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JT
Sunday 2nd June 2013, 12:32
Hi all

I have problems........with the black 850, lol

It was running fine on Friday,filled her up with tescos best and put a detox/cleaner in it.
On the way to Brooklands yesterday,I noticed it was starting to cough a bit at 3500 rpm
this got gradually worse,to a point where I had to pull over and check something hadn't come off.
Didnt find anything.

Limped on to Brooklands and we only just got there at which point the lambda light had come on.
When we went to leave it wouldnt start and when it finally did,it was really rough.
I couldn't really touch the throttle as it would cough and splutter really badly,hence to say the drive
home was not much fun.

So today I have changed:

fuel filter
all 5 injectors
fuel rail
fuel reg
IDC
MAF
Lambda sensor
ECU

all with no joy:(

any ideas anyone?
what have I missed?

cheers
JT

Nealevo
Sunday 2nd June 2013, 12:44
Cat blocked???? I've had this on another car same issues???

JT
Sunday 2nd June 2013, 12:49
really?

oh crap:(

cheers Neal

p fandango
Sunday 2nd June 2013, 12:52
Have u read the engine codes?

JT
Sunday 2nd June 2013, 12:56
Have u read the engine codes?

Black has the OBD 2 port
I dont have a reader for that

p fandango
Sunday 2nd June 2013, 13:10
Black has the OBD 2 port
I dont have a reader for that
https://www.box.com/shared/oy63haaef2

JT
Sunday 2nd June 2013, 13:27
https://www.box.com/shared/oy63haaef2

yea right! lol

isnt there a proper code reader flying about on this forum somewhere??

oblark
Sunday 2nd June 2013, 13:46
Try some fresh fuel :)

JT
Sunday 2nd June 2013, 13:51
Try some fresh fuel :)

I have thought of that Rob,but with 3/4 of a tank in there,not sure I want to waste all that! lol
but I might top it up with fresh stuff and see what happens

Tomcat
Sunday 2nd June 2013, 13:54
Think I'd get the codes read, then if that doesnt bring up anything I'd drain the tank and try some fresh stuff. You didn't put too much cleaner in it did you?, sounds coincidental that it started playing up shortly after you filled up. What colour was the sparks plugs and the lambda when you pulled them?..

stribo
Sunday 2nd June 2013, 13:57
Have you checkedf the ignition side? Could be coil, rotor arm, dizzy cap.

JT
Sunday 2nd June 2013, 14:01
Have you checkedf the ignition side? Could be coil, rotor arm, dizzy cap.

well when it starts, it will tick over like normal,so I think they are all ok,
its only when I touch the throttle it seems to choke itself and the point of the Lambda light is up,makes me think Neal could well be right

I did check all the leads etc were where they should be,but I havent replaced any..........yet

stribo
Sunday 2nd June 2013, 14:08
Before I changed my plugs, leads etc. mine would start fine and run fine when cold, but once warmed up if put under any load would misfire badly, although it would run fine on part throttle. As has been said above though it could be the cat.

timbo
Sunday 2nd June 2013, 14:12
This bloke (ripsta33) used to sell the code readers on eBay for £14.99, don't know if he's got any left??

http://www.volvoforums.org.uk/member.php?u=16551

claymore
Sunday 2nd June 2013, 14:46
Mine used to do that, changed the plugs an all was perfect.

WOODY T5
Sunday 2nd June 2013, 15:04
Idle con valve !

JT
Sunday 2nd June 2013, 19:48
thanks for all the input

I will change plugs n leads tomorrow
fingers crossed

p fandango
Sunday 2nd June 2013, 19:51
I will change plugs n leads tomorrow
fingers crossed
hows the missus going to get to work? lol

JT
Sunday 2nd June 2013, 20:06
hows the missus going to get to work? lol

I would rather walk than drive her 1st option! lol

merc85
Sunday 2nd June 2013, 20:13
Split intercooler hose perhaps bud? will flag a light due to runing lean, check your boost hoses and intercooler buddy

JT
Sunday 2nd June 2013, 20:21
Split intercooler hose perhaps bud? will flag a light due to runing lean, check your boost hoses and intercooler buddy

boost hoses are new, but i checked them anyway,I will need to remove the IC to check that, maybe another job for tomorrow

thanks

glock19
Monday 3rd June 2013, 04:57
Did you check your fuel pump ?
It's not broken (since you can start it) but the petrol hose inside could have shrunk & leak back into the tank, and the motor feeding fuel to the upper (fuel pump) casing is then not getting enough.

smithy
Monday 3rd June 2013, 10:20
Was the car running fine before you fueled up .

JT
Monday 3rd June 2013, 17:24
Did you check your fuel pump ?
It's not broken (since you can start it) but the petrol hose inside could have shrunk & leak back into the tank, and the motor feeding fuel to the upper (fuel pump) casing is then not getting enough.

I will check, but only fitted it a few weeks back


Was the car running fine before you fueled up .

It wasn't 100%,hence why I changed the fuel pump,but it was certainly alot better than it is now! lol

PHIL V70R
Monday 3rd June 2013, 22:25
what about water temp sensor...:ukliam2:

JT
Tuesday 4th June 2013, 17:39
ok,now changed:

plugs
leads
dizzy cap
rotor


problem still here:(

add coil to that list,still no good:)

smithy
Tuesday 4th June 2013, 17:49
ok,now changed:

plugs
leads
dizzy cap
rotor


problem still here:(

add coil to that list,still no good:)

Sounds lie crap fuel to me but check pressure on fuel rail too.

JT
Tuesday 4th June 2013, 17:51
Sounds lie crap fuel to me but check pressure on fuel rail too.

it stinks of fuel,I'm sure thats not the problem, but maybe the cleaner is too strong and messed it all up.:(

smithy
Tuesday 4th June 2013, 17:56
it stinks of fuel,I'm sure thats not the problem, but maybe the cleaner is too strong and messed it all up.:(

Have you tried another maf

JT
Tuesday 4th June 2013, 18:09
Have you tried another maf

Yes, was first on the list

JT
Saturday 8th June 2013, 10:33
Did you check your fuel pump ?
It's not broken (since you can start it) but the petrol hose inside could have shrunk & leak back into the tank, and the motor feeding fuel to the upper (fuel pump) casing is then not getting enough.


10 points to you! :)

the hose hadnt shrunk, but actually come off!!!

I just need to swap everything back as it was and go for a test drive:)

cheers

JT

V70 Graham
Saturday 8th June 2013, 11:36
Good news, hopefully all sorted.....and a cheap fix to boot !

JT
Saturday 8th June 2013, 12:13
yea, all seems fine,have left most of the stuff on that I swapped to be honest,
found a coroded lead and the rotor arm looked like it had seen better days too.

lambda light still on though?