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My Dodge Nitro R/T sounds like it is backfiring & doesn't…

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My Dodge Nitro R/T sounds...
My Dodge Nitro R/T sounds like it is backfiring & doesn't seem to go the all of a sudden it will just take off like a shot!
Submitted: 7 months ago.Category: Dodge
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Answered in 5 minutes by:
9/27/2017
Dodge Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 7 months ago
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Dodge
Satisfied Customers: 5,338
Experience: Owner at Carolina Auto Service &Sales , 20 years Experience in Foreign & Domestic vehicles
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Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

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Dodge Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 7 months ago

Hey how are you

what is the mileage on it and has it been tuned up , plugs , coils ?

is the check engine light on now and did you scan it and retrieve fault code ,you can do that at local parts store nowadays for free .

does the check engine light when it back fires flashes ?

how many times does in*****? what gaz you use high or low octane ?

air filter changed ?

lets start here and we go from there

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

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Customer reply replied 7 months ago
128000.00 miles & yes the plugs have been replaced check engine light is on & sometimes it flashes 2 or 3 times & sometimes more.Yes it has a new air filter.
Dodge Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 7 months ago

i would need the fault codes to be sure on it , but the fact that it flashes tells me under load ignition coils are failing ,

get it scanned and post fault codes back to me ? can you do that

it could be other issues ,like failed injector ,pcm etc. so testing will be needed to be accurate

Please let me know

Thank You

Chad Farhat

ASE Certified Technician

Ask Your Own Dodge Question
Customer reply replied 7 months ago
I am at work so can't call. I do know all 4 02 sensors are shut down.I can get that other information to you . I am getting so frustrated with it!!
Dodge Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 7 months ago

that is no problem,I will help

all o2 sensor shut down ,not good, do we have wiring issue or ect sensor issue

if you know somebody with capable scanner we need these readings and I can be more accurate for you

1- Fuel trims readings ,long term and short term at idle at operating temp

2- fuel status : open loop when car cold and is switching to closed loop when gets warm

3- what are the readings on oxygen sensor , u said not working all show 0 volts or 0% on scanner when pulled up ?

4-And fault codes in the pending or history files

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Chad Farhat
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Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Dodge
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