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Rattling noise coming from exhaust.

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  #21  
Old 05-03-2019, 01:01 PM
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You don;t need a code reader to check fuel pressure look at the sticky { how to check regulated fuel pressure } at the top of the second gen section and follow it step by step
 

Last edited by odat; 05-03-2019 at 01:04 PM.
  #22  
Old 05-03-2019, 05:06 PM
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Yeah, you can rent (for free) a fuel pressure tester at pretty much any parts store. Super easy to check. Can save you wasting money replacing the wrong part
 
  #23  
Old 05-03-2019, 05:18 PM
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Originally Posted by Trip coverage
Would I do any damage to "the blazer"
If I drove her to AutoZone with a busted cat.
Took us six hours Not fixed.
 
  #24  
Old 05-03-2019, 06:26 PM
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Originally Posted by Trip coverage
Okay, yes the cat has been replaced with a straight pipe.
Took it to AutoZone. It threw 5 codes 2 0300
0171. And 2 0101.
The code reader says the blazer needs a fuel regulator.
Which makes sense because half of air filter is missing. Me and buddy are now tear apart the carb(injectors) to replace this part. Hope this fixes it.
0300 misfire - 0171 too lean - 0101 mas air flow / maf
All above can be caused by a bad cat low fuel pressure and such.
There is no code for a fuel regulator as the computer does not monitor fuel pressures -
Fix the air cleaner, clean the maf with cleaner made for it and do the fuel pressure tests 100% as sticky tells you too before you replace anything and spend money you don't need too spend ....
The failed cat was a easy guess now it's time to test and trouble shoot while you keep cash in wallet and wallet in hip pocket ......
 
  #25  
Old 05-08-2019, 10:33 AM
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Originally Posted by Trip coverage
And all the computer readers are locked up. Don't have access to those.
Switched out the cap and rotor .
Problem fixed.
Check engine light is still on. Don't care.
 
  #26  
Old 05-08-2019, 12:25 PM
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Originally Posted by Trip coverage
Switched out the cap and rotor .
Problem fixed.
Check engine light is still on. Don't care.
Not advised but - Works for you - Works for me - Luck to you ........
 

Last edited by odat; 05-08-2019 at 05:05 PM.
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