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1986 Buick Somerset code 34

Tiny
FHLAWSON
  • MEMBER
  • 1986 BUICK SOMERSET
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 52,000 MILES
How can you test the sensor when you get a code 34?
Monday, September 20th, 2010 AT 11:21 AM

9 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
That's a Mass Air Flow sensor code. How is the car running?
Did you try clearing the code to see if ti comes back?
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Monday, September 20th, 2010 AT 11:33 AM
Tiny
FHLAWSON
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  • 6 POSTS
Yes reset code
runs ruff
step on gas---while moving--almost dies like running out of gas
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Monday, September 20th, 2010 AT 3:46 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
It's probably a bad sensor but check all the intake snorkels and any attaching hoses or pipes before assuming that.
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Monday, September 20th, 2010 AT 4:43 PM
Tiny
FHLAWSON
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  • 6 POSTS
There are two on the air intake
a small one with two wires and the one with three-i think this is the air mass sensor
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Monday, September 20th, 2010 AT 5:58 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
I was referring to making sure there are no air leaks between the sensor and the engine.
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Monday, September 20th, 2010 AT 6:31 PM
Tiny
FHLAWSON
  • MEMBER
  • 6 POSTS
Replaced mass air senson senson---same problem
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Sunday, October 3rd, 2010 AT 11:33 AM
Tiny
FHLAWSON
  • MEMBER
  • 6 POSTS
Also get a code 43---dont know what that is
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Sunday, October 3rd, 2010 AT 11:34 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,758 POSTS
That means the problem could be elsewhere in the MAF circuit. It can be any of the related wiring or the PCM.
A clogged exhaust will also give a MAF code
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Sunday, October 3rd, 2010 AT 11:37 AM
Tiny
FHLAWSON
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  • 6 POSTS
Also the oil light is on but the oil pressure is ok
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Sunday, October 3rd, 2010 AT 11:38 AM

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