Having problems with your 2003 Ford Focus ?

2003 focus with rough idle and tach surge. No code yet although problem been there a couple weeks. Took the vacuum hose off the egr valve and rough idle/surge cleared up. Pending problem on obdII still there. Vacuum hose had suction at idle. Maybe the pressure switch the problem?

Posted / edited by AnonymousUser on : 19-11-2018

Answers :

Carbon build up in the egr passages and the hose is collapsing
Repair Help & Product Troubleshooting for 2003 Ford Focus

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