Uneven turbo pressure - Alfa Romeo Forum
You are currently unregistered, register for more features.    
Thread Tools
(Post Link) post #1 of 3 Old 31-08-12 Thread Starter
Status: -
AO Member
Join Date: Jan 2008
Location: Norway
County: -
Posts: 11
Uneven turbo pressure

Hello everybody. I have a problem with my 166 2,4 FL and need some help. When driving uphill in high gears and flat pedal, the power is first ok, then going up and down, just as the turbo pressure is not stable. I have Multiecuscan, but the data is difficult to understand (for me). For example is desired air quantity and measured air quantity not corresponding at all, desired lower at normal driving, higher at full load. EGR valve,MAP, turbo boost valve and hoses are new. Can MAF cause this fault, I tried to disconnect it but all the same. Can someone advice what to look for at Multiecuscan? Thak you in advance
Jens is offline  
Sponsored Links
(Post Link) post #2 of 3 Old 01-09-12 Thread Starter
Status: -
AO Member
Join Date: Jan 2008
Location: Norway
County: -
Posts: 11
Jens is offline  
Status: -
AO Member
Join Date: Jan 2011
Location: Portugal
County: Porto
Posts: 157

Member car:

Brera 2.4 JTD

Hello Jens, air quantity won't help you much here I think. Desired air quantity is relative to the EGR (if i'm not mistaken) and is of no interest to us.

What you must do is log: rpm, boost valve solenoid (not the correct name, but something like that, its before the boost parameters), desired boost pressure and boost pressure. This will show what is happening with the turbo.
exar1711 is offline  

Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > Engines (TS, JTS, JTD & V6)

pressure , turbo , uneven

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Forum Replies Last Post
OBD II Codes Smaky Alfa 145 & 146 62 14-08-19 13:36
JTD/JTDM MCSF & other problems FIX losa Alfa 147, 156 & GT 154 26-09-16 20:05
Defined/desired turbo pressure difference... dusanGT Tuning & Upgrades 17 30-06-10 15:36
Adequate turbo pressure? dusanGT Tuning & Upgrades 21 04-06-09 16:47
04 1.9 JTD M-Jet Sport - Uneven turbo erlingo Alfa 147, 156 & GT 10 04-12-08 21:25

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

For the best viewing experience please update your browser to Google Chrome