Nissan

Nissan repair questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

Replaced my knock sensor on my 2002 Nissan Frontier - now…

Replaced my knock sensor...

Replaced my knock sensor on my 2002 Nissan Frontier - now its running poorly, wont Idle or stay running - curious about if I missed something on the vacuum side.

Mechanic's Assistant: Which particular sensor are you asking about? And have any trouble codes been triggered?

No codes - the only code I had was for the Knock sensor and I replaced that - painfully so. I ran it afterwards and it wont idle or stay running. Checked codes - no codes

Mechanic's Assistant: Are you fixing your Frontier yourself? What have you tried so far?

Yes, I removed my 2 stage Intake replaced the knock sensor and reinstalled.

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

That's good enough

Show More
Show Less
Ask Your Own Nissan Question
Answered in 1 minute by:
6/5/2017
Jay
Jay, Nissan Technician
Category: Nissan
Satisfied Customers: 21,828
Experience: 20+yrs experience with Nissan & Infiniti Trained & Certified.Currently still working for Dealer
Verified

Hello my name is ***** ***** thank you for your question

There is one thing that is fairly common when knock sensors are done. The two connectors for the rear 02 sensors since they are right next to each other, the connectors get plugged in backwards and can cause this.

Lets try swapping them and see if that resolves your issue. Let me get you a image..

Ask Your Own Nissan Question
Ask Your Own Nissan Question
Customer reply replied 1 year ago
I think it might have something to do with my vacuum hoses - cant find a good photo of where they all go!

There is only a couple you are dealing with in the back of the plenum. Try the 02 sensor thing first. That is fairly common. I circled them in the image.

Ask Your Own Nissan Question
Customer reply replied 1 year ago
Are you still there?

I saw you requested premium service. I got a message saying payment failure. So we can continue like this, or just update your payment method.

Yes, I am here.. Are you going to try swapping the 02 sensor connectors like I mentioned?

Ask Your Own Nissan Question
Customer reply replied 1 year ago
Thanks! I started getting text from my bank - that should be taken care of now!

If you wish to speak with me, just request it again

Ask Your Own Nissan Question
Customer reply replied 1 year ago
I am at work and of course my vehicle is at home!

Oh.. So how about this. Let me hold this question open, so you can try this when you get home after work? Sound good?

Ask Your Own Nissan Question
Customer reply replied 1 year ago
I updated information - but it wont let me have a live phone call. Irritating.
Customer reply replied 1 year ago
that could be it - I will check first think when I get home!

Sure.. Check that when you get home.. Then log back into JustAnswer.com and let me know how you make out. If you still need help with this issue, I will continue with you then!

Sound good?

Ask Your Own Nissan Question
Customer reply replied 1 year ago
That sounds great! I appreciate that. I there anyway you may have a photo of how my vacuum lines should go?

If you take pictures and show me, I can confirm if they are correct or not. The manual is horrible about showing how they go..

Ask Your Own Nissan Question
Customer reply replied 1 year ago
Figured it out - bad vacuum line to fuel pressure regulator and air leak on intake. Thanks for your help.

Glad you got it figured out !

Ask Your Own Nissan Question

If you have any more questions on this, please feel free to ask.

If not, and you're satisfied with my help, please Rate me. That is how I get credit for my work. I hope I have provided you with 5 Star Excellent Service.

Thanks Jay!

Jay
Jay, Nissan Technician
Category: Nissan
Satisfied Customers: 21,828
Experience: 20+yrs experience with Nissan & Infiniti Trained & Certified.Currently still working for Dealer
Verified
Jay and 87 other Nissan Specialists are ready to help you
Ask your own question now
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a nissan mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Jay Your Own Question
Jay
Jay
Jay, Nissan Technician
Category: Nissan
Satisfied Customers: 21,828
21,828 Satisfied Customers
Experience: 20+yrs experience with Nissan & Infiniti Trained & Certified.Currently still working for Dealer

Jay is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

I was in trouble with an electrical issue with my brand new Nissan. I frantically went online trying to find help and luckily I found your site. I reached a NISSAN tech named RIP. He was absolutely tremendous and helped me work through the issue. What a pro!

cjazLexington, KY

I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.

