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Not passing emission-25/25 test NOx ppm reading 1115 allowed

Customer Question
1082 . 50/15 test reading...
not passing emission-25/25 test NOx ppm reading 1115 allowed 1082 . 50/15 test reading 1281 allowed 1184
Have a normal eng temp, ECU code 55 , have changed out the following parts catalytic converter, EGR ,hoses, coolant tmp sensor, spark plugs, oil, filter, carb breather, fuel filter
Nissian xe 94 d21 4cyl 2.4 l
Submitted: 10 months ago.Category: Nissan
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Customer reply replied 10 months ago
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Customer reply replied 10 months ago
requested phone call service by error.
Answered in 3 days by:
12/30/2016
Nissan Mechanic: peterpete190, Auto Technician replied 10 months ago
peterpete190
peterpete190, Auto Technician
Category: Nissan
Satisfied Customers: 29,486
Experience: Over 17 years diagnosing and repairing vehicles.
Verified

My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.

If you have not had the fuel injectors tested this should be done.If one or more are allowing to much fuel in this can cause this issue and the injectors may need cleaned or replaced.If this is or was checked and found o.k. let me know.

If more help is needed, use the reply tab to continue our conversation. If no further assistance is needed, kindly rate my service,your 5 star rating is appreciated.You can rate at any time and we can continue to work on your question as this will not close out your question.Keep in mind in some cases it can be difficult to fully diagnose or help repair your vehicle without seeing it and I work on delivering the best possible answer from what I see to work with.

Thanks Pete

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peterpete190
peterpete190, Auto Technician
Category: Nissan
Satisfied Customers: 29,486
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