Mac valve EBS clicking == no boost?

xplsek03

Idling at the Lights
Premium Member
Location
Czechia
First Name
M
Drive
1997 manual legnum
Before i diagnose further (tomorrow i will remove the mac valve and try with factory solenoid), i will also ask here. Mac Valve EBS goes tick-tick-tick-tick very fast whenever i hold gas pedal, even slightly, no matter how long, with release it stops.

Underpressure is beteeen 0,8-0,6 and with gas it goes to 0 but never over 0 == no boost. (boost gauge installed, also wbo2 etc). Turbos i can hear, 15psi springs.

1/ might it be cooked solenoid? Clicking is really tense, but im not sure if it can actually cause no boost (shouldnt it cause, like overboosting?) Or is it more likely boost leak somewhere?

2/ i will inspect whats inside ecu, are there any usual suspects (boost limit?) I should know about?


Thanks for a tip.
 

xplsek03

Idling at the Lights
Premium Member
Location
Czechia
First Name
M
Drive
1997 manual legnum
Solved, likely part of a different problem, possibly insufficient cold-air intake.
 
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