My partners car won't start

[Danniboo]

My partner's 2004 350gt skyline won't start we just started it to move it into the shed then we went to turn it on again and now it won't start we have lights coming on and everything but won't crank all it does is buzz 

We have tried the starter motor it's not that 

Check fusses not that 

And we have checked the battery not that 

And also check fuel pump it's not that 

This has just happend out of no where it hasn't done this before and it's our daily 

[sonicii]

It does sound like a battery, when you attempt to crank, do the lights on the dash stay on at full brightness? or do they go very dull/off?

If they stay on full, it points more toward the starter motor, if they go very dull, then look more toward the battery.

How have you eliminated the above items?  replaced them?  tested them?

[Rusty Nuts]

1 hour ago, sonicii said:

it points more toward the starter motor

Whoa back up son, the starter motor is actuated by a relay have you checked the relay? Have you applied power directly to the starter motor? Does it rotate? Does the solenoid actuate ? Does the relay click, or is that your Buzzing sound. Are you sure the battery is ok, you must load test batteries a simple voltage measurement is not good enough.

[Rusty Nuts]

Took 10 seconds on google to find

Edited December 16, 2020 by Rusty Nuts
additional information

[Rusty Nuts]

V35 Coupe Fuse Box With Pics

By ogz007, February 12, 2009 in VQ Series - V35, V36 & Infiniti

 

Try searching on this very forum.

[sonicii]

On 12/16/2020 at 10:33 PM, Rusty Nuts said:

Whoa back up son, the starter motor is actuated by a relay have you checked the relay?

For sure, when I say 'point toward the starter motor', I don't mean it will be the starter motor, but including all the components associated with it, including relays, wiring, grounding, etc.

[MrStabby]

FWIW my M35 cranks hard even when it doesn't have enough electric power to start. First thing i'd do it try a jump start after double checking battery connections and charge. IIRC the battery should be 12.6 volts when fully charged.

[MoMnDadGTR]

just making sure you have checked the connections to the starter that the nut or clip may be loose? wiring maybe to the plugs to the starter. and yeah of course make sure you have voltage or try boosting it with another vehicle. kick the bitch a little bit.