running issues

Post 612883 by JT on 2013-06-02 12:32:24

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

Post 612885 by Nealevo on 2013-06-02 12:44:29

Cat blocked???? I've had this on another car same issues???

Post 612886 by JT on 2013-06-02 12:49:18

really? oh crap:( cheers Neal

Post 612887 by p fandango on 2013-06-02 12:52:33

Have u read the engine codes?

Post 612889 by JT on 2013-06-02 12:56:13

[QUOTE=p fandango;612887]Have u read the engine codes?[/QUOTE] Black has the OBD 2 port I dont have a reader for that

Post 612891 by p fandango on 2013-06-02 13:10:35

[QUOTE=JT;612889]Black has the OBD 2 port I dont have a reader for that[/QUOTE] https://www.box.com/shared/oy63haaef2

Post 612896 by JT on 2013-06-02 13:27:43

[QUOTE=p fandango;612891]https://www.box.com/shared/oy63haaef2[/QUOTE] yea right! lol isnt there a proper code reader flying about on this forum somewhere??

Post 612899 by oblark on 2013-06-02 13:46:24

Try some fresh fuel :)

Post 612900 by JT on 2013-06-02 13:51:12

[QUOTE=oblark;612899]Try some fresh fuel :)[/QUOTE] 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

Post 612901 by Tomcat on 2013-06-02 13:54:37

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?..

Post 612902 by stribo on 2013-06-02 13:57:18

Have you checkedf the ignition side? Could be coil, rotor arm, dizzy cap.

Post 612903 by JT on 2013-06-02 14:01:23

[QUOTE=stribo;612902]Have you checkedf the ignition side? Could be coil, rotor arm, dizzy cap.[/QUOTE] 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

Post 612905 by stribo on 2013-06-02 14:08:12

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.

Post 612907 by timbo on 2013-06-02 14:12:43

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

Post 612912 by claymore on 2013-06-02 14:46:27

Mine used to do that, changed the plugs an all was perfect.

Post 612914 by WOODY T5 on 2013-06-02 15:04:09

Idle con valve !

Post 612995 by JT on 2013-06-02 19:48:08

thanks for all the input I will change plugs n leads tomorrow fingers crossed

Post 612996 by p fandango on 2013-06-02 19:51:28

[QUOTE=JT;612995]I will change plugs n leads tomorrow fingers crossed[/QUOTE] hows the missus going to get to work? lol

Post 613003 by JT on 2013-06-02 20:06:26

[QUOTE=p fandango;612996]hows the missus going to get to work? lol[/QUOTE] I would rather walk than drive her 1st option! lol

Post 613008 by merc85 on 2013-06-02 20:13:11

Split intercooler hose perhaps bud? will flag a light due to runing lean, check your boost hoses and intercooler buddy

Post 613014 by JT on 2013-06-02 20:21:20

[QUOTE=merc85;613008]Split intercooler hose perhaps bud? will flag a light due to runing lean, check your boost hoses and intercooler buddy[/QUOTE] 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

Post 613072 by glock19 on 2013-06-03 04:57:59

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.

Post 613090 by smithy on 2013-06-03 10:20:36

Was the car running fine before you fueled up .

Post 613137 by JT on 2013-06-03 17:24:06

[QUOTE=glock19;613072]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.[/QUOTE] I will check, but only fitted it a few weeks back [QUOTE=smithy;613090]Was the car running fine before you fueled up .[/QUOTE] It wasn't 100%,hence why I changed the fuel pump,but it was certainly alot better than it is now! lol

Post 613243 by PHIL V70R on 2013-06-03 22:25:14

what about water temp sensor...:ukliam2:

Post 613443 by JT on 2013-06-04 17:39:17

ok,now changed: plugs leads dizzy cap rotor problem still here:( add coil to that list,still no good:)

Post 613445 by smithy on 2013-06-04 17:49:54

[QUOTE=JT;613443]ok,now changed: plugs leads dizzy cap rotor problem still here:( add coil to that list,still no good:)[/QUOTE] Sounds lie crap fuel to me but check pressure on fuel rail too.

Post 613446 by JT on 2013-06-04 17:51:30

[QUOTE=smithy;613445]Sounds lie crap fuel to me but check pressure on fuel rail too.[/QUOTE] it stinks of fuel,I'm sure thats not the problem, but maybe the cleaner is too strong and messed it all up.:(

Post 613447 by smithy on 2013-06-04 17:56:26

[QUOTE=JT;613446]it stinks of fuel,I'm sure thats not the problem, but maybe the cleaner is too strong and messed it all up.:([/QUOTE] Have you tried another maf

Post 613453 by JT on 2013-06-04 18:09:34

[QUOTE=smithy;613447]Have you tried another maf[/QUOTE] Yes, was first on the list

Post 614626 by JT on 2013-06-08 10:33:13

[QUOTE=glock19;613072]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.[/QUOTE] 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

Post 614643 by V70 Graham on 2013-06-08 11:36:48

Good news, hopefully all sorted.....and a cheap fix to boot !

Post 614655 by JT on 2013-06-08 12:13:54

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?