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1991 Chevy Caprice open loop and closed loop?

Tiny
DIABLOVOX
  • MEMBER
  • 1991 CHEVROLET CAPRICE
  • V8
  • 2WD
  • AUTOMATIC
  • 215,000 MILES
I changed the muffler on my car and it started giving me bad mileage. My mechanic hooked up something to the car comp. And he says that the car starts running on an "open loop" after running on a "closed loop" because of a backpressure problem and I need to get the original muffler back. Is he right?
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Tuesday, May 13th, 2008 AT 10:29 AM

1 Reply

Tiny
JOSEPI387
  • MEMBER
  • 10 POSTS
When you say "i changed the muffler" do you mean that you replaced the muffler? If so, did you buy a recommended replacement part? Sounds like your mechanic is saying that you have installed the wrong type of muffler. You don't necessarily need the old one back, but you will need a suitable replacement.
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Tuesday, May 13th, 2008 AT 9:57 PM

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