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I have a 99 QX4 with a P0325 code and no check engine light.
I have a 99 QX4 with a P0325 code and no check engine light. I'm trying to smog it but it's not ready due to the O2 sensor and Catylitic Converter OBD not complete. I've driven it about 750 miles. no … read more
Dan
Dan
Automotive Technician
Vocational, Technical or Trade Scho
23,906 satisfied customers
I HAVE A 2001 QX4 3.5 ENGREPLACED MAF SENSORRAN GREAT FOR
I HAVE A 2001 QX4 3.5 ENGREPLACED MAF SENSORRAN GREAT FOR ONE DAY THEN STARTED TO IDLE ROUGH AND WOULDN'T GO OVER 2500 RPM PERFORMED TEST ON PLUG ALL TEST GOOD EXCEPT ONE TEST WHERE YOU ARE SUPPOSED T… read more
David Craig
David Craig
OWNER/MECHANIC
Associates
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Just looking right now have about 3 codes p0400 p0325 and
just looking right now have about 3 codes p0400 p0325 and p0304 had a friend give me these codes after scanning and then he wipe them for me and said if the light comes back on take the car to autozon… read more
Technicaldan
Technicaldan
Technician
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120 satisfied customers
2000 INFINITY QX4...I NEED TO CHANGE THE KNOCK SENSOR,
2000 INFINITY QX4...I NEED TO CHANGE THE KNOCK SENSOR, BETTER YET, RELOCATE THE NEW ONE...I HAVE THE SENSOR...BUT THERE ARE SEVERAL WIRING HARNESSES ON THE ENGINE, HOW DO I FIND THE ONE FOR THE KNOCK … read more
Tim\u0027s Auto Repair
Tim\u0027s Auto Repair
Mechanic
High School or GED
14,710 satisfied customers
Infiniti QX4: I have a 2001 Infiniti QX4 3.5l.I have an engine
I have a 2001 Infiniti QX4 3.5l.I have an engine code P1135 and PO140.what do this code's mean? if bad sensoers,what are they called,and where are they located?can you send a diagram?what is bank 1/ba… read more
Jay
Jay
Certified Infiniti Technician
Vocational, Technical or Trade Scho
22,150 satisfied customers
My infinity qx4 1997 v6 3.3 is misbehaving for some reason
My infinity qx4 1997 v6 3.3 is misbehaving for some reason the rpm meter won't go higher than 2 1-2 if I try to push it more it does like explosion and it also won't go higher then 60 65 mph. What can… read more
Jay
Jay
Certified Infiniti Technician
Vocational, Technical or Trade Scho
22,150 satisfied customers
Infiniti QX4: how much would it cost to replace the knock sensors
how much would it cost to replace the knock sensors on a 1998 QX4? and is it a very complicated process to do this? I have been quoted a $700 cost to have it done.… read more
Eric
Eric
Retired
N/A
33,756 satisfied customers
Infiniti QX4: Hey there i have a 2001 infiniti QX4, i just
Hey there i have a 2001 infiniti QX4, i just purchased it and noticed the engine light is on. Got it scanned on the obd and it shows its a knock sensor and cylinder 1 misfire. Ive done some research o… read more
Greg
Greg
Shop owner, technician
Vocational, Technical or Trade Scho
5,840 satisfied customers
infiniti qx4: I have a 99 Infiniti QX4 that I just drove from
I have a 99 Infiniti QX4 that I just drove from phoenix to sacramento and was hauling about 5000 lbs behind me. I just got a check engine light on and the codes read p0325 and p0420. Can you tell me w… read more
Jay
Jay
Certified Infiniti Technician
Vocational, Technical or Trade Scho
22,150 satisfied customers
Hi Jay, Ive got a number of years as a certified Mechanic, some what
Hi Jay, I've got a number of years as a certified Mechanic, some what retired and trying to help a friend with a 97 QX4. Brought it in and would barely run. They had the rubber hose coming off the tb … read more
Jay
Jay
Certified Infiniti Technician
Vocational, Technical or Trade Scho
22,150 satisfied customers
Infiniti QX4: Hey, 1997 qx4 runs fine most of the time but
