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Virtual Technician
Virtual Technician, ASE Certified Technician
Category: Car
Satisfied Customers: 96
Experience:  25 years Experience. All makes and models, Shop Owner, Access to 4 repair databases. - I take the Opt Out Questions :)
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My 91 isuzu trooper keeps coding 32 egr system but the egr

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My 91 isuzu trooper keeps coding 32 egr system but the egr valve ,egr solenoid and the cat are new its the only thing keeping me from passing emissions
I'm guessing on the motor to be a: 2.6 liter.
Have you performed the any diagnostic?
Customer: replied 4 years ago.
i havent but i have taken it to a shop and they did there thats why i changed all that but every time i take it bake to them they say its one of thoes that i have changed
Do you have access to a hand vacuum Guage/pump , test light and multimeter?
Customer: replied 4 years ago.
no i dont
You can get them from most auto parts stores.
Once you have them in hand - perform the following:
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