440 1.8i fuel consumption down, running rough - Page 3

B20F · Jan 14th, 2010, 16:09

Quote:

or can i drive around indefinitely like this?

Yes you can. It's to prevent petrol damps from the tank entering the environment. So you polute a bit more while you drive around with the cannister plugged off.
I must say that I'm more inclined to a bad steppenmotor/throttle valve sensor which is causing the problems. But maybe I'm wrong, it's easy to plug off the cannister so give it a try.

twomo · Jan 14th, 2010, 23:30

Nice one, thanks again B20F. In the end today I came across another local garage on the VOC "members recommend" list (Jim Litchfield). Apparently they know what they're doing with Volvos, so I bounced the 440 over there and left it with them. We'll see what they say tomorrow...

vicpool · Jan 21st, 2010, 10:59

I had similar trouble. 25 to the gallon and lumpy running. This turned out to be two faults already mentioned. The inlet manifold gasket was leaking. This gave lumpy running. This is not an easy job, I'm afraid I chickened out and let the garage boys do this one. The fuel consumption increase was caused by the duff lambda sensor. This was shown up by emissions test failure. Incidentally neither the lambda indicator light nor the diagnostics showed this fault so beware!

440anator · Jan 21st, 2010, 12:28

Currently i feel like kangarooing down to B&Q to get a large sledgehammer and chainsaw...[/QUOTE]

Dont you mean a large Angle Grinder

440_IOW · Feb 27th, 2010, 20:57

hi
this a very useful thread, thanks.
mother in law is having the same prob with her 1995 440 xi,
running very lumpy, poor mpg. i've replaced plugs, dist cap & rotor arm, plugs, ht leads with no improvement! i'll check out vacuum hoses etc tomorrow in the hope i find perished rubber!
cheers
mark

Jan 21st, 2010, 12:28	#24
440anator rookie Last Online: Apr 29th, 2015 18:57 Join Date: Apr 2009 Location: n ireland =] is be wer it at	Currently i feel like kangarooing down to B&Q to get a large sledgehammer and chainsaw...[/QUOTE] Dont you mean a large Angle Grinder __________________ Have you ever seen a Volvo with tha butterfly doors

Feb 27th, 2010, 20:57	#25
440_IOW New Member Last Online: Feb 27th, 2010 21:04 Join Date: Feb 2010 Location: Isle of Wight	hi this a very useful thread, thanks. mother in law is having the same prob with her 1995 440 xi, running very lumpy, poor mpg. i've replaced plugs, dist cap & rotor arm, plugs, ht leads with no improvement! i'll check out vacuum hoses etc tomorrow in the hope i find perished rubber! cheers mark Last edited by 440_IOW; Feb 27th, 2010 at 21:01. Reason: incorrect thread quoted

Jan 14th, 2010, 23:30	#22
twomo New Member Last Online: Mar 5th, 2010 00:29 Join Date: Dec 2009 Location: Tunbridge Wells	Nice one, thanks again B20F. In the end today I came across another local garage on the VOC "members recommend" list (Jim Litchfield). Apparently they know what they're doing with Volvos, so I bounced the 440 over there and left it with them. We'll see what they say tomorrow...

Jan 21st, 2010, 10:59	#23
vicpool New Member Last Online: Jan 4th, 2018 12:08 Join Date: Nov 2008 Location: Ashford Middx	I had similar trouble. 25 to the gallon and lumpy running. This turned out to be two faults already mentioned. The inlet manifold gasket was leaking. This gave lumpy running. This is not an easy job, I'm afraid I chickened out and let the garage boys do this one. The fuel consumption increase was caused by the duff lambda sensor. This was shown up by emissions test failure. Incidentally neither the lambda indicator light nor the diagnostics showed this fault so beware!

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