Oil Temp Gauge issue

Wiesbaden · 07-01-2020, 02:41 PM

Thanks, will try that. Dealership also said maybe to disconnect the battery and touch neg and positive ends together to discharge the system- capacitive discharge , then hook up the battery and see if that helps. Not to sure, but that's something they can do because I don't feel like really messing up the electrical system. Or is this a normal trouble shooting procedure?? Looked at the Great pictures and wish list of your Z Rusty.

BettyZ · 07-01-2020, 03:16 PM

Quote:

Originally Posted by Wiesbaden

Thanks, will try that. Dealership also said maybe to disconnect the battery and touch neg and positive ends together to discharge the system- capacitive discharge , then hook up the battery and see if that helps. Not to sure, but that's something they can do because I don't feel like really messing up the electrical system. Or is this a normal trouble shooting procedure?? Looked at the Great pictures and wish list of your Z Rusty.

The capacitors will discharge if you unhook the pos/neg on the batt, pump the brakes a few times, and leave it disconnected overnight.

Sent from my SM-G955U using Tapatalk

SouthArk370Z · 07-01-2020, 10:30 PM

Quote:

Originally Posted by Wiesbaden

... Dealership also said maybe to disconnect the battery and touch neg and positive ends together to discharge the system- capacitive discharge ...

No, no, no. Shorting the cables can cause too much current inside the ECM, BCM, TCM, etc, when the capacitors discharge through a dead short. Can probably get away with it 100 times before it bites you in the *** - but why take a chance?

Quote:

Originally Posted by BettyZ

The capacitors will discharge if you unhook the pos/neg on the batt, pump the brakes a few times, and leave it disconnected overnight.

This is the way to do it - it discharges the capacitors through a load (the brake lamps) not a dead short. It only takes stepping on the brake pedal for a few seconds, you don't have to let it sit overnight. Pos or neg post - doesn't have to be both.

Rusty · 07-01-2020, 10:35 PM

Quote:

Originally Posted by SouthArk370Z

No, no, no. Shorting the cables can cause too much current inside the ECM, BCM, TCM, etc, when the capacitors discharge through a dead short. Can probably get away with it 100 times before it bites you in the *** - but why take a chance?

This is the way to do it - it discharges the capacitors through a load (the brake lamps) not a dead short. It only takes stepping on the brake pedal for a few seconds, you don't have to let it sit overnight. Pos or neg post - doesn't have to be both.

Wiesbaden · 07-01-2020, 11:12 PM

Hey, you all are unbelievable. I really appreciate the advice. I absolutely love my Z and don't want anything that I can prevent happening to her. I am able to replace engines, clutches, brakes, distributor's, water pumps, alternators, etc but the electrical/computer components on cars now is quite a bit more in depth then it used to be. Again, Thank you!! Replacing battery in the morning and will do as you guys suggested and see if it fixes the problem.

Wiesbaden · 07-12-2020, 04:12 PM

Hi, just wanted to update on status of oil temp gauge. I did the suggestions
you all posted. Replaced the battery, brake pedal discharge, etc. Let car sit overnight and it still did not work. Called dealership and told them to order the gauge cluster with an appointment the following week when the part came in. Well, guess what happened next? Went out to drive the car and the gauge worked. Popped right up and went to its normal position when cold. Registered temp when car warmed up to operating temp. It has now been operating as it should. Hopefully it keeps working. Any thoughts?

SouthArk370Z · 07-12-2020, 04:20 PM

Quote:

Originally Posted by Wiesbaden

... It has now been operating as it should. Hopefully it keeps working. Any thoughts?

My guess would be a wiring problem, eg, dirty connector, frayed wire.

Edit: Wiring diagrams, harness routing, etc are in the FSM if you want to do your own troubleshooting. Link in my sig.

Wiesbaden · 09-12-2020, 03:40 PM

Update: No problems with gauge since checking sensor, replacing battery and discharging system. Never brought the car back to the dealership to replace the gauges.

Rusty · 07-01-2020, 03:27 PM

Quote:

Originally Posted by Wiesbaden

Thanks, will try that. Dealership also said maybe to disconnect the battery and touch neg and positive ends together to discharge the system- capacitive discharge , then hook up the battery and see if that helps. Not to sure, but that's something they can do because I don't feel like really messing up the electrical system. Or is this a normal trouble shooting procedure?? Looked at the Great pictures and wish list of your Z Rusty.

