Dicky

Many thanks Alex I'd never have thought they would provide this info for fear of the cost involved for the manufacturer to correct these problems. I've read a bit lately about the 370 and as far as I can tell many seem to suffer common problems, oil gallery gaskets, boot lid not opening first time, clutch pedel noise, clutch judder (csc related I believe), steering lock problem, are just a few I've discovered. I doubt if any of these are covered under recalls.....but I will certainly ask! Edit I'd be interested to know how the yanks can get hold of published lists while we poor Brits can't

Anyone know if these are available anywhere for European cars. I assume those released for USA cars will not apply.

Yes you can here it going on and off with the accelerator and finding it will be a pain. If you could get hold of a "Mechanics Engine Diagnostic Stethoscope" you could have a mate hold it in the gear lever area, then somewhere on the bulkhead and behind the seats to help locate it. A rolling road would be useful to check around the engine bay area. I had thought to get the back of the car up onto axel stands, put the car in gear to drive the wheels then go around listening, but on reflection that would be a bit dangerous, best to pay for a rolling road diagnostic. Good luck

Sorry to here that, sounds expensive! Any idea what caused it?

Yep I've got the car booked in for Monday to have the oil gallery gadgets upgraded. £668 all in, inc vat

Getting my 370 HR done this Monday at Falcon Performance for £668 all in (inc VAT)... Thought about doing it myself but decided against, due to lack of suitable facilities, not knowing what could go wrong (let's face it we all start off believing it's going to be easy) and if you get something wrong you've got to strip it all down again, plus you've got no warranty Thought of fitting a pressure gauge and monitoring it, but you can bet on the day you decide to give the car a go you won't be monitoring and if the downside is a new engine + fitting your looking a big bucks. The root cause is the gaskets and for peace of mind it's worth getting it done. It's also a selling point when that day arrives

BUGGAR Alex, if I wasn't worried before I am now! Thanks for the warning though. Do you know if the Consult lll gear held by the dealers can determine accurately if the throttle valve motors and feedback position sensors are in full working order ? If so I'll put it in to have them checked. The problem is the diagnostic gear is only as good as the tech using it!

Found it. It's derived from the ABS Actuator & Control Unit and sent to the Combination Meter and ECU.

Got a cruise control issue Alex, mentioned in another post. On the straight at 30 mph, no issues. Going down hill at 30 mph in 3rd or 4th again no issues. BUT when coming out of the down hill and straight into a hill the car slows up and you can see the speedo drop from 30 to about 25 and only then does it seem to wake up and apply power to get back up to 30. Looking at the workshop manual either the road speed signal to the system (derived from the ABS system) is sluggish for some reason, or the ECU is sluggish (unlikely) or the ECU is sending an increase speed request to the throttle body motor and if it's sluggish it could be the cause. Not sure though but thought it's a good easy staring point. Not sure if the ECU uses only one throttle body controller in cruise control mode or both to maintain requested speed.?

Apologies...Posting quite a bit lately having just bought a 370 in need of some TLC. Anyone done this on the 370 yet. Is it more or less the same as the 350 ref disconnection of battery , cleaning and calibration procedures. If you disconnect tha battery is it still necessary to do the cals? When you disconnect the battery does it affect any other car systems. On my 350 all you lost were radio stations.

I made mine with some welding wire and crimp terminals. Easy job but it may be difficult to get hold of the crimping tool, although tool hire shops should have them. The 350 section ran a thread and a forum member (can't remember name) supplied) info on wire lengths and mounting positions. The Wire lengths would be different for the 370 but itmshouldnt be difficult to figure new lengths out.

That supprises me cos it made a noticeable difference on mine! It To smoothed out the engine out quite a lot and I was just wondering if the 370 would benefit?

BUGGAR Rich ! I Just get used to how one engine works and then they go and change it ! I'm sure this is a Jap conspiracy against us Geordies, me in particular! I'm now going to have to watch this lots of times to get my head around it. Wish I'd been born clever instead of just good looking. As it happens i stumbled across this vid clip last night and could'nt get my head around it at all. So what do the two throttle valves do these days. Have the Japs just left them in just to confuse me even further.??

Anyone tried to fit this on the 370. When I fitted it to my 350 it really smoothed out the engine running. Just bought a 370 and was wondering if it works just as well?

Good question! If I'm not mistaken it was 3rd possibly 4th but think 3rd

Manual

Oops should have read the link first before offering a sloppy kiss Alex. Sorry but the kiwis is out now cos I'm thinking the car speed signal must come from something like an inductive sensor mounted at the gearbox or maybe a wheel. I'm asking this cos it could possibley have an impact on a cruise control problem I've mentioned on another of my posts. Apologies if my post was misleading.

Many thanks Alex, your a star as usual. In fact if you were better looking I might just kiss you hard on the lips ha ha

I've looked into how CC works. The system inputs are a switch on the brake and clutch pedals, the controls on the steering wheel, a speed sensor ( on the gearbox I believe) the accelerator potentiometer, and a feedback sensor on the throttle valve control feeding back position. The only control output as far as I can tell is the throttle valve drive motor to position the throttle disc to regulate air intake. As I say the speed when climbing the hill drops off slowly down to around 25 mph when the control system seems to wake up and starts to apply more power. The only things I can think would cause this sluggishness are a dodgy speed input signal (but the speedo would probably show signs) a slow processor in the ECU (which I doubt) and the throttle valve drive motor. Has anyone come across problems IE stiffness, dirt ingress etc that could slow this arrangement down.? If it's a common problem then maybe it is just the ECU with a slow processor or something. I'd like to tine it up if poss because my 350z doesn't do this. Any further feedback welcome.

Had intermittent operation problem caused by incorrectly positioned brake pedal switch. When testing its operation I set it to 30mph on a flat road and it ran no problem......BUT....when I came to a down hill stretch followed immediately by a uphill stretch I noticed the car maintained 30 mph down the hill but when it started to climb up the hill the speed dropped off to about 25 mph before the car realised and started to increase the speed again to 30. Is this normal operation on the 370 or should it be a bit faster to increase the speed?

Anyone know where this is located. Is it the "input speed sensor" on the gearbox ?

Does anyone have any idea exactly what causes these gaskets to go. Is it .... general ageing Revving the engine too high when the engine and oil are cold High oil temperature following a track day or long journey Voodoo Other?

All 370z's from 2007 to 2012 when the gaskets were upgraded.

Having read up on most of the reliability issues I will be 100% getting this done as soon as money allows, it takes away as far as I can tell the only issue the VQ engine has in terms of premature death. From the sounds of the other posts about this by the time the oil pressure drop is noticed it may be too late anyway. I agree. As I've said before this has had me going around in circles,...replace the gaskets, fit a pressure gauge and monitor, all driven by this unexpected high cost to repair. But what cost should the engine blow! You could fit the gauge and forget to monitor it one day then give the car a sudden "blurt" on a clear road and "bang" the damage is done. As much as it costs and as much as it hurts, I've finally decided to get the work done. Hay ho better safe than sorry.

Yep your right VQ37VHR.