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loud engine when letting up on gas or coasting #629205 05/08/03 03:21 PM
Joined: Oct 2002 Posts: 8 Ohio A aimee OP Newbie
OP aimee Newbie A Joined: Oct 2002 Posts: 8 Ohio	The night before last I was driving and noticed that my engine was unusually loud and rough sounding as I let up on the gas and coasted. Right before that I heard a squeal and smelled rubber. Could this be a belt? Aimee 96 Contour 4 cyl

Re: loud engine when letting up on gas or coasting #629206 05/08/03 08:40 PM
Joined: May 2003 Posts: 1,421 Music City C CLASSVT Hard-core CEG\'er
CLASSVT Hard-core CEG\'er C Joined: May 2003 Posts: 1,421 Music City	Sounds like it could be, but that is why I go to certified mechanics. I Dunno? 99 Black SVT -3L Hybrid w/.5mm overbore, Spec clutch/flywheel, MSDS, BAT intake, K&N open, 17'Konig Tantrums, DMD, Opt. TB & Y, Powerslots, Bassani w/ magnaflow res. 96 SE MTX- "The War Wagon" "I'm in love with my car..." -Queen

Re: loud engine when letting up on gas or coasting #629207 05/08/03 08:58 PM
Joined: May 2001 Posts: 44 Baton Rouge, Louisiana C chenripp New CEG\'er
chenripp New CEG\'er C Joined: May 2001 Posts: 44 Baton Rouge, Louisiana	I guess it is the Pre-Catalytic Converter. My car has exactly the same symptom except it's a V6 duratec. The pre-catalytic converter is blocked by the disintegrated catalyst, so the exhausted gas leaks from the pipe and is absorbed via the ventilating system to your car. I even observed this one time I crawled under the car with the engine running. Some fume came out from the exhaustion pipe, just like the fume when carbon is not sufficiently burnt in the stove. Blocked pre-cat. convt. also explains why the acceleration is so sluggish when starting up, and the engine utters a loud noise. Hope this helps a little

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