Post 706540 by c70geoff on 2014-04-26 17:22:40
Here we go again, for some reason the car is playing games with me when i floor it
some days it gives me awesome turbo power then others (more often than not) it feels like im either running of no turbo or its taking forever to spool up
please someone tell me this is an easy fix and that someone has had this issue and solved it
and before you say it the car has be run through a volvo computer and my brand spanking snap on Modis Ultra and gave no codes :(
Post 706557 by LiamT4 on 2014-04-26 18:49:38
Dodgy BCS possibly? Have you got a boost gauge to see how much boost its actually running?
Post 706589 by stribo on 2014-04-26 20:11:23
Could be the actuator sticking open.
Post 706596 by LiamT4 on 2014-04-26 20:23:15
When thinking about it, i only ever had one problem with my s70r and it sounds like a similar issue, and i'm sure that was the actuator. May as well start with that, as it won't cost anything to check.
Post 706600 by c70geoff on 2014-04-26 20:32:15
no boost gauge but your both going down same route i was thinking with the actuator
will check tomorrow and report back
also can they be freed easy or will i need new?
Post 706602 by LiamT4 on 2014-04-26 20:35:26
[QUOTE=c70geoff;706600]no boost gauge but your both going down same route i was thinking with the actuator
will check tomorrow and report back
also can they be freed easy or will i need new?[/QUOTE]
Should be able to fix it, the hardest bit will probably be just getting the heat shield off lol
Post 706612 by c70geoff on 2014-04-26 20:53:55
never anything bloody simple lol
Post 706613 by M-R-P on 2014-04-26 20:57:05
If it's sticking, it's easily sorted with dw40 and some wiggling.
See if the actuator is easy to move by hand.
Post 706615 by M-R-P on 2014-04-26 21:01:14
[QUOTE=c70geoff;706614]dw-40 ?[/QUOTE]
Yep. It's the spigot that connects the wastegate arm to the wastegate inside the turbo that sticks. Plenty of wd40 or plusgas to free it.
Post 706621 by LiamT4 on 2014-04-26 21:09:01
If you've not got any dw-40 then you can use wd-40, it works just as well ;)
If the heatshield hasn't been off before then you'll probably need plenty of wd-40, leave it overnight and put some more on.
Post 706622 by c70geoff on 2014-04-26 21:09:13
was the dw 40 bit matey lol
Post 707094 by c70geoff on 2014-04-28 10:48:54
Wd-40ed the crap out of it and can only move it about 3 to 4 mm back and forth :(
Post 707096 by M-R-P on 2014-04-28 10:52:28
Have you taken the actuator arm off the lever? (I'm guessing you have) you should have about 90 degrees of movement - if not, a small hammer and more WD40 (or DW40 if you like ;) )
Post 707100 by c70geoff on 2014-04-28 11:01:12
Going down garage in bit and taking whole bloody lot off and doing on bench instead of on car
Post 707106 by Wobbly Dave on 2014-04-28 11:15:44
[QUOTE=LiamT4;706621]If you've not got any dw-40 then you can use wd-40, it works just as well ;)
If the heatshield hasn't been off before then you'll probably need plenty of wd-40, leave it overnight and put some more on.[/QUOTE]
WD-42 is unpredictable but is made specifically to work on C70s
Post 707116 by c70geoff on 2014-04-28 12:12:45
Decided gonna just swap turbos by end of the week just need to find a cheap one for now as I need a fuel filter oil cooler and lambda sensor too
Bloody joys of motoring
Cheer Dave Liam and Martin for advice :)
Post 707127 by M-R-P on 2014-04-28 13:07:13
[QUOTE=Wobbly Dave;707108]Actually you'll be better off with one of these...
http://www.ebay.co.uk/itm/MINIVAC-MINI-VAC-VACUUM-HAND-PUMP-WITH-PRESSURE-GAUGE-/270745631326?pt=UK_BOI_Medical_Lab_Equipment_Lab_Equipment_ET&hash=item3f09b27a5e
to check that the actuator is set up properly and has full movement.[/QUOTE]
That's a vacuum pump Dave...
Don't actuators work via positive pressure ?
Post 707140 by stribo on 2014-04-28 13:28:16
[QUOTE=M-R-P;707127]That's a vacuum pump Dave...
Don't actuators work via positive pressure ?[/QUOTE]
They do mate, judging by the description, Dave's been using it for something else. ;)
Post 707144 by Wobbly Dave on 2014-04-28 13:33:50
[QUOTE=stribo;707140]They do mate, judging by the description, Dave's been using it for something else. ;)[/QUOTE]
No mate - I already have a massive penis LOL
Post 707154 by stribo on 2014-04-28 14:33:53
[QUOTE=Wobbly Dave;707144]No mate - I already have a massive penis LOL[/QUOTE]
Nipple enlargement it is then. :P
Post 707161 by Wobbly Dave on 2014-04-28 15:03:34
[QUOTE=stribo;707154]Nipple enlargement it is then. :P[/QUOTE] no comment
Post 707391 by phillyc2003 on 2014-04-29 10:22:34
Would like to no how you have got on as my pre me7 c70 suffers the same fate.i have already renewed actuator and tcv .still radomley has its moments. I am thinking posible waste gate housing cracked !the turbo over speeding ?
Post 707420 by M-R-P on 2014-04-29 13:51:39
[QUOTE=stribo;707140]They do mate, judging by the description, Dave's been using it for something else. ;)[/QUOTE]
Reminds me of a particular person testing someone's actuator with one of those things, making something like "15psi" and wondering why it wouldn't open...
And no, it wasn't me but it is the reason I made the test rig.
Post 720164 by Slammedflex7 on 2014-06-21 08:55:33
I have had the same problem took the plug off my maf sensor and it flies in first gear.
But as soon as you go into higher gears the boost does drop I also seem to get my boost gauge vibrating, my plan is to just drop a 16t into it and see if this cures it but for the mean time it's fine with the maf plugged in after An ecu reset.
My actuator seemed to open about 5psi I thought that was a bit weak.
Can anyone clarify
Post 721078 by c70geoff on 2014-06-26 18:58:14
at the mo i'm boosting fine but sure it will start playing up again
changing turbo soon so will keep u posted
Post 721096 by stribo on 2014-06-26 20:32:36
I thought your current turbo was fubar.
Post 721258 by c70geoff on 2014-06-27 20:57:57
thats cause ive gone back down smaller now wanna go back up without issues
Post 721325 by M-R-P on 2014-06-27 23:16:28
[QUOTE=Slammedflex7;720164]I have had the same problem took the plug off my maf sensor and it flies in first gear.
But as soon as you go into higher gears the boost does drop I also seem to get my boost gauge vibrating, my plan is to just drop a 16t into it and see if this cures it but for the mean time it's fine with the maf plugged in after An ecu reset.
My actuator seemed to open about 5psi I thought that was a bit weak.
Can anyone clarify[/QUOTE]
Is that 5psi on the gauge or 5psi at the actuator? if it's at the actuator, that's about right and the bcs will deal with the rest.