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2007 Nissan Frontier - won't crank or start. I've previously

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replaced the ecm relay, but...
2007 Nissan Frontier - won't crank or start. I've previously replaced the ecm relay, but am now experiencing the same symptoms. Replaced the ecm relay again, ipdm, and crankshaft position sensor but did not fix the problem.
Battery is fine and lights do not dim when turning key. No sounds coming from engine except for buzzing that appears to come from the throttle body. Cabin fuses are good.
Submitted: 1 year ago.Category: Nissan
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Answered in 4 minutes by:
11/20/2016
Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago
david craig
david craig, ASE Certified Technician
Category: Nissan
Satisfied Customers: 4,504
Experience: owner/mechanic at 3D Automotive
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Hi Im David, does the security light go out when trying to start?

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Customer reply replied 1 year ago
Hi David, yes the red light with key goes away when the key is inserted and turned to start.
Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

ok. when the key is turned to the run position does the check engine light come on?

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Customer reply replied 1 year ago
the check engine and various other lights are lit. I checked with a basic scan tool and received the CAN code U1000.
Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

ok. thanks

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Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

even this tsb is for 2005-6 i thinks its worth checking out and applying the same steps.

http://www.autocodes.com/uploads/nissan/NTB06-009a.pdf

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Customer reply replied 1 year ago
ok, I'll give it a try. It's getting late, so I'll probably wait until tomorrow. This wouldn't be related to the IPDM replacement?It might help to provide some more detail from my end as well. The first time this happened, I pressed the gas pedal a couple times then tried turning the key several times, and managed to get it to start. Also, soon before it it reached this state, I would experience a jolt from the transmission when letting off the gas at low speed.In addition, I replaced the radiator cap due to leakage. From my own research, I'm aware this model has radiator issues that could leak into the transmission. Should I be concerned the TCM is shot?
Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

I wouldnt worry about that yet. but check the coolant and make sure tranny fluid isnt present. those tranny cooler lines are huge problems.

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Customer reply replied 1 year ago
ok, I checked the grounds inside the engine bay and everything looks good. Also, the readings did not match the chart from your service bulletin.I checked the tranny dipstick and it looked pretty dirty. Not cloudy, but had pieces of dirt or metal on it.
Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

what color was the fluid?

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Customer reply replied 1 year ago
From the dipstick, it appeared brownish. I can't see much from the radiator's overflow tank. I did add radiator sealant a few months ago when I first noticed the leak. That might explain the dirt type substance.
Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

the tranny fluid needs to be bright red and not smell burnt. and you should NEVER add any knid of sealer to the cooling system. it will harden, break up and clog vital coolant passages damaging the water pump also.

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Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

you need to drop the tranny pan and see what else metal is laying on the bottom.

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Customer reply replied 1 year ago
Good to know. I thought it might be good as a temporary solution until I replaced the radiator.Ok, I checked the tranny stick again and its a light brown color with a redish tone. Also, it did not have a distinct smell. The dirt was mostly on the first couple pulls. The truck is currently not in spot to due any heavy work, thus I can't drop the tranny pan.
Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

ok, well i still have to recommend to drop it and check for metal and change fluid and filter

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Customer reply replied 1 year ago
Ok, will do when I get a chance. Although, I still need to figure out why it wont start and that won't make a difference.
Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

can you hear the fuel pump run when you turn the key to the run position?

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Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

just checking in to see how its going

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Customer reply replied 1 year ago
Sorry, things have been busy with the holidays. I checked this morning, and I can hear the fuel pump engage when turning the key. It is functional.
Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

ok. try to start in in neutral

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Customer reply replied 1 year ago
Already tried that, no luck.
Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

so when you try to start, theres nothing? no noise whatsoever?

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Customer reply replied 1 year ago
Correct. No sounds, no clicking, nothing. As I mentioned originally, I had the same symptoms before and replaced the ECM relay. This fixed the problem, but now it doesn't seem to work.
Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

check the connections at the starter. big cable and smaller solenoid wire. or we can pull the starter rerlay and jumper it, to see if we get it to at least crank

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Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

do you still need assistance?

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Customer reply replied 1 year ago
I'm on vacation at the moment and will try jumping the starter when I return on Thurs.
Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

ok. thanks

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Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

Do you still need assistance?

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Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

just checking in to see how its going

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Customer reply replied 1 year ago
Can you provide some detail on jumping the starter directly?
Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

do you have power at the starter?

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Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

do you still need assistance?

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Customer reply replied 1 year ago
I can't look at this everyday - I have a job.I asked for more details on jumping the starter. Do I connect the battery to the starter directly?
Nissan Mechanic: david craig, ASE Certified Technician replied 1 year ago

we all have jobs. just trying to do mine. plus run a shop.

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