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1999 Chevy Blazer Engine Service Soon light on

Tiny
GINAMANFREDO
  • MEMBER
  • 1999 CHEVROLET BLAZER
Engine Mechanical problem
1999 Chevy Blazer 6 cyl Automatic

I sent the car to the mechanic and they fix a problem with gas regulator. Now, the engine service soon light is on and when they scan the code P0171 and P0174 shows up. They already check the oxygen sensor and its ok. Also they clean the inyections. Could you help?
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Friday, June 20th, 2008 AT 6:23 PM

1 Reply

Tiny
OBXAUTOMEDIC
  • MECHANIC
  • 3,711 POSTS
Ok, you say you had the fuel pressure regulator replaced. What was the problem with the vehicle for you to take it in to be checked?

Did they check the fuel pressure?

When did they check the O2 Sensors? There are I believe 2 maybe 3 O2 Sensors. 1 in each exhaust manifold and possibly 1 either before or after the Catalitic Converter.
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Thursday, June 26th, 2008 AT 5:48 PM

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