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12-04-2005, 12:10 PM
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#1 | |
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AF Newbie
Join Date: Aug 2005
Location: Luna Pier, Michigan
Posts: 9
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Noise during acceleration-99 prizm
When I accelerate it sounds like I have an exhaust leak coming from the engine...but only when I accelerate. My pipes look OK and if I rev the engine out of gear it sounds fine. I think the intake manifold is OK since I have no coolant loss....Any thoughts.
I also have codes P0446 and P0441. Thanks for the help. |
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12-07-2005, 11:17 AM
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#2 | |
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AF Regular
Join Date: Jul 2004
Location: Upstate, New York
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Got the same condition. The noise goes away once the engine warms, but snow or rain will cause it to come back. I heard its caused by a crack that developes in the exhaust manifold, or manifold gasket. Good luck with the evap codes....all 99's develope them. It's either the pressure sensor or the canister
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12-07-2005, 11:19 AM
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#3 | |
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AF Regular
Join Date: Jul 2004
Location: Upstate, New York
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p.s. also make shure the exhaust system heat shields are tight
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12-22-2005, 04:30 PM
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#4 | |
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AF Newbie
Thread starter
Join Date: Aug 2005
Location: Luna Pier, Michigan
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Update: I got the car checked out and they said the sound is caused by a leak between uppipe and exhaust manifold and can be fixed with a new donut gasket/bolts/springs. The engine torque causes that joint to flex causing the sound. estimate=$100-150.
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12-23-2005, 11:11 AM
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#5 | ||
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AF Regular
Join Date: Jul 2004
Location: Upstate, New York
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Re: Noise during acceleration-99 prizm
Quote:
Seems kinda steep for gasket replacment. Have you tried a muffler shop? |
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07-14-2006, 01:22 PM
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#6 | |
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AF Newbie
Join Date: Jul 2006
Location: northern, Vermont
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Re: Noise during acceleration-99 prizm
I have a 1999 Prizm, I just needed a bolt for mine $9? Then 1hr labor $75 to replace it on the front exaust gasket flange.
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02-18-2008, 01:27 PM
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#7 | |
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AF Newbie
Join Date: Jul 2006
Location: northern, Vermont
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Re: Noise during acceleration-99 prizm
I have this issue again, I found a nice thread about it here: http://www.corolland.com/forums/inde...howtopic=17057
I just managed to change my serpentine belt in my 1999 Prizm, so maybe I'll take a crack at the donut / gasket. |
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02-22-2008, 03:22 PM
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#8 | |
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AF Newbie
Join Date: Jul 2006
Location: northern, Vermont
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Re: Noise during acceleration-99 prizm
Um yeah, so I jacked up the car I realized that I had ordered the gasket parts for the down/up pipe to catback.
But the issue is likely the connection from the manifold to the up/down pipe. Which has the spring loaded bolts, and is fairly hard to get to (unless I imagine the car is on a lift. I think I'll leave this to the pros. |
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