Recently I cleaned EGR valve twice to put out the check engine light. Today car started making noise while accelerating and it is producing considerably less power. A quick check under the hood revealed that a hose between EGR valve and EGR modulator somehow disconnected. The sounds was air from the hose???
I reconnected the hose, but it disconnected once we started a test drive. Reconnected again - it disconnected again seconds later. The hose is really hot.
To explain which hose I am talking about take a look at this illustation:
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it is a thickershort hose with stripes, not any of the black ones. Question: should I just replace the hose? Is it an indication of some more serious problem?