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GMC R1500 5.7L. It has been in and out of a mechanics shop for several months, thankfully i only had to pay once. But it still has a problem, and the problem manly happens when the vehicle is idling. When the vehicle idles for to long to starts to surge and then eventually die. The longer I drive it for the quicker it will die when idling, or even slowing down. Every time i took it to the mechanic i said the distributor was bad, and it was. for a day it will run great and then by the end of the day it will be back to its old dieing self. I just got two new code, 32 and 42. Any tips on what I should do, and how do I fix those codes?

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  • Zach Ross Oct 17, 2013

    I have already checked the fuel pressure and it is right where it needs to be.

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  • Cars & Trucks Master
  • 378 Answers

If the codes you are talking about are P0032 and P0042 they are both related to high heat in O2 sensors I would start by checking the wires for damage, that is the #1 cause. However with minimum information on your vehicle, that would be my best guess. keep in mind i do not know the year, miles and am missing a lot of pertinent information.

Posted on Apr 09, 2017

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SOURCE: 94 Olds Cut. Ciera intermittently

1st if you can ,check the fuel pressure.sounds like it may not be holding pressure
when car is turned off.

Posted on Jun 19, 2011

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