by CCCars » Mon Feb 21, 2022 8:40 pm
Hi Matt, progress so far, I removed the components that the vacuum goes to and I think the solenoid valve may be faulty, I unplugged the electrical connection and with ignition on there is 12v to the plug, there are 3 pipe connections on this valve, one from the vacuum pump, one to the EGR valve and the flap valve in inlet and a third one which goes to the air filter housing.
The other component in the mounting I think is a MAP sensor measuring the pressure in the inlet manifold, this has a 3 wire connection plug.
I measured the resistance at the solenoid and got about 30 ohms but when I put 12v on it there was no evidence of anything happening, no click and no change to the passage of air through the valve.
I tried to connect to the diagnostic port, my plug fitted but the scanner couldn't communicate so still no further forward with that one.
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