Yep, that's what I'm reading, allowing for my gauge inaccuracy, (or eyes that can't differentiate enough).
I have another gauge that reads +vePSI and -ve inHg but it needs power feed so haven't plumbed it in yet.
Checked all pies again, still no leaks. Checked connectors, seem fine.
Unplugged TCV, and still have same boost, so now points to
1. New TCV from volvo is faulty
2. Signal not getting to TCV from ecu
3. Broken wire in cable to TCV.
No time to check tonight with multi meter to see if I'm getting power to TCV. Do these TCV's click when powered up with the ignition as vauxhalls and saabs do? Will be quicker than a meter if they do..
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