Hey, 1997 qx4 runs fine most of the time but once every week or so it will not start, come back in a hour and it cranks up. Just has valve cover gaskets replaced and water pump replaced and it started… read more
Tim\u0027s Auto Repair
Tim\u0027s Auto Repair
Mechanic
High School or GED
14,710 satisfied customers
Infiniti QX4: Hey buddy hope you are the one who can finally
Hey buddy hope you are the one who can finally help me out. I own a 99 QX4. I picked up headlight assemblies from an '02 QX4. Complete set.. What is my best bet? Should I find a plug to mate into the … read more
Jay
Jay
Certified Infiniti Technician
Vocational, Technical or Trade Scho
22,150 satisfied customers
Infiniti QX4: I have a 2001 infiniti QX4. My sevice engine
I have a 2001 infiniti QX4. My sevice engine soon light is on... I had it checked out and the code is: P0138, HO2S2 (B1), P/# XXXXX for the O2 sensor. Should I replace both LH and RH sensors? How are … read more
Ryan
Ryan
Infiniti Master Tech
Associate Degree
890 satisfied customers
1997 Infiniti Q45: following codes..emissions..Knock Sensor..heated
I own a 1997 Infiniti Q45, the check engine and a SLIP light are on and the following codes were diagnosed at the emissions center PO325, PO156, PO161 and PO330 which it failed. The codes show the Kno… read more
sal66chev
sal66chev
shop foreman
High School or GED
31 satisfied customers
1999 infiniti qx4: crankshaft position sensor..it located
would like to know the location of 1999 infiniti qx4 crankshaft position sensor thanks. where is it located . thanks… read more
Mike V.
Mike V.
technician
Subaru and Nissan factory training.
27,706 satisfied customers
1999 infiniti QX4: a check engine light that..oxygen sensor..voltage
I have a 1999 infiniti QX4 with a check engine light that goes on for several months and then goes off for about a month and then goes back on. This cycle occurred about 3 times over the last year. Th… read more
Ryan
Ryan
Infiniti Master Tech
Associate Degree
890 satisfied customers
1998 Infiniti QX4: replace my..my knock sensor..wrong part..trick
Can you help me figure out the cheapest part to replace my knock sensor in my 1998 Infiniti QX4? I'm not sure what I'm look at and don't want to get the wrong part. Here is one option that's cheap, bu… read more
HondaPlatinum
HondaPlatinum
Vocational, Technical or Trade School
25,554 satisfied customers
1997 Infiniti QX4: knock sensor..harness..intake manifolds
I'm looking to sell my son's 1997 Infiniti QX4, but the service engine soon light is illuminated I've taken it to a mechanic several times to get this fixed, but no luck this last time it had codes PO… read more
HondaPlatinum
HondaPlatinum
Vocational, Technical or Trade School
25,554 satisfied customers
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Meet the Experts:

Jay

Jay

Certified Infiniti Technician

22,150 satisfied customers

20+years, Nissan and Infiniti experience and currently now working for a Infiniti Dealer

Ryan

Ryan

Infiniti Master Tech

890 satisfied customers

Infiniti Master available by request Thank you!!!

ROY

ROY

Nissan Master

189 satisfied customers

Nissan Master and ASE certified Master Technician

Mike O.

Mike O.

Infiniti Master technician

113 satisfied customers

18 years Nissan/Infiniti experience

Ron Z.

Ron Z.

- Infinity Tech -

113 satisfied customers

18+yrs experience. State Inspector and Infinity Diagnostics

George H.

George H.

ASE Certified Technician

101 satisfied customers

ASE Master Tech 15+ years

Mike Kelly

Mike Kelly

Infiniti Mechanic

62 satisfied customers

17 years experience as an auto mechanic, foreign and domestic. 5 years running my own repair business.

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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