Thursday, 9 August 2018

Faulty EGR valve

The Exhaust Gas Recirculating valve strikes back.

I was unable to diagnose this and has to bring to the workshop to scan with their computer.

An engine check code was litted up and up came P0172. I have encountered this before but this time the EGR valve finally gave way.

The vehicle will threaten to stall when it is stopping at the traffic lights. The RPM gauge will rev up and down and then stall. Strong gasoline can be smelled from the tail pipe.

Fortunately it was a simple fix. Just replace the valve.

At the workshop's recommendation, the throttle body was also cleaned. It has accumulated lots of gunk over the last few years.

Throttle body

EGR valve for illustration only.