Need help. My pruis runs great. Hit a giant hole 2 weeks ago. Had a bad rattle. Like a knock senor or heat shield. Raised car. Checked all for looseness. Nothing. 2 days later it went away. Came back today after 1 week. When I accelerate fast sound goes away. No codes. Could it be in the convertor. 220k new headgasket . Nothing looks loose.cannot find it at idle. Sounds like it could be in engine. Like valve train. But why would it go away. Thanks in advance.
You have posted a topic in the PriusV section. In the description Prius 2011, apparently Gen3. It looks like you have problems with the EGR. It can get clogged with soot residue from the exhaust, which causes the EGR valve to stick in medium power mode. Have you ever cleaned this system?
