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blownz281 · 09-26-2012, 04:05 PM

2003 Chevy Monte 3.4L 134,000 miles. Past few days the car has zero power from the time you put it into drive from up to 55mph then its better but not perfect. My first thought was converter clogged or muffler? 2 hr ride and neither one where red hot underneath. I reved the car up in park to 6grand and it didn't seem to have any issues.

The car when you give it gas sounds like its inside a glass bottle real muffled. Transmission shifts in and out of drive and stuff smooth. Then when it finally goes into gear its smooth. I tried to gas it good at 20mph it does nothing and I watched the rmps from 1,000-2,000 go up and down like a miss from a spark plug. Car idles perfect and no check engine lights.

How would I tell if the cat or muffler or resonator needs replaced?

Is the stall converter the cause of this? I would be surprised as they last forever as far as I know. I know a decent amount about cars,but not sure whats the issue here. Never messed with a transmission anymore then removing it and putting it back in place on my Z28 to install a HP stall.Thanks for any help.

Car temp is normal.

09-26-2012, 04:05 PM	#1 (permalink)
blownz281 Location: Coastal NC Find me on the map! Zone: 8b coastal Join Date: Dec 2008 Posts: 1,373 BananaBucks : 385,455 Feedback: 6 / 100% Said "Thanks" 440 Times Was Thanked 756 Times in 534 Posts Said "Welcome to Bananas" 14 Times	Car trouble! 2003 Chevy Monte 3.4L 134,000 miles. Past few days the car has zero power from the time you put it into drive from up to 55mph then its better but not perfect. My first thought was converter clogged or muffler? 2 hr ride and neither one where red hot underneath. I reved the car up in park to 6grand and it didn't seem to have any issues. The car when you give it gas sounds like its inside a glass bottle real muffled. Transmission shifts in and out of drive and stuff smooth. Then when it finally goes into gear its smooth. I tried to gas it good at 20mph it does nothing and I watched the rmps from 1,000-2,000 go up and down like a miss from a spark plug. Car idles perfect and no check engine lights. How would I tell if the cat or muffler or resonator needs replaced? Is the stall converter the cause of this? I would be surprised as they last forever as far as I know. I know a decent amount about cars,but not sure whats the issue here. Never messed with a transmission anymore then removing it and putting it back in place on my Z28 to install a HP stall.Thanks for any help. Car temp is normal.