MAF sensor fault

Tiny
ANDREW PARSONS
  • MEMBER
  • 2008 VAUXHALL ASTRA
  • 2.0L
  • 4 CYL
  • TURBO
  • FWD
  • MANUAL
  • 60,000 MILES
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.
Friday, July 7th, 2017 AT 11:00 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,973 POSTS
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
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Sunday, July 9th, 2017 AT 7:19 PM

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