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P0335/p0725.. Just replced crank sensor and mass airflow on

Customer Question
P0335/p0725.. JA: What is the model/year...
P0335/p0725..
JA: What is the model/year of your Nissan?
Customer: Just replced crank sensor and mass airflow on a 2006 altima 2.5.
JA: Does the vehicle stall at low speeds? Does it sputter?
Customer: Coming back to life after blowing engine last year.
JA: Are you fixing your Altima yourself? What have you tried so far?
Customer: No power at highway speeds. Yes i replaced the engine myself amd did both sensors myself just now
JA: Anything else you want the mechanic to know before I connect you?
Customer: Moy that o can think of
Submitted: 8 months ago.Category: Nissan
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Answered in 2 minutes by:
4/8/2017
Nissan Mechanic: david craig, ASE Certified Technician replied 8 months ago
david craig
david craig, ASE Certified Technician
Category: Nissan
Satisfied Customers: 4,211
Experience: owner/mechanic at 3D Automotive
Verified

Hi Im David, did you check the wiring and voltage, signal and ground to each of the sensors before replacing them?

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Customer reply replied 8 months ago
Voltage no.visual yes. Blew engine yr ago. Changed can and crank them. Back on road first time Monday..no issues or leaks. Tuesday I was hitting 4000 rpm and only doing 30. Came home swapped cars. And knew it was crank again. Replaced and drive and still no power..p0335 and 725 still
Customer reply replied 8 months ago
Idle bouncing between 1500 and 500..stalled out a couple times
Customer reply replied 8 months ago
Its an 06 altima 2.5..sorry for the delay
Nissan Mechanic: david craig, ASE Certified Technician replied 8 months ago

ok. soory for the delay. my shop is crazy today

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Nissan Mechanic: david craig, ASE Certified Technician replied 8 months ago

im going to send you the wiring prints for those 2 sensors. you need to check the wiring

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Customer reply replied 8 months ago
Ok...very frustrating. I've out on 3 crank sensors on this car since I've owned. Changed the cam too.
I'm borrowing a car and need mine to give this back. It's been a tough year.
Nissan Mechanic: david craig, ASE Certified Technician replied 8 months ago

crank sensor white wire 12vdc black wire=ground red/yellow = 12vdc

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Nissan Mechanic: david craig, ASE Certified Technician replied 8 months ago

hows it going?

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Nissan Mechanic: david craig, ASE Certified Technician replied 8 months ago

do you still need assistance?

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Customer reply replied 8 months ago
Sorry. I work in the the automotive aftermarket and have been slammed the past 3 days. I have to get a volt meter today. I will see what it looks like this evening. I'm at a loss as to why this happened. I'm not driving the car as to avoid a second blown engine. More and more research has shown that this yr is full of issues. I do believe the cause of the first now up was an undetected head gasket leak.
Nissan Mechanic: david craig, ASE Certified Technician replied 8 months ago

ok. Well keep me posted. Thanks

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Nissan Mechanic: david craig, ASE Certified Technician replied 8 months ago

hows it going?

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Customer reply replied 8 months ago
Ok .you know the business..parts and repair sides...crazy busy week. I am getting into it here in a little not. Got a couple sets of hands coming to see what we can see. If you give me a few hours I will update with all we find and experience. Thank you for all your help this far.
Nissan Mechanic: david craig, ASE Certified Technician replied 8 months ago

ok. sounds good

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Customer reply replied 8 months ago
All the ranges check out. Not visible damage. 3 morw throttle position sensors. 1 I am 2 aftermarket. 1 aftermarket had the prongs on the inside of the sensor bemt up. Swaped it 37th the oem same result. No speed and no power in take off. Swaped the own for the aftermarket and same result. So at this point I have a total of 5 crankshaft sensors replaced a long with a mass airflow and no results. I am of officially at a loss I explain... Very very disappointing to say the least.
Customer reply replied 8 months ago
Oem
Nissan Mechanic: david craig, ASE Certified Technician replied 8 months ago

p0335

40cb76ba-d402-48ae-abb5-...PNG40cb76b...PNGea47aa2c-dcdb-4047-aa3e-...PNGea47aa2...PNGcf483c4e-9ae6-443f-8b38-...PNGcf483c4...PNGbdd76796-a986-49e5-80c9-...PNGbdd7679...PNG
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Nissan Mechanic: david craig, ASE Certified Technician replied 8 months ago

cont'd

3a068b92-6574-49f8-85a9-...PNG3a068b9...PNG080c67c7-5638-462b-ad1b-...PNG080c67c...PNGbfca4ac2-2f53-4d85-9d7e-...PNGbfca4ac...PNGe224b761-a376-46ed-9001-...PNGe224b76...PNG
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Customer reply replied 8 months ago
Checking those now.
Also simultaneously p0725..engine speed not being communicated to the TCM to shift correctly based in engine speed.
Nissan Mechanic: david craig, ASE Certified Technician replied 8 months ago

crank sensor has a lot to do with engine speed. on some vehicles its actually called the engine speed sensor.

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Customer reply replied 8 months ago
Roger that.
Nissan Mechanic: david craig, ASE Certified Technician replied 8 months ago

let me know how it goes, then if you cant find anything with the 335 diagnostics. we will do the diagnostic for 725

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Customer reply replied 8 months ago
Even though it checked out and visually seems not to be damaged I am going to look into a pigtail for the crank sensor.
Even I can cut and splice.
Nissan Mechanic: david craig, ASE Certified Technician replied 8 months ago

not always a bad idea. but these 2 codes are going to be related.

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Customer reply replied 8 months ago
More I look I to it the more I see that's true. I am hyper vigilant due to the blown engine already. Since them I have come to find out how many problems this model has.
Nissan Mechanic: david craig, ASE Certified Technician replied 8 months ago

its not Nissans best year for the Altima 01-07 lots of issues.

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Nissan Mechanic: david craig, ASE Certified Technician replied 8 months ago

please accept the answer and leave a 5 star rating for me if you are satisfied with my assistance. I will stay with you until the problem is fixed. no worries. Thank you.

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david craig
david craig
david craig, ASE Certified Technician
Category: Nissan
Satisfied Customers: 4,211
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Experience: owner/mechanic at 3D Automotive

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