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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

CEL CODE 71 EGR or Modulator?

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Old Jun 25, 2011 | 04:32 PM
  #1  
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From: Rio Rancho, NM
Question CEL CODE 71 EGR or Modulator?

Hi guys, I am getting a code 71 (EGR) tripping my Check engine light. How do I know if it is the valve or the modulator that needs to be replaced?

thanks

Mark
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Old Jun 26, 2011 | 07:21 AM
  #2  
markfagus's Avatar
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From: Rio Rancho, NM
I have done some additional research but cant find anything that tells me how to know if the EGR Valve or EGR Modulator is what is causing the check engine light.
The EGR valve is a pricey part so I dont want to replace if I dont have to.

Any ideas?
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