Nissan

Nissan Repair Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Nissan

I bought an 09 Altima from somebody who had recently had

Customer Question
the engine changed and was...

I bought an 09 Altima from somebody who had recently had

the engine changed and was having problems starting it. It would turn over but not start and I was not getting spark. He was advised by the dealer that it could be ecm or bcm but he didn't go any further with fixing it. This is where I come in. After eliminating the cam and crank sensors, I decided to order a ecm and have it programmed at the dealer. They got it programmed but said the car wouldn't stay running long enough to do the idle relean. I was a little confused when I picked it up b/c it was running fine with a slight stumble. I towed it back to my shop and started it again for a couple of minutes then turned it off. When I went to restart it, SAME PROBLEM. It turns over but has no spark. Now, let me say that I am getting a P2100 code, which may be related. I am ASE certified in engine electrical so I will understand any requests to use a volt meter.  I have also have a scanner with limited capabilities.
Submitted: 2 years ago.Category: Nissan
Show More
Show Less
Ask Your Own Nissan Question
Answered in 10 hours by:
11/13/2015
Nissan Mechanic: Ron, ASE Certified Technician replied 2 years ago
Ron
Ron, ASE Certified Technician
Category: Nissan
Satisfied Customers: 36,372
Experience: 34 years of automotive Repair
Verified

Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting 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.

The code P2100 can be set by any of the following,

  • Electronic Throttle Actuator (ETA)
  • Engine Control Module (ECM)
  • Engine Wiring Harness

    In order to determine which is failing you are going to need to do some testing, I have enclosed the test steps in the link below. Copy and paste the link to your browser to open and view them.

    https://dl.dropboxusercontent.com/u/104923897/P2100%20Nov%2013.pdf
Ask Your Own Nissan Question
Customer reply replied 2 years ago
Would you mind please opting out of the question. I appreciate your offer to help, but I had another question open regarding this where someone is helping me that has timed out and we are far beyond this step. I need him to join this question. Regardless, i don't need any additional help at this time. Although, it is appreciated. Please opt out.
Nissan Mechanic: Reggie Whiddon, Auto Mechanic replied 2 years ago
Reggie Whiddon
Reggie Whiddon, Auto Mechanic
Category: Nissan
Satisfied Customers: 166
Experience: Lead tech at river regions auto
Verified

Try swapping the throttle relay with another one in the ipdm (fusebox) clean the throttle body and do the relearn procedure,, if your scan tool has it, if not disconnect both battery cables rub them together for about a minute then hook back up, Now turn the key to on wait 10 sec turn off on again off again then on crank the car with all acc off and allow it to idle on its on if it doesnt crank again. after it runs and stabilizes drop trans in drive and let idle. The relays are prone for failure and a dirty throttle body will cause this, hope this helps

Ask Your Own Nissan Question
Ask Reggie Whiddon Your Own Question
Reggie Whiddon
Reggie Whiddon
Reggie Whiddon, Auto Mechanic
Category: Nissan
Satisfied Customers: 166
166 Satisfied Customers
Experience: Lead tech at river regions auto

Reggie Whiddon 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

638 satisfied customers

16 years of experience

Tim Mohr

Tim Mohr

ASE MASTER TECH

577 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

Marty

Marty

ASE Certified Technician

146 satisfied customers

ASE & Bosch master tech. 30 years experience.

Mike V.

Mike V.

Nissan Technician

9,283 satisfied customers

Nissan factory trained and Certified Subaru Technician.

Ron

Ron

ASE Certified Technician

36,372 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
New distributor new crank sensor no spark coming out of the
New distributor new crank sensor no spark coming out of the distributor … read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
98 nissan altima with new distributor and new crank sensor
98 nissan altima with new distributor and new crank sensor still no spark and also no fuse blown … read more
Jake
Jake
Vocational, Technical or Trade Scho
285 satisfied customers
20007 Nissan quest we are a mechanic shop we replaced the
20007 Nissan quest we are a mechanic shop we replaced the transmission because the valve body we got a used transmission from a junkyard after the replaced code po335 came out (crankshaft position sen… read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
I have 08 nissan rogue with starting problem. Battery is ok,
yes, battery is ok, fuel is ok, compression is ok, starter is ok it starts, stay on for 3sec, and shuts off everytime i've already replaced throttle body from a repair shop with genuine nissan part with idle relearn … read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
Second opinion] codes say crank sensor. I replaced that. no
Second opinion] codes say crank sensor. I replaced that. no change. check engine light on. When I finally get vehicle started, if I keep rpm up over 1500 and shift auto trans gear by gear both up and … read more
Mechanic01
Mechanic01
1,171 satisfied customers
Codes say crank sensor. I replaced that. no change. check
codes say crank sensor. I replaced that. no change. check engine light on. When I finally get vehicle started, if I keep rpm up over 1500 and shift auto trans gear by gear both up and down, keeping th… read more
rpmdiag
rpmdiag
High school
7,119 satisfied customers
Cranks but no start. 2004 Maxima. Changed the crank sensor.
cranks but no start JA: Will the headlights turn on? Is the battery fully charged? Customer: yes JA: What is the model/year of your Nissan? Customer: 2004 Maxima JA: Are you fixing your Maxima yoursel… read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
Changed cam and. it cranks but will not start crank sensors.
changed cam and. it cranks but will not start crank sensors. car will not start … read more
Jake
Jake
Vocational, Technical or Trade Scho
285 satisfied customers
P0335/p0725.. Just replced crank sensor and mass airflow on
Just replced crank sensor and mass airflow on a 2006 altima 2.5. … read more
David Craig
David Craig
OWNER/MECHANIC
Associates
3,952 satisfied customers
Where is the crank sensor located. Yes car won't start it's
where is the crank sensor located. JA: Okay, I'll connect you to the mechanic to help find that for your Nissan. Before I do, is there anything else you want him to know? Customer: Yes car won't start… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
I have a 350z n I 've replace fuel filter, crank sensor
I have a 350z n I 've replace fuel filter , crank sensor ,both camshaft sensors .every time I replace a part it run$ #or about 8 min then shuts off … read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
I changed fuel pump cam and crank sensor but the car will
hi there i changed fuel pump cam and crank sensor but the car will start idle a few seconds and die, and if i try and give it gas it will also die … read more
Mike V.
Mike V.
Nissan Technician
High School or GED
9,283 satisfied customers
Cranks but doesn't run, changed the crank sensor, Won't
I can touch the fuel pump connections while turning the key and the pump doesn't seem to be working … read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
01 maxima wont start. Replaced both crank sensors ,cam
01 maxima wont start. Replaced both crank sensors ,cam sensors still not getting fire at coils … read more
Mike V.
Mike V.
Nissan Technician
High School or GED
9,283 satisfied customers
Change the crank sensor and starter, now it will not run at
change the crank sensor and starter, now it will not run at all. what am I missing? … read more
3pac2222
3pac2222
nissan master auto tech
Associate Degree
2 satisfied customers
It wont start i replaced the starter crank sensor battery
it wont start i replaced the starter crank sensor battery and the TPS sensor and still wonyt start its getting spark and fuel i dont understand please help … read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
Got codes p0725, p0335, we replaced crank sensor, ran for a
got codes p0725, p0335, we replaced crank sensor, ran for a couple of days then started doing the same thing this time p0113 and code p0304 came up with prior codes. I have 2005 Nissan Altima 2.5… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
4,018 satisfied customers
1996 altima 2.4l codes 325 335. no power to crank sensor the
1996 altima 2.4l codes 325 335 . no power to crank sensor the wire to it is dead. could one make the other look bad? … read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 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