Stephanie PElm City, NC

used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.

David L.Richmond, TX

9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.

PhilMarysville, CA

Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.

CharlesWalnut Creek, CA

As a single woman, I really appreciate an excellent and affordable opinion.
Thank you Geordie, I will not hesitate to contact justanswer in the future!

SueCharleston, WV

Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.

JimCastleberry, FL

< Previous | Next >

Meet the Experts:

Chris(aka-Moose)

Chris(aka-Moose)

Nissan Technician

747 satisfied customers

16 years of experience

Tim Mohr

Tim Mohr

ASE MASTER TECH

602 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

Marty

Marty

ASE Certified Technician

161 satisfied customers

ASE & Bosch master tech. 30 years experience.

Mike V.

Mike V.

Nissan Technician

9,482 satisfied customers

Nissan factory trained and Certified Subaru Technician.

Ron

Ron

ASE Certified Technician

589 satisfied customers

34 years of automotive Repair

Anthony

Anthony

ASE Certified Technician

332 satisfied customers

ASE Master Automobile Technician with over 18 years exp. in this field.

Richard

Richard

ASE Certified Technician

92 satisfied customers

Nissan Tech ASE certified technician

< Previous | Next >

Related Nissan Questions
I have a 2004 V-6 Frontier. Drove from TX to WA State and it
I have a 2004 V-6 Frontier. Drove from TX to WA State and it ran great. Been in WA about two months and it started running ruff like one cylinder was not firing. Check Engine light came on. After driv… read more
Jay
Jay
Nissan Technician
Vocational, Technical or Trade Scho
21,828 satisfied customers
frontier: i have a 2002 nissan frontier 3.3l It is idling
i have a 2002 nissan frontier 3.3l It is idling rough ( at idle only) no visible black smoke out exhaust, was showing knock sensor code bank 1 ( replaced sensor) new gaskets on lower intake, plenum, a… read more
Jay
Jay
Nissan Technician
Vocational, Technical or Trade Scho
21,828 satisfied customers
Frontier: Hey Mike we have a 2000 Nissan frontier, it has been
Hey Mike we have a 2000 Nissan frontier, it has been hell! We did a head job, it ran perfect for a week, came back rough idle. We checked timing, it is perfect. We took upper and lower intake off, rep… read more
Mike V.
Mike V.
Nissan Technician
Subaru and Nissan factory training.
9,482 satisfied customers
FRONTIER: I have a 2002 Nissan Frontier Crew Cab with the supercharged
I have a 2002 Nissan Frontier Crew Cab with the supercharged engine; at low speeds I get a sound like a coffee grinder from the engine bay; only at low speed, not when idling and not at highway speed.… read more
3pac2222
3pac2222
nissan master auto tech
Associate Degree
2 satisfied customers
Nissan/Datsun Frontier: 2002 frontier runs great until it warms
2002 frontier runs great until it warms up then begins missing and will not idle. Have replace o2 and another sensor and no better.… read more
3pac2222
3pac2222
nissan master auto tech
Associate Degree
2 satisfied customers
2000 Nissan Frontier: V6 /236,000 miles running..misfiring..stalling
My 2000 Nissan Frontier w/3.3L V6 /236,000 miles running very poorly with engine misfiring and stalling. Dealer says trouble codes indicated replacement of crankshaft position sensor and knock sensor.… read more
Mike V.
Mike V.
Nissan Technician
Subaru and Nissan factory training.
9,482 satisfied customers
2002 Nissan Frontier: cyl..knock sensor..pressure sensor signal
Hello - I own a 2002 Nissan Frontier (6 cyl) with the following engine codes (P1446 - vent valve closed at wrong time, P0328 - knock sensor bank 1 signal high, P0452 - evap pressure sensor signal low … read more
Roy
Roy
Vocational, Technical or Trade Scho
5,421 satisfied customers
2000 NISSAN FRONTIER: oem..CHECK ENGINE LIGHT CAME BACK
