|
S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004. |
Information |
|
V40 T4 with excessive boostViews : 314 Replies : 3Users Viewing This Thread : |
|
Thread Tools | Display Modes |
May 9th, 2019, 09:06 | #1 |
Junior Member
Last Online: Mar 23rd, 2024 20:52
Join Date: Jan 2016
Location: Porto
|
V40 T4 with excessive boost
A couple years ago I did the mandatory wastegate actuator 'thing' to improve my V40 performance.
I now want to reduce it again but unwinding the actuator has no effect. I already gave it 2 (complete) turns but boost is still around the 1.2bar mark... What can be the cause? "Worn" actuator? Mind you, the TVC is new(ish) and all the vacuum lines seem ok. thanks for your input. |
May 9th, 2019, 19:22 | #2 |
Senior Member
Last Online: May 16th, 2023 19:44
Join Date: Nov 2015
Location: Porto
|
Hi Ginga,
Sorry for the bad news. Have you checked the condition of recirculation valve diaphragm? Can't think of anything else at moment...
__________________
Phase 1 MY99 Manual V40 T4 |
May 9th, 2019, 19:26 | #3 |
Senior Member
Last Online: May 16th, 2023 19:44
Join Date: Nov 2015
Location: Porto
|
Ah, prove that the wastegate actuator isn't leaking air through it's for. If so the internal diaphragm is perished.
__________________
Phase 1 MY99 Manual V40 T4 |
May 9th, 2019, 19:27 | #4 |
Senior Member
Last Online: May 16th, 2023 19:44
Join Date: Nov 2015
Location: Porto
|
* through it's rod...
__________________
Phase 1 MY99 Manual V40 T4 |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Display Modes | |
|
|