Most ECU's need 10.5 volts to operate. If voltage drops below that, the ECU will shut down to save it's self. If the voltage drops close to that during starting. You may get some strange things happening. This may be one of them.

Thank you.

Wiesbaden · 07-01-2020, 03:34 PM

Thank you again. All of the input is greatly appreciated!!! I'm going to replace the battery with a good one- Red Top if you all think that would be a good choice, do the capacitive discharge and remove/check the oil sensor and go from there. Any other thoughts/knowledge/ideas are always appreciated.
Thank You!!!

Rusty · 07-01-2020, 03:40 PM

Quote:

Originally Posted by Wiesbaden

Thank you again. All of the input is greatly appreciated!!! I'm going to replace the battery with a good one- Red Top if you all think that would be a good choice, do the capacitive discharge and remove/check the oil sensor and go from there. Any other thoughts/knowledge/ideas are always appreciated.
Thank You!!!

Stay away from Optima. They been having quality issues since they got sold.

Here's the battery to get.

https://shop.advanceautoparts.com/p/...000%7CL3*15597

Spooler · 07-01-2020, 03:50 PM

Quote:

Originally Posted by Rusty

Stay away from Optima. They been having quality issues since they got sold.

Here's the battery to get.

https://shop.advanceautoparts.com/p/...000%7CL3*15597

I need a new battery myself. My 2013 is still on the factory battery.

Rusty · 07-01-2020, 05:46 PM

Quote:

Originally Posted by Spooler

I need a new battery myself. My 2013 is still on the factory battery.

I still have the oem battery. It's 9 yrs old.

07-01-2020, 02:41 PM	#1 (permalink)
Wiesbaden Base Member Join Date: Dec 2019 Location: FL Posts: 20 Drives: 2016 370z Rep Power: 3362	Thanks, will try that. Dealership also said maybe to disconnect the battery and touch neg and positive ends together to discharge the system- capacitive discharge , then hook up the battery and see if that helps. Not to sure, but that's something they can do because I don't feel like really messing up the electrical system. Or is this a normal trouble shooting procedure?? Looked at the Great pictures and wish list of your Z Rusty. Rusty likes this.

07-01-2020, 11:12 PM	#5 (permalink)
Wiesbaden Base Member Join Date: Dec 2019 Location: FL Posts: 20 Drives: 2016 370z Rep Power: 3362	Hey, you all are unbelievable. I really appreciate the advice. I absolutely love my Z and don't want anything that I can prevent happening to her. I am able to replace engines, clutches, brakes, distributor's, water pumps, alternators, etc but the electrical/computer components on cars now is quite a bit more in depth then it used to be. Again, Thank you!! Replacing battery in the morning and will do as you guys suggested and see if it fixes the problem. Spartan 1771 and Rusty like this.

09-12-2020, 03:40 PM	#8 (permalink)
Wiesbaden Base Member Join Date: Dec 2019 Location: FL Posts: 20 Drives: 2016 370z Rep Power: 3362	Update: No problems with gauge since checking sensor, replacing battery and discharging system. Never brought the car back to the dealership to replace the gauges. ZoomZ likes this.

07-01-2020, 03:34 PM	#10 (permalink)
Wiesbaden Base Member Join Date: Dec 2019 Location: FL Posts: 20 Drives: 2016 370z Rep Power: 3362	Thank you again. All of the input is greatly appreciated!!! I'm going to replace the battery with a good one- Red Top if you all think that would be a good choice, do the capacitive discharge and remove/check the oil sensor and go from there. Any other thoughts/knowledge/ideas are always appreciated. Thank You!!! sportsman2003 likes this.

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07-12-2020, 04:12 PM	#6 (permalink)
Wiesbaden Base Member Join Date: Dec 2019 Location: FL Posts: 20 Drives: 2016 370z Rep Power: 3362	Hi, just wanted to update on status of oil temp gauge. I did the suggestions you all posted. Replaced the battery, brake pedal discharge, etc. Let car sit overnight and it still did not work. Called dealership and told them to order the gauge cluster with an appointment the following week when the part came in. Well, guess what happened next? Went out to drive the car and the gauge worked. Popped right up and went to its normal position when cold. Registered temp when car warmed up to operating temp. It has now been operating as it should. Hopefully it keeps working. Any thoughts?