Won't turn over

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
93 Z32
Posts: 37
Joined: Sun May 06, 2012 3:06 pm
Car: 93 300zx N/A
Location: Baton Rogue, La

Post

Car won't start
Just replaced 2 weeks ago,
Injectors, vacuum lines fuel pressure regulator, PTU, PTU sub harness, ignition module, NGK plugs, coil packs, pcv hoses

It's kinda strange that everything in the car comes on, lights, dash, fuel pump primes, but my radio isn't coming on and the car isn't cranking over. This happened a few weeks ago, and I replaced all of the above. Car has 126,000 miles. Scheduled to have timing service done on Friday. Can't get it done if I can't start it and get it there. Thinking that it's possibly the starter or cas. It's not even turning over. And radio has no power to it. Which is odd, especially when everything else comes on


User avatar
BigTDogg (MA)
Posts: 4194
Joined: Wed Aug 29, 2007 8:26 am
Car: 1990 Nissan 300ZX TT
Location: Boston MA

Post

Check to be sure the white wire is attached at the positive terminal on the battery.

93 Z32
Posts: 37
Joined: Sun May 06, 2012 3:06 pm
Car: 93 300zx N/A
Location: Baton Rogue, La

Post

Ah I found out why. I had the upper radiator hose blow out last weekend. It sprayed right into the PTU harness end that connects to the top of the PTU. Coolant got in and fried the PTU. Just replaced the damn thing 2 weeks ago. Had another overnighted from Z1 yesterday

93 Z32
Posts: 37
Joined: Sun May 06, 2012 3:06 pm
Car: 93 300zx N/A
Location: Baton Rogue, La

Post

Well obviously that wasn't the reason why.
So I dug deeper. I disconnected the anti theft control box under th passenger side dash. Reached over, car fired right up. Next morning(which was this morning), it started over again. Now it won't start. I'm baffled. I've replaced the connections to the battery. Another PTU. Another ignition module. Reset everything. And the box to pull codes, isn't blinking at all, so it seems to be dead. Have it scheduled to be towed to the shop tuesday morning. Thinking could possibly be nuetral Safety switch. Or some fried wiring. But EVERYTHING in the car is getting juice. I can here the ignition module in the driver side front fender clicking.
What I'm also hearing when I turn the key, there is a clicking sound coming from on top of the transmission right beneath the shifter(automatic-autotragic). I've never heard this clicking sound until now. Never heard it on any of the other 21 cars over ever owned....until now. And I've owned this one since last July. And this is the first I've heard this sound coming from underneath the shifter


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