He says this cos he reckons having checked the EGR valve that it is mechanically fine and that the problems i have with my car is due to the ecu being fed duff info due to my post factory fitted items!!!!!!! Utter tosh. You should find yourself another garage :L. The P0400 fault is usually due to a 'sticky' EGR valve.
17 posts · Joined 2014. #1 · Jul 28, 2018 (Edited by Moderator) Hi all, any help much appreciated. My wife was driving back from Wales yesterday and the EML came on. I got hold of a code reader and it reports fault codes: P042e - Exhaust Gas Recirculation A Control Stuck Open. P0490 - Exhaust gas recirculation (EGA) system -circuit high. A non-blanked EGR valve does cause problems - even when its working "correctly". problems include, flat spots, hesitation, lag at low revs, poor performance at some revs, poor economy & further problems caused by the carbon/ gunge building up in the inlet (manifold/ EGR etc) Quote. You can post now and register later.

Shop Ford Focus Replacement EGR Valve. Reburning exhaust gases makes your Ford Focus more efficient and cleaner to drive. The EGR valve is a part name that stands for exhaust gas recirculating valve. This valve opens or closes to control the flow of exhaust gases back toward the engine where they warm the air and fuel mixture in the combustion

How to change EGR valve on Ford Focus MK2 – replacement guide Free download PDF 1.49 MB Want to get more useful information? Ask questions or share your repair Took it to the dealer who diagnosed that it needed a new Purge Valve and Emissions Canister replacement. I bought this and this to try and replace myself after Ford estimated that it'd cost $776 to do the repairs. I replaced the Evaporative Canister Vent Solenoid Valve but returned the Vapor Canister Purge Valve after realizing it didn't fit. dV9Rb2b.
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    • ford focus mk2 egr valve location