Serious banging and black clouds ona 3rd gen
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Joined: Nov 2001
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From: Austria Europe
Serious banging and black clouds ona 3rd gen
Hi folks!
Usually I am more in the 2nd gen forums, but there is a CR that has me stumped. It belongs to a friend of mine.
While driving between 1200 and 2000 rpm at low loads it will sometimes make a very loud bang (as if you hit a pipe with a sledgehammer) and there is a puff of black smoke from the exhaust.
A Chrysler dealer in Italy says that it's the "exhaust pressure valve" - so his English and my Italian mix everything up now- and I have some strong doubts that the wastegate could make such a bang. With a 1960s truck I could hear this as a really worn exhaust brake...
There are no codes, the tranny fluid is good, (since the truck started doing this I suspected some kind of bindup in the auto)
So, anybody got any idea?
Thanks!
AlpineRAM
Usually I am more in the 2nd gen forums, but there is a CR that has me stumped. It belongs to a friend of mine.
While driving between 1200 and 2000 rpm at low loads it will sometimes make a very loud bang (as if you hit a pipe with a sledgehammer) and there is a puff of black smoke from the exhaust.
A Chrysler dealer in Italy says that it's the "exhaust pressure valve" - so his English and my Italian mix everything up now- and I have some strong doubts that the wastegate could make such a bang. With a 1960s truck I could hear this as a really worn exhaust brake...
There are no codes, the tranny fluid is good, (since the truck started doing this I suspected some kind of bindup in the auto)
So, anybody got any idea?
Thanks!
AlpineRAM
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Joined: Apr 2007
Posts: 2,283
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From: Coeur d'Alene ID
No EGR on a 2005 in the US but not sure if they installed them earlier in Europe. Indications are of a turbo that is not very happy. The bang could be a surge and the black smoke is lots of fuel and no air.
Inspect the intake and look at the inlet to the turbo to see if there is damage or obstruction.
Also just to make sure of the sequence, is it bang then black smoke, or smoke then bang. There can be fuel system issues that could also cause the symptoms but then I thing there would be other drivability issues.
Inspect the intake and look at the inlet to the turbo to see if there is damage or obstruction.
Also just to make sure of the sequence, is it bang then black smoke, or smoke then bang. There can be fuel system issues that could also cause the symptoms but then I thing there would be other drivability issues.
Thread Starter
Registered User
Joined: Nov 2001
Posts: 3,733
Likes: 264
From: Austria Europe
Well,the problem is that I don't have the truck at hand- After his complaints he tried to duplicate the problem with me on board, naturally there were no clunks, bangs or whatever.
But when he left I heard the bang when he turned into the mainroad, just out of sight.....
Now he went to Italy, and the banging got quite regular.
I'll try to check according to the suggestions (keep 'em coming) when the truck is back in my region.
Thanks!
AlpineRAM
But when he left I heard the bang when he turned into the mainroad, just out of sight.....
Now he went to Italy, and the banging got quite regular.
I'll try to check according to the suggestions (keep 'em coming) when the truck is back in my region.
Thanks!
AlpineRAM
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