Nissan

Nissan repair questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

I keep getting a P0505 code. Sent in my ECM for

I keep getting a...

I keep getting a P0505 code. Sent in my ECM for repair/replacement, but they told me there is nothing wrong with it. Yet, my idle is completely out of wack. It idles at a 5 when in park, and when driving it idles and revs the engine from a 2-4 back and forth. I have replaced the IACV, the Throttle position sensor, and all the hoses/tubes. I have no idea what to do next. It will not pass emissions......due to the idling issues

Mechanic's Assistant: Does the vehicle hesitate during acceleration? Or maybe speed up suddenly when you aren't even hitting the gas?

Yies

Mechanic's Assistant: What is the model/year of your Nissan?

2001 nissan pathfinder It also will rev down like there is air in the gas line

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

Yes... we have replaced all of the intake exhaust systems... and was told that it may be an ECM issue. Which is wasn't.

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

Could it be sucking air somewhere? ok cool. thanks.

Show More
Show Less
Ask Your Own Nissan Question
Answered in 7 hours by:
3/6/2018
Chris(aka-Moose)
Chris(aka-Moose), Nissan Technician
Category: Nissan
Satisfied Customers: 52,620
Experience: 16 years of experience
Verified

Welcome, I'm Chris (aka-Moose).

  • THE TIME I AM ONLINE, 7 days a week normally online around midday and then late evening until early morning.
  • PHONE CALLS are automatically offered by the website normally after my first reply. I complete calls where I feel it is a benefit.
  • UPLOADED LINKS I SEND, if I upload dropbox links, they will open on a home PC, often they fail on a work PC, on a phone use the box on the top right of your phone screen for direct download.

Have you done any of the diag steps for the code?

Does 5 mean 500 and does 2-4 mean 2000-4000?

Ask Your Own Nissan Question
Customer reply replied 4 months ago
We have replaced the throttle body, IAC valve, tubing and cleaned everything. Replaced all gaskets and filters. The only thing we haven't done is check the engine intake manifold vacuum system...And yes, 5 means 5000 Rpms and 2-4 means 2000-4000. Rpms
Customer reply replied 4 months ago
It also speeds up at random and other times feels like its not getting gas

If you unplug the IAC is the rpm still this high?

Did you do an idle relearn?

Ask Your Own Nissan Question
Customer reply replied 4 months ago
No idea... I will have to do that and get back to you. I think we tried to do an idle relearn, but it wasn't working--hence the reason for sending in the ECM to get checked out.

Let me know when you do.

Ask Your Own Nissan Question
Customer reply replied 4 months ago
Will do.

Thanks

Ask Your Own Nissan Question

Hello, Chris here again,

I am checking in to make sure you got everything you expected from my response. If any part of my response is unclear, please let me know. It’s my goal to deliver excellent service, so if I've done that, please don't forget to give me a 5-star rating.You can still reply. I want to make sure you were pleased with what you paid for.

Thanks Chris

Ask Your Own Nissan Question
Customer reply replied 4 months ago
I will definitely give you a five-star rating... and will get back to you after I get my ECM back in my car and do another idle relearn procedure and unplug the IAC to check the idle...And thank you! I won't forget!

Thanks

Ask Your Own Nissan Question

Did you get your ECM back?

Chris(aka-Moose)
Chris(aka-Moose), Nissan Technician
Category: Nissan
Satisfied Customers: 52,620
Experience: 16 years of experience
Verified
Chris(aka-Moose) and 87 other Nissan Specialists are ready to help you
Ask your own question now
Customer reply replied 4 months ago
Unfortunately not yet... I am expecting it today or tomorrow, then it will be put in this coming weekend. I will get back with you then.

Thanks for the update.

Ask Your Own Nissan Question
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 Chris(aka-Moose) Your Own Question
Chris(aka-Moose)
Chris(aka-Moose)
Chris(aka-Moose), Nissan Technician
Category: Nissan
Satisfied Customers: 52,620
52,620 Satisfied Customers
Experience: 16 years of experience

