2008 h3 rattle noise on cold start up
#1
2008 h3 rattle noise on cold start up
I have a 2008 h3 with 51000 miles on it when i start it up cold it makes a rattle or rumming noise took to a dealer today and they said that they are not sure what it is they will try again tomorrow to figure it out any ideas thanks
#2
Mine was doing that and it would stop when it warmed up. It turned out to be a very large crack in the exhaust manifold . The raddle was the exhaust gas hitting the heat shield. The manifold is part of the emission warranty . My H3 had a little over 70k on it and was still covered.
#5
would this happen only at certain RPMs? I have something similar that only happens until the '06 warms up a bit. It only happens at or around 1000RPMs (whether idling or in motion). A very annoying, loud rattling sound. After the car is on for a minute or so, or at RPMs other than 1000, it is perfectly quiet. Any ideas??
#7
Ok mine stopped making that rattle after the dealer replaced my exhaust manifold. Now that everyone is talking about their rattles , mine started again and IT'S LOUD !!!! When I pulled in the driveway and stopped, it stopped. I looked under , over , in front , behind, nothing . I drove around the block and it rattled again. Now it's time to just park it and start touching everything I could find. Ok I found it , it's the heat shield over the right motor mount. I pulled it up a little and now after a 4 mile road test NO noise. I hope this works for you too.
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Hummer2006h3
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05-30-2011 02:01 PM