Hi everyone
So I've been having boosting issues and tempeature gauge issues
The car temp gauge would go up and down while I was driving and the car wouldn't boost past 1 bar then randomly it would hit max boost at 1.85 bar
But now it just won't boost past 1 bar at all I've scanned for fault codes and nothing is present at all
So far regarding the temp gauge I replaced the thermostat ,coolant sensor (front and rear) and it solved the problem
Now for the boost issue first of all I checked for the boost leaks and all was good there
So I moved on to the actuator couldn't see any issues
But I decided to replace it anyway
So I moved on to the map sensor 3bar (running speed density)
Changed it and again nothing
So I then moved on to the 3 port boost salinoid couldn't see any obvious issues
But decided to change it and again nothing
Still won't boost past 1 bar this just happened all of a sudden one morning running out of ideas would really appreciate some help

 

temp gauge bouncing is typically ground to intake is broke/faulty

 

It was coolant temp sensor that reads the gauge was faulty

 

Just to clarify the coolant sensor being replaced fixed the temp gauge
Im Still have boosting issues