Chris(aka-Moose) 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

52,620 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 problem with my 2001 Pathfinder SE. I had a code
I have a problem with my 2001 Pathfinder SE. I had a code for the IACV failing and eventually it died and I had to be towed. I already had the part so I changed only the stepper motor, the electrical … read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
I just had a new throttle body and a rebuilt ECU put on my
Hello. I just had a new throttle body and a rebuilt ECU put on my 2001 Pathfinder. While driving if I punch the accelarator my car hesitates and the RPMs bounce. Now whats wrong … read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
I talked to u before about a issue with a 2001 Nissan
Hi I talked to u before about a issue with a 2001 Nissan Pathfinder v6 3.5 liter vq35de were it was idle then stalled out it would crank but not turn over today I checked it I have fuel going up to th… read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
I have an issue with my 2002 Nissan pathfinder i just bought
Hi i have an issue with my 2002 Nissan pathfinder i just bought from the auction. i picked it up and test drove it and the next morning when i tried to start it, it will start and just cut off abruptl… read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
I started my 2001 1.8l nissan sentra this morning and it
I started my 2001 1.8l nissan sentra this morning and it idles at 2700 rpm and won't idle down. I had the Mass airflow sensor changed a few weeks ago. the code that came up after replaced was p0505 id… read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
In D, its idling high, ~1100 rpm, and tries to push through
In D, its idling high, ~1100 rpm, and tries to push through the brakes. In park or neutral, it constantly searches for the right rpm, staying between 1100 and 1800 … read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
Had a P0505 on my 2001 Maxima, tested the iacv and had no
Had a P0505 on my 2001 Maxima, tested the iacv and had no movement on it when I cycled the key on so I replaced it with an aftermarket part from amazon. After the replacement the engine idled high and… read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
Have 2001 Nissan Pathfinder. Earlier this year vehicle would
Have 2001 Nissan Pathfinder. Earlier this year vehicle would not hold idle and would stall. Mechanic replaced IACV. 3 months later vehicle started to do the same and while I was deciding what to do th… read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
We have a 2002 pathfinder in the stop right now they have
we have a 2002 pathfinder in the stop right now they have already replaced the fuel pump. we think it was not necessary. today we were told that the ecm was the problem why the car wont start. was the… read more
Jake
Jake
309 satisfied customers
Pathfinder: 2001 Nissan Pathfinder 4 x 4 Automatic 3.5 L. This
2001 Nissan Pathfinder 4 x 4 Automatic 3.5 L. This truck has a cold start issue. If I try to start it cold, it will start and die every time. If I pulse the throttle for about 10 seconds it will then … read more
Jake
Jake
309 satisfied customers
Just brought my 2001 maxima to a repair shop. Car had no idle
Just brought my 2001 maxima to a repair shop. Car had no idle but would start and rev smoothly.. They replaced the idle control module and air boot, plus a new battery. now they're saying it's the ecm… read more
Jake
Jake
309 satisfied customers
Maxima: I am working on a 2000 Maxima. It idles around 1200
I am working on a 2000 Maxima. It idles around 1200 and then when warmed it jumps up to around 1500 and then surges from 1450 to 1800 rpm. P0505 code is present. Resistance of IACV coil looked good at… read more
Jake
Jake
309 satisfied customers
2001 Nissan Xterra: $650.00 for further diagnostic
I have a 2001 Nissan Xterra with a 0505 code. I've been told by the dealer, after $100.00 inspection that I need to pay an addiutional $450.00 to $650.00 for further diagnostic. What was the first ins… read more
Jake
Jake
309 satisfied customers
2001 Nissan Maxima: few minutes..rpm..jumping..1500..throtle body
I have 2001 Nissan Maxima, parked at airport parking for 10 days in real cold. Last week came back turned ON and everything is fine. After few minutes of driving i noticed it is running on high RPMs'.… read more
3pac2222
3pac2222
nissan master auto tech
Associate Degree
2 satisfied customers
2001 Nissan Maxima: the IAC valve, is this correct
I have a 2001 Nissan Maxima that is spitting out code P0505. I have been told that the solution is to replace the IAC valve, is this correct.… read more
eauto
eauto
self employed
High School or GED
74 satisfied customers
2001 Nissan Maxima: Service Engine Light..die..few seconds..run fine
Car: 2001 Nissan Maxima - 120K Issue: Service Engine Light: P0500 code. Car would die when starting cold, unless the engine was revved up for a few seconds, then most of the time it would run fine. Ha… read more
HondaPlatinum
HondaPlatinum
High School or GED
148 satisfied customers
I paid through my credit card but havent recieved any answer
I paid through my credit card but haven't recieved any answer in one month. My car engine stops at cold start and car runs sluggish at low speed.… read more
Rixster
Rixster
Sr. Technician/Retired Owner
High School or GED
249 satisfied customers
2001 nissan: 3.0L..blew..radiator-water pump-thermostat..mass air flow
2001 nissan max,3.0L,has very fast idle,also blew out radiator,replaced radiator-water pump-thermostat,actually has 2 thermostats,also replaed mass air flow senser and had a dealer ship reprogram,supp… read more
Infiniti Nissan Specialist
Infiniti Nissan Specialist
Master Technician
Vocational, Technical or Trade Scho
915 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