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2002 monte carlo SS, no power, wont go over 20 mph.

  #1  
Old 07-19-2018, 12:28 AM
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Join Date: Jul 2018
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Default 2002 monte carlo SS, no power, wont go over 20 mph.

Hi guys,
. Just got this car. 3.8, 109,000. Previous owner said it wont go over 20 mph, which it doesnt, I tried. Before I get crazy on this I figured I'd ask for some direction first. Where should I start?? I am picking up a fuel pressure gauge today after work. Also, I have no check engine lights.
I am replacing the BCM also as I have a mystery battery drain. Thank in advance
 

Last edited by Jasonwilburn98; 07-19-2018 at 12:31 AM.
  #2  
Old 07-19-2018, 05:19 AM
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Location: Isanti, MN
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First place I would check is the catalyst convertor. Does the exhaust sound weird like it restrictive ? Can put your hand over the tailpipe and see if there is normal flow when you rev the engine. Good luck
 
  #3  
Old 07-20-2018, 11:21 PM
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Originally Posted by Jeffs02rwdSS View Post
First place I would check is the catalyst convertor. Does the exhaust sound weird like it restrictive ? Can put your hand over the tailpipe and see if there is normal flow when you rev the engine. Good luck

I'll add, can you look under the car, does the cat get red in color?
 

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