WE JUST REPLACED THE KNOCK SENSOR ON A 2000 NISSAN FRONTIER (WE BOUGHT AN OEM ONE). TWO DAYS LATER THE CHECK ENGINE LIGHT CAME BACK ON WITH A P0328 CODE--KNOCK SENSOR. DOES THIS NEED TO BE PROGRAMMED … read more
Mike V.
Mike V.
Nissan Technician
Subaru and Nissan factory training.
9,482 satisfied customers
2000 Nissan Frontier: intake gasket..I picked the car up, it idled
Hi, I just took my 2000 Nissan Frontier to have the valve cover gaskets replaced and had them change the knock sensor. So they replaced the valve cover gaskets, lower intake gasket and replaced the kn… read more
Mike V.
Mike V.
Nissan Technician
Subaru and Nissan factory training.
9,482 satisfied customers
2000 Nissan Frontier XE: V6..vehicle runs like complete crap
2000 Nissan Frontier XE V6. was running just fine and then BAM! vehicle runs like complete crap. barely runs, but i can keep it running. smells like its running full rich. managed to keep it running l… read more
3pac2222
3pac2222
nissan master auto tech
Associate Degree
2 satisfied customers
99 nissan frontier: skipping/vibrating in the truck.we
we have a 99 nissan frontier truck. we are having a skipping/vibrating in the truck. we have replaced the plugs and wires. the service engine light comes on . when you speed up it does not do it when … read more
Mike V.
Mike V.
Nissan Technician
Subaru and Nissan factory training.
9,482 satisfied customers
97 nissan altima: knock sensor and now the car stalls..few minutes
i have a 97 nissan altima replaced knock sensor and now the car stalls out after a few minutes of it running problem started after replacing sensor… read more
Tim West
Tim West
Service Manager
Computer/ Automotive certifications
16 satisfied customers
2000 nissan frontier 3.3 eng . Problem started several weeks ago.
2000 nissan frontier 3.3 eng . Problem started several weeks ago. At idle it started running bad and had jerky take off. Showed code of knock sensor circuit and TBS sensor circuit. TBS was changed and… read more
Roy
Roy
Vocational, Technical or Trade Scho
5,421 satisfied customers
2000 Nissan Frontier: 3.3, 6 cylinder engine..idleing..knock sensor
I have a 2000 Nissan Frontier, 3.3, 6 cylinder engine, having problems; irraticle idleing, got code = P0505. Original code read = knock sensor, changed it and still experiencing same problem...please … read more
Mike V.
Mike V.
Nissan Technician
Subaru and Nissan factory training.
9,482 satisfied customers
2000 Nissan Altima: 2.4L..SES light but idles poorly 20..tester..p0171
I have a 2000 Nissan Altima with 2.4L engine. It hasn't fault coded with an SES light but idles poorly 20-30 seconds after a stop. I ran the OBDII tester on it and got a pending P0171 and P0325. Perfo… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
1999 Nissan Frontier: 3.3L V-6, 4 wheel drive...Knock Sensor..Circuit
I have a 1999 Nissan Frontier. 3.3L V-6,XXXXX I have a (P0325 Knock Sensor 1 Circuit Bank 1) code. Everything I've read indicates the Knock Sensor is under the upper intake maniford. I've removed the … read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
2000 frontier: dtc 325 knock sensor fault..idle timing advance..acts
2000 frontier has dtc 325 knock sensor fault wont idle timing advance is all over the place acts like a mass air sensor.39616.7435168634… read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
gas mileage down quite a bit..autozone..knock sensor..misfiring
Hi. engine started to run rough at around 2600rpm. gas mileage down quite a bit after this. Went to autozone and was diagnosed as a bad anti knock sensor and one cylinder misfiring. Question is if thi… read more
Roy
Roy
Vocational, Technical or Trade Scho
5,421 satisfied customers
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.

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.

Show MoreShow Less

Ask Your Question

x