SonicVQ

I have read a lot of articles talking about the VQ37VHR and high oil temps and I wanted to see where my temps were when the ambient temp is about 32.

As many of you may know, the pro version of the "Torque" app ($5) with the "Advanced EX for Infiniti" plugin ($7) will tell you items (PIDs) that the regular OBD-2 scanners can't see. You will also need an ELM327 OBD-2 bluetooth or wi-fi scanner. ($25)

Here are some of the more interesting PIDs:
-Camshaft advance angle for bank 1/2
-Camshaft valve duty cycle bank 1/2
-Injector duty cycle
-Fuel temp
-Mass air flow (usually part of generic OBD-2, but not on this engine!)
-MAF voltage bank 1/2

and the best one...

-VVT Oil Temperature (see attached screen shot)

What really surprised me was a 10 degree increases in oil temp from a SINGLE run in second gear to 7,000 RPM WITH ambient temps at 32!!

si_driver

I have the https://www.autoenginuity.com/ scan tool and your temps look about right.

I was actually checking it a couple of days ago and with air temp being about 53F and the oil temp went up to about 185F.

SonicVQ

^ That is a very nice scan tool.

Do me a favour and watch your coolant & oil temps and do a few wide open throttle runs in second gear. Let me know how much you oil temp goes up AND did your coolant temp DROP 10+ degrees.

Mr_Mer

iTrader: (2)

Indeed. Torque is the shnitz!

si_driver

VonicVQ,

the beginning of the data file got corrupted and I couldn't all of the data back. but the temp did not change much.

Speed RPM Mass flow Coolant Temp Air Intake Temp Oil Temp

75 2525 39.19 176 32 201.2
76 2550 57.71 176 32 201.2
77 2588 56.74 176 32 201.2
78 2638 52.94 176 32 201.2
78 2663 47.64 176 32 201.2
80 2688 45.44 176 32 201.2
81 2750 113.17 176 32 201.2
83 3863 163.35 176 30 201.2
86 4200 213.35 176 30 201.2
91 5888 267.9 176 30 201.2
97 6125 266.49 176 30 201.2
102 6375 199.73 172 32 201.2
104 5175 172.12 171 32 203
107 4700 131.75 171 32 203
109 3963 23.37 169 32 204.8
107 3975 23.29 169 32 204.8
106 3900 22.73 169 32 204.8
103 3813 22.31 169 32 204.8
101 3713 21.79 169 34 204.8
97 3550 20.74 171 34 204.8
92 3338 19.17 171 34 204.8
88 3238 18.28 171 34 204.8
84 3125 17.24 171 34 204.8
82 3025 16.27 172 34 204.8
80 2950 19.01 172 34 204.8
77 2888 26.98 172 34 204.8
76 2838 36.02 172 34 204.8
75 2813 38.8 172 34 204.8
75 2788 39.8 172 32 204.8
73 2763 32.11 172 32 204.8
73 2738 43.65 172 32 204.8
73 2738 47.94 172 32 204.8
72 2738 53.49 172 32 204.8
73 2738 172 32 204.8

SonicVQ

Thanks for doing this!

I find it interesting that under WOT, your coolant temp dropped 7 degrees in 4 seconds and oil temp went up 4 degrees. My car was similar.

si_driver

As far as I can tell the oil temps are usually around 200-210 F.

What would be interesting to know is if the oil temps are different and/or not in that range on the engines that have the blown paper gaskets and low oil pressure issues?

So for people that do not have the oil pressure sensor installed they could monitor the oil temps with torque or similar.... and if be alerted if the oil temps are not within range.

PongSanity

iTrader: (5)

Torque is the business.

m3clubracer

Does anyone know the Dash Command process for getting the same PID's?

SonicVQ

^ There is no mention of "advanced" or "enhanced" on their website, so I would assume you just get the normal generic OBD-2 items.

m3clubracer

But they do mention PID's.

SonicVQ

VVT Oil Temp is not an ODB PID. Generic scanners won't display it.

Unless the OBD device understands the Nissan CAN bus protocol/encoding (like Consult - III) it won't be able to retrieve the oil temp from the ECU.

m3clubracer

So torque can read it as a PID?

SonicVQ

^ Yes, if you have Torque Pro and this $7 plugin:
https://play.google.com/store/apps/d...advanced&hl=en

JSolo

iTrader: (14)

I saw oil temps upward of 230F during some aggressive driving in the mountains this past summer; 4th gear, mostly around 3500-4500 rpm, with the ac on.