brideon1337 Posted October 8, 2011 Share Posted October 8, 2011 strange noise clinking and rattling when letting off the gas when past 35ish mph and faster. Feels like its around front drivers side. Engine and exhaust seemed to get louder too after it started happening as well Quote Link to comment Share on other sites More sharing options...
cny first gen 71 Posted October 8, 2011 Share Posted October 8, 2011 Wouldnt be coming from the front but if a baffle broke loose in the muffler it would make a rattling noise and it would be louder. Just a thought. Quote Link to comment Share on other sites More sharing options...
Mo's70MCs Posted October 8, 2011 Share Posted October 8, 2011 could it be a worn exhaust heat riser? They tend to rattle awful bad. Quote Link to comment Share on other sites More sharing options...
cny first gen 71 Posted October 8, 2011 Share Posted October 8, 2011 Rod 71 or 72 didnt have a heat riser 70 was the last year for them im pretty sure. Quote Link to comment Share on other sites More sharing options...
brideon1337 Posted October 8, 2011 Author Share Posted October 8, 2011 Hmm. It tends to be only when I let off the gas completely at once past 35. It wont do it if I ease off the gas. My buddy in the passenger seat thought it was coming directly in front of me as well. Quote Link to comment Share on other sites More sharing options...
black07ss Posted October 8, 2011 Share Posted October 8, 2011 Are you getting a vibration after 35 as well? Kind of sounds like a U joint may be bad. Quote Link to comment Share on other sites More sharing options...
brideon1337 Posted October 8, 2011 Author Share Posted October 8, 2011 I dont feel any vibration until I let off the gas. But after that its like clacking banging rattling etc Quote Link to comment Share on other sites More sharing options...
black07ss Posted October 8, 2011 Share Posted October 8, 2011 I would check your U joints. Does it seem to bang rattle when you put it in gear Quote Link to comment Share on other sites More sharing options...
Sam (Bones) Posted October 8, 2011 Share Posted October 8, 2011 my '71 402 had one, but it was on the passenger side Quote Link to comment Share on other sites More sharing options...
zmanabba Posted October 9, 2011 Share Posted October 9, 2011 I had one on my 70 exactly like what Rod posted. Same type rattle but everything looked good. Took it off and the spot welds that held the flapper valve to the shaft had broken. David Quote Link to comment Share on other sites More sharing options...
Big Jim Posted October 9, 2011 Share Posted October 9, 2011 My wife's 72 had one. It's usually part of a single exhaust pipe system.The purpose it to help heat the intake manifold on cold starts. Quote Link to comment Share on other sites More sharing options...
Mo's70MCs Posted October 9, 2011 Share Posted October 9, 2011 I dont feel any vibration until I let off the gas. But after that its like clacking banging rattling etc Just another thought? How about converter bolts? I'm assuming your car is all stock? Quote Link to comment Share on other sites More sharing options...
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