Mar 3rd, 2006, 19:29

May or may not be the same but I had a Cavalier a while a go with similar problem when cold but ran fine when warmed up, it turned out to be the back box on the exhaust! The baffles inside had rotted and was blocking gasses a bit but it looked ok from the outside. Replaced it with a new one and problem solved. Give the back box a shake to see if you can hear anything. Just a suggestion like I say but that was the problem with that car.

Mar 4th, 2006, 06:00

funny you should say that but is seems louder than usual, always plenty of condensation on cold mornings though, thanks for the idea ill get it checked out.

Mar 6th, 2006, 04:00

it has got to the point now where it wont rev over 4000 it just missfires caughs and splutters. im at a loss

Mar 6th, 2006, 09:07

Could be the ECU has gone into "limp mode" as something else has failed. I hate to send you elsewhere but you may find more answers here: http://volvo480.dragons.org.uk/forum/index.php
Do a search and you may find the answer without having to post maybe? It's a good forum (just like this one)

But just for 480's.
Hope this helps.

donpaulo · Mar 6th, 2006, 12:00

have you checked the spark plug leads? If not, park up somewhere dark, lift the bonnet and look for "leaking" sparks, should be pretty obvious. Just one of many possibilities

doomvolvo · Mar 6th, 2006, 14:06

My 440 2.0 is currently suffering a similar thing. It pulls ok when cold but when it gets to around 3500rpm the engine gives up all power then I get BIG dollops of power if I keep trying to accelerate. Once above 4500rpm it all goes back to normal.

Mar 7th, 2006, 09:32

It could be the fuellines wich has clogged..it could be the airfilter, on my 850 glt a rat had build a nest inside my airbox...so it had absolutely no power at high revs..sounds weird and i got my self a real surprise when i was going to clean my filter

Mar 11th, 2006, 05:54

hi thanks for the ideas took car to my local garage and have had fault codes read seems its the throttle positioning sensor. having new one fitted monday so will let you know if it solves the problem

Mar 13th, 2006, 14:24

it seems that after all it was a blocked cat, had the insides of cat knocked out and it goes like stink again.

Mar 3rd, 2006, 05:07	#1
v6dunc Guest Location:	480 es slugish when cold hi i have 92k plate 480 es, when the car is cold its very slugish and the engine has no pull, also when it becomes warm the cat rattels and tickover is anywhere between 700 and 1000 rpm. it passed mot ok and info centre tells me im still getting 35+ mpg most of the time. anyone any ideas?

Mar 4th, 2006, 06:00	#3
v6dunc Guest Location:	480 sluggish funny you should say that but is seems louder than usual, always plenty of condensation on cold mornings though, thanks for the idea ill get it checked out.

Mar 6th, 2006, 04:00	#4
v6dunc Guest Location:	sluggish 480 it has got to the point now where it wont rev over 4000 it just missfires caughs and splutters. im at a loss

Mar 6th, 2006, 14:06	#7
doomvolvo Volvo 440 2.0 Last Online: Mar 2nd, 2010 17:26 Join Date: Dec 2004 Location: Derbyshire	same problem My 440 2.0 is currently suffering a similar thing. It pulls ok when cold but when it gets to around 3500rpm the engine gives up all power then I get BIG dollops of power if I keep trying to accelerate. Once above 4500rpm it all goes back to normal. __________________ If your not living on the edge your taking up too much room

Mar 7th, 2006, 09:32	#8
diabolo_687 Guest Location:	Re: It could be the fuellines wich has clogged..it could be the airfilter, on my 850 glt a rat had build a nest inside my airbox...so it had absolutely no power at high revs..sounds weird and i got my self a real surprise when i was going to clean my filter

Mar 3rd, 2006, 19:29	#2
Denny James Guest Location:	May or may not be the same but I had a Cavalier a while a go with similar problem when cold but ran fine when warmed up, it turned out to be the back box on the exhaust! The baffles inside had rotted and was blocking gasses a bit but it looked ok from the outside. Replaced it with a new one and problem solved. Give the back box a shake to see if you can hear anything. Just a suggestion like I say but that was the problem with that car.

Mar 6th, 2006, 09:07	#5
Denny James Guest Location:	Could be the ECU has gone into "limp mode" as something else has failed. I hate to send you elsewhere but you may find more answers here: http://volvo480.dragons.org.uk/forum/index.php Do a search and you may find the answer without having to post maybe? It's a good forum (just like this one) But just for 480's. Hope this helps.

Mar 6th, 2006, 12:00	#6
donpaulo New Member Last Online: Aug 20th, 2007 10:23 Join Date: Feb 2006 Location: edinburgh	have you checked the spark plug leads? If not, park up somewhere dark, lift the bonnet and look for "leaking" sparks, should be pretty obvious. Just one of many possibilities

Mar 11th, 2006, 05:54	#9
v6dunc Guest Location:	480 sluggish hi thanks for the ideas took car to my local garage and have had fault codes read seems its the throttle positioning sensor. having new one fitted monday so will let you know if it solves the problem

Mar 13th, 2006, 14:24	#10
v6dunc Guest Location:	480 sluggish it seems that after all it was a blocked cat, had the insides of cat knocked out and it goes like stink again.

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