Nissan

Nissan repair questions? Ask a mechanic for answers ASAP

Ask an Expert,
Get an Answer ASAP!

I have a 2005 350z changed motor and now it cranks idles but…

Customer Question
I have a 2005...

I have a 2005 350z changed motor and now it cranks idles but has poor acceleration no power jumps in and out of gear

Mechanic's Assistant: Is the power loss consistent, or does it fluctuate?

Consistant never picks up fully

Mechanic's Assistant: Are you fixing your 350Z yourself? What have you tried so far?

No im not and it has no codes so we stuck

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

Thats it

Submitted: 8 months ago.Category: Nissan
Show More
Show Less
Ask Your Own Nissan Question
Answered in 4 hours by:
9/18/2017
Nissan Mechanic: Matt, Engineer replied 8 months ago
Matt
Matt, Engineer
Category: Nissan
Satisfied Customers: 23,085
Experience: BEng hons Mech engineering, worked in auto industry for 22 years on engine, transmission and suspension design
Verified

Hello

This sounds like a lack of fuel and could be a lack of fuel pressure from the electrical pump at the tank.
1st thing to try is to remove the fuel filler cap and then flick the ignition on whilst listening for the brief ‘buzz’ of the pump

If the connections to the pump are corroded or damaged then the pump could stop at any time or could not be running at full speed. Check that its relay switches in and out and the relay contacts are clean and bright – replace the relay if in any doubt and do the same for the fuse,
Ideally measure the pressure at the injector rail (should usually be around 3Bar / 45psi +) and if this is low check the pump as described and also consider changing the fuel filter as if this partially blocked this too will reduce pressure.

You can also get this issue with contaminated fuel , if there’s water or dirt in the tank then either the petrol floats on top of the water or the filter sock on the pump is choked up – so if the other things check out then I’d consider pulling out the fuel pump and cleaning the filter sock

And one other thing to try is to loosen off the fuel filler cap, as there’s a 1 way valve built into the cap to let air into the tank and so prevent a vacuum from being created as the fuel leaves the tank to the engine
If this helps then replace the cap with a new item

Ask Your Own Nissan Question
Was this answer helpful?
Ask Matt Your Own Question
Matt
Matt
Matt, Engineer
Category: Nissan
Satisfied Customers: 23,085
23,085 Satisfied Customers
Experience: BEng hons Mech engineering, worked in auto industry for 22 years on engine, transmission and suspension design

Matt 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

676 satisfied customers

16 years of experience

Tim Mohr

Tim Mohr

ASE MASTER TECH

589 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

Marty

Marty

ASE Certified Technician

154 satisfied customers

ASE & Bosch master tech. 30 years experience.

Mike V.

Mike V.

Nissan Technician

9,365 satisfied customers

Nissan factory trained and Certified Subaru Technician.

Ron

Ron

ASE Certified Technician

562 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
Check engine light came on, said misfire on cylinder 1.
Check engine light came on, said misfire on cylinder 1. Started by changing spark plugs. A few days later light came back on had codes pulled, same thing. Ignition coil, p300 i think was the code. Had… read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
When I first start my 2012 Nissan Alima there is a sound
When I first start my 2012 Nissan Alima there is a sound resembling fan that may be hitting on something as it turns but once I get going it goes away. It was suggested to me that once the car starts … read more
Mechanic01
Mechanic01
2,590 satisfied customers
Left turn signal blinks fast after 5 seconds but works okay
left turn signal blinks fast after 5 seconds but works okay in hazard mode … read more
Jake
Jake
308 satisfied customers
Are these Nissan rims good quality? I usually hear people
Are these Nissan rims good quality ? I usually hear people say the factory rims are usually horrible quality however I like Sticking to factory specified stuff for my car.I love this set of Nissan whe… read more
Tim Mohr
Tim Mohr
ASE MASTER TECH
Master's Degree
589 satisfied customers
My battery and brake light flicker - especially when I'm
My battery and brake light flicker - especially when I'm stepping on the gas or going at lower speeds. The alternator and battery are new … read more
Jake
Jake
308 satisfied customers
2011 Nissan Pathfinder. When driving the tailgate open
When driving the tailgate open message will randomly come up and go away. stopped and opened the liftgate and closing it hard... but message will randomly appear and go away. We can hear the locks engaging and un-engaging repeated and randomly with any interaction. We replaced the key fob battery this evening … read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
2006 Nissan Pathfinder CD works sounds good but radio can't
2006 Nissan Pathfinder CD works sounds good but radio can't find a station and no sound … read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
I have a 1987 Nissan 300 ZX, non turbo with 96K miles. The
I have a 1987 Nissan 300 ZX, non turbo with 96K miles. The AC will, after a few minutes, give out a hissing noise, and stop cooling first and then cut off completely.Cool air comes out iimmediately wh… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
HAVE several codes
HAVE several codes PO300,P1778,P0131,P0101,P1722,P0746,P0703,P1701,P0868. WAS driving and the RPM'S would go up but the speed would not. and it is making a whinning noise, the transmission fluid was l… read more
David Craig
David Craig
OWNER/MECHANIC
Associates
5,278 satisfied customers
Can i adjust lock down to change at a higher speed cheers
can i adjust lock down to change at a higher speed cheers wayne … read more
Matt
Matt
Engineer
23,085 satisfied customers
I have a 87 Nissan D21 with the I4 pickup truck with TBI. I
Hello I have a 87 Nissan D21 with the I4 pickup truck with TBI. I am not getting a pulse a the injectors, I know the crank position sensor is on the distributor. I their any way to test it to make sur… read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
C1C97 & C2989 what do they mean. 2008 Nissan Maxima. I don't
I don't have service manual I just need to know what the codes mean … read more
Jake
Jake
308 satisfied customers
I put gas in my car yesterday, and now today it is ideling
i put gas in my car yesterday, and now today it is ideling rough, and when i shift from park to drive or reverse it stalls on me. I've taken it to my local garage and they can't help me because it's n… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
No signal neutral safety. hit key wont crank no signal going
No signal neutral safety. hit key wont crank no signal going to starter … read more
Edward Clayton
Edward Clayton
Associate Degree
1,033 satisfied customers
The immobilizer light is the only light blinking my car is
The immobilizer light is the only light blinking my car is completely off I can't use my key to unlock or turn on the car … read more
3pac2222
3pac2222
nissan master auto tech
Associate Degree
2 satisfied customers
Trying to figure out how to replace the trip computer bulb
Trying to figure out how to replace the trip computer bulb in a 2014 murano … read more
3pac2222
3pac2222
nissan master auto tech
Associate Degree
2 satisfied customers
2006 Nissan Altima 2.5l check engine code p1148,p0031
2006 Nissan Altima 2.5l check engine code p1148,p0031 replaced both oxygen sensor still check engine light on even after clear code come with in a minute do you have an idea … read more
FixUrNissan
FixUrNissan
Shop Forman / Lead Tech / Parent
Vocational, Technical or Trade Scho
1 satisfied customers
No A/C. The 10amp fuse is fine. How does one check the Freon
My scan tool says the relay is not on. The indicator light on the console lights up … read more
Jake
Jake
308 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