Code 66
#21
Posted 12 September 2017 - 06:15 PM
Cheers for the help guys
#22
Posted 12 September 2017 - 07:52 PM
aha!
well done for persevering.
Now -- BOV is a pretty simple device. Is the plumbing to it ok? Stuck open?
#23
Posted 12 September 2017 - 08:21 PM
#24
Posted 12 September 2017 - 09:18 PM
both nipples? OEM only has one.
Do the hose 10 mod while you're there.
https://www.tastesli...01-hose-10-mod/
#25
Posted 13 September 2017 - 04:19 AM
#26
Posted 16 September 2017 - 05:30 PM
At lower revs the boost seems to fluctuate around a lot between 3-6psi.
And I can get 2 2nd gear pulls out of it before code 66 comes back up and puts it in kind of a limp mode.
Can anyone think of any more avenues I can try?
#27
Posted 25 September 2017 - 06:06 PM
Still getting low boost out of the primary when I put my foot down, only 6psi then at 5000rpm the secondary comes on to 13-14psi. Then it throws itself into limp mode and I get code 45 and 66 come up.
But if I'm pulling up a hill in top gear doing 80kph I get 10psi out of the primary at 2500rpm.
But if I do the same at 60kph boost surges up and down between 3psi and 7psi.
Fuel economy is shithouse too only got 200ks from 40l.
Runs a but rough too when warm, almost like it's misfiring.
I did clean the solenoid box out again over the weekend and still no change, but I did find that the solenoid that has a hose connected to the MAP sensor doesn't open or close when in diagnostic mode with the green and black plugs under the dash connected. Just seems to be stuck kind of half open. All other solenoids open and close alright
Could that solenoid have anything to do with it, I know code 45 means Atmospheric pressure sensor/ Absolute pressure change solenoid Open or Short.
Is that the solenoid the code is pointing to?
#28
Posted 26 September 2017 - 09:34 AM
See if you can remove the solenoid and give it a good clean.
'04 Liberty GT Premium "The Sprog Chariot"
#29
Posted 27 September 2017 - 06:07 PM
Took it for a drive up the twisties near my house. Drove it hard for about 10-15mins and it pulled fine, change over was smooth was getting about 8psi from primary then up to 12psi when the secondary came on at about 4800rpm. Then I was pulling up a hill just on primary at 3000rpm and the CEL came on again.
No code 45 this time just code 66 again.
#30
Posted 27 September 2017 - 06:45 PM
I did clean out the MAF sensor too before I left and it still idles a little bit rough but it is slightly better after cleaning.
Anyone got some ideas what could cause the surging and rough idle?
#31
Posted 11 October 2017 - 07:51 PM
Connected the top port back up, this time with a .8mm restrictor pill. I got 10psi from the primary for about a second or two before it cuts back down to 6psi. Secondary came on a bit later again at around 5000rpm, this time ECV sounded a little slower to close off.
Does the ECV open to help control primary boost? If it does how can i get it to stay shut and prevent fluctuations from the primary?
#32
Posted 27 October 2017 - 04:16 PM
I did the ECV bypass mod and that brought the boost levels right but was still idling rough at around 1200rpm.
Had a look at some hose 10 mod threads and realised I had the BOV supply line still connected to hose 10 via a tee. So I removed the tee and ran the BOV straight to the manifold and hose 10 back to the intake pipe and bingo it now idles perfect at 700rpm.
So glad it's fixed and runs like a dream now
#33
Posted 30 October 2017 - 09:00 PM
glad its fixed.
For future reference -- I just came across this code 66 diagnosis flow
Code-66S-TwinTurbo.pdf 217.44KB 7 downloads
(from https://web.archive.org/web/*/http://www.veloce.pwp.blueyonder.co.uk:80/TT%20PDFs/Code-66S-TwinTurbo.pdf)
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