MAF sensor fault

2008 VAUXHALL ASTRA
60,000 MILES • 2.0L • 4 CYL • TURBO • FWD • MANUAL
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ANDREW PARSONS
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VXR map sensor reading -40 on live feed. Have changed the part as well as the MAF but problem is still there. Spanner light on dash.
Jul 7, 2017 at 11:00 AM
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STRAILER
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Hello,

It sounds like you have one of two problems, first would be a vacuum leak and the next would be a plugged catalytic converter.

Here are two guides that will help you get the problem fixed.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

and

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Please let us know what happens, we are interested to see what it is.

Cheers, Ken
Jul 9, 2017 at 7:19 PM