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Check engine/EGR

Tiny
CARB42
  • MEMBER
  • 2001 ISUZU TROOPER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 138,000 MILES
I have a 2001 Trooper and the check engine light was on. Upon having it checked I was told that it was an EGR problem. My question is. Does this model have a EGR valve and solenoid or is it the valve only? Also, if the EGR valve was replaced, what would make the check engine light come back on after a couple of days and it be diagnosed again for the EGR?
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Monday, July 18th, 2011 AT 1:06 AM

5 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
What is the exact code number you have?There is more then one egr code. Let me know and I can be alot more help to you.
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Monday, July 18th, 2011 AT 1:20 AM
Tiny
BOLOVO
  • MEMBER
  • 2 POSTS
Insuffcient air flow egr valve
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Tuesday, April 24th, 2012 AT 1:55 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Is this same person that asked the question?I notice a different user name?Also what is the exact code number?It will be a P followed by a four digit number.
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Tuesday, April 24th, 2012 AT 3:15 AM
Tiny
BOLOVO
  • MEMBER
  • 2 POSTS
P401 CHANGE CATAYLIC CONVERTORS, ALL 4 O2 SENSORS, EGR VALVE AND CLEANED MAP SENSOR AND ALSO CLEANED PASSAGE WAY TO EGR VALVE CHECK ENGINE LIGHTS STILL COMES ON WITH THE CODE P401 AND ALSO CHANGE CHARCOAL CANISTER
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Sunday, May 6th, 2012 AT 2:56 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
So did you remove the egr valve and start it and see if the engine races and hear a loud exhaust leak?
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Monday, May 7th, 2012 AT 5:24 AM

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