Hi everyone, I am new to this forum and just encountered a problem with my 05 g35 coupe, manual transmission. I decided to change the spark plugs and before i started I followed a DIY spark plug threads and I went ahead and removed the battery cables negative and positive first then went ahead and removed the bolts to get to the spark plugs. I finished putting in the spark plugs and all bolts and went ahead and plugged the battery terminals but my car wont start now! :/ my battery is good because the radio, interior lights work fine, can anyone please help me out? I would really appreciate this so much, thanks.

 

Is it cranking? Does it almost start? Could you describe the symptoms in a bit more detail please?

 

no crank at all, only lights, radio, and interior lights work.
would pushing the car and try to start it off 2nd gear work?

 

Assuming all you did was replace the spark plugs I would say you either shorted something out or the battery is drained. Try googling "how to diagnose a no-start." Did you disconnect the negative battery cable first? I once saw a guy short out his whole electrical system because he connected the positive and negative terminals of the battery - blew out his voltage regulator in the alternator too - had to replace the alternator.

 

also double check that you reconnected all the grounding bolts

 

I am pretty sure the battery is still good because the car was running good 30 min prior to not starting and the lights work fine..no start up or no crank.
I removed the negative cable first then i removed the positive afterwards...at the end when putting battery together, I put the negative then positive cable.

 

you really made 4 threads about this?
https://g35driver.com/forums/engine-...g35-coupe.html
https://g35driver.com/forums/tsb-tec...g35-coupe.html
https://g35driver.com/forums/general...g35-coupe.html
https://g35driver.com/forums/g35-cou...g35-coupe.html

? sheesh.

 

maybe you just did a simple mistake of forgetting to connect the coil pack to the harness. lol

 

Thats what i was first thinking but the car would still turn over if that was the case.

 

Make sure your ground cable on the battery is good and tight. I have seen interior work but wont start car because there is not a good ground.

 

check voltage of the battery first, if in the 12's you should be good. clean the battery posts and cables and reconnect.

 

I dont remember removing a ground cable from the battery but i will check that out, thanks.

 

Yes, I am thinking possibly battery low voltage just because it has an AAA battery intact and looks dusty and possibly old (that is how the dealership sold the car)which ive never seen such battery like this before..

 

Fuses and the ground wire is perfectly fine, and the car still wont start up..:/

 

If all this happened after you disconnected the battery there is a bad connection at the battery post's positve or negative its one of them