V40 rough idle and high fuel consumption
- Thread starter ChrisD.
- Start date
Look for an idie garage with a proper code reader, the generic hand held ones dont always pick up manufacturer specific codes.
The volvo forum should be able to tell you a local indie, you can probably get the codes read for less than half what volvo will charge, or you may find a friendly member localy who has the right hardware to read codes properly.
Official volvo garages charge silly money for labour, about £80 per hour iirc.
Firstly however I would probably starrt a thread on the forum, in the relevant section, it may well be a known/common issue for that engine... youll certainly get some advise as to what you can check youself to rule certain things out..
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Soldato
Rough idle and high fuel use could be a lot of things 
GDIs tend to suffer from sooted up intake manifolds/ports (because the fuel bypasses the ports straight into the cylinder) and throttle body so it might be worth having a quick look there.
GDIs tend to suffer from sooted up intake manifolds/ports (because the fuel bypasses the ports straight into the cylinder) and throttle body so it might be worth having a quick look there.
Man of Honour
Reading fault codes from these age Volvos requires hardware that most Indys don't have. I think this will be a dealer job.
Soldato
Just repaired a friends 2001 V40 1.8 with the same symptoms. I simple pulled the coil packs and HT leads out (they have two coil packs which connect directly to the plug and then have two leads which go to the other two plugs), cleaned up the contacts and put it all back together - no more misfire 
Soldato
you'll need a specialist for sure. VIDA is the software you want them to use. No independant Volvo specialist will be without it.
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I'll call the independent gain today. He seemed well clued up on the engine as well. Did a search on the garage and could only find one old thread on one of the Volvo forums saying he's excellent.
Fishers Gloucester Volvo Specialists
Considering I'm staying in Gloucester now it's quite handy.
Fishers Gloucester Volvo Specialists
Considering I'm staying in Gloucester now it's quite handy.
Well the EML came on this morning so I guess there's a code that can be read now which is a good thing. My GF is on her way to Gloucester from Watford right now with my code reader. She was coming this way due to going to Bristol tomorrow which is handy. Only problem is the Volvo specialist is only open till 5 so I've no hope of making it after work. Plus it's not open on Saturdays so I may have to go back to Watford and try the one there and see if it's open.
She was coming this way due to going to Bristol tomorrow which is handy. Only problem is the Volvo specialist is only open till 5 so I've no hope of making it after work. Plus it's not open on Saturdays so I may have to go back to Watford and try the one there and see if it's open.Ah man, what a day. Car dumped all coolant on the way to work. Managed to get it to a decent garage without the HG going so a lucky escape. Basically one of the hoses had come away from its mounting which and was resting against a pulley.
Anyway, turns out the fault is a a coil pack, new one should be fitted tomorrow hopefully.
Managed to get it to a decent garage without the HG going so a lucky escape. Basically one of the hoses had come away from its mounting which and was resting against a pulley.Anyway, turns out the fault is a a coil pack, new one should be fitted tomorrow hopefully.
Caporegime
Are they doing the usual replace stuff until it works or you take it elsewhere?
How do you mean?
Initially they disconnected the coilpack and the fault remained hence they suspected it faulty. New one was fitted and no difference so now they have done a compression test to eliminate valves and started looking at fuelling. Seems the injector is getting voltage but isn't pulsing.
Initially they disconnected the coilpack and the fault remained hence they suspected it faulty. New one was fitted and no difference so now they have done a compression test to eliminate valves and started looking at fuelling. Seems the injector is getting voltage but isn't pulsing.
That's "fuel trim malfunction, bank 1" > according to my book, and dunno what it means really, although it doesn't suggest coil pack, so dunno why they're replacedthat