chuds1

Very True. Thanks Alex.

Hi All Just want to say a big thanks to Cougar Store for supplying me with a set of Eibach 20mm wheel spacers. What a difference its made, wish I had done it a lot sooner. The car really needs lowered now, hopefully get a set of lowering springs soon.

At Last I flushed the cooling system out today. I removed the thermostat and flushed clean water through the system. Refilled and bled and no more ticking noise. Great.

OK Alex, this has not been done. I'll have it booked in to get the system flushed. I want be able to get it done for about a week so i'll keep you posted with the results. Thanks again for your help.

Its all the one system and all thats been done is bleeding to remove any air. What do you mean by back flushing? I thought that was the same as bleeding the system.

Hi Alex Yes i've had the cooling system bled as you pointed out everythings great but then the ticking noise returns within about a day. I don't know why i'm getting air in the cooling system Thanks again Alex

Heres a reply i got from another Z member on my other post: Greatings chuds1, I performed a Google search for "350Z + clicking noise + 3500 rpm" and your post emerged. I have '08 Nismo (#0778) that just turned over 4000mi. The solenoid clicking sound you describe from the left side of the dash is happening on my Z too. I thought it was related to the rev limiter I had set @ 4000 rpm's, but after resetting it to my tach red line, 7500 rpm's, the clicking noise continues to start at 3500-3800 rpm's and increases in speed the further I increase RMP's in each gear. I have an appt. next week with the local dealer to get the service rep to ride with me to try and debug the problem. You and one other person on the 350TECH.com forum have posted similar symptoms. As soon as I find out the problem I will provide information back to you. Regards, EatMyDuZt Hi chuds1, I just wanted to follow up on the clicking noise from the dash. Took mine into the local Nissan stealership yesterday, one of the mechanics road with me, but before I even left the lot he had already diagnosed the problem from my description of the noise. He said he had another Z in with a similar issue. So instead of getting out on the road, I just sat there on the lot and rev'd the engine to > 3500 and the noise occurred. "Yep, he said, heater core needs back flushing". He then went on to explain that the noise is caused by a valve flapping and back flushing the heater core resolves the problem. Luckily mine is still under warranty so it didn't cost me anything, but everything is back to normal. I would have never expected that a noise such as that would be caused by the heater core. It sounded electrical to me! Good luck on the resolution, keep us informed! EMDuZt

Adam Step 11 on the list says if a noise is heard repeat the bleeding proccess. When i'm sitting in the car i think this is the noise i can hear coming from behind the dashboard at about 3000rpm. I will try and bleed the system again. Thanks for your help.

Im sorry guys i felt that the message was cheeky and if your going to be cheeky what reaction are you expecting too get back. Sorry.

Thanks Adam for that more than helpful comment. As you have so kindly informed me to look for a real mechanic maybe you should look for someone that can help you read English. The "clicking" as you put it IS NOT COMING FROM INSIDE THE CLUSTER........................................ MMMMM I can't quite remember where the engine is in the car.......................Any idea's Adam.

I've been down this road for a while now. I have the service manual and in the section for bleeding the cooling system it states that if you here ticking noise at about 3000rpm there is air in the system. I can get the noise to go away but it comes back again.

Yes the car is totally standard.

Hi All Need help again. I had a strange ticking noise at about 3000rpm from behind the speedo housing. It was pointed out to me that it was air in the cooling system causing the ticking noise. All i had to do was bleed the system and the noise would go away. Sure enough i bled the system and the ticking noise went away. However only for about a day then the ticking came back. I've bled the system many times now, ticking goes away then comes back. Does anyone have any ideas how i could be getting air into the cooling system? I'm stumped The radiator cap seal looks perfect aswell as the air bleed plug seal. Thanks for your Help Chuds1

Thanks for the Link Sarnie. Much Appreciated.

Digsy your right, I'm just a real lazy bam.