Search found 434 matches

by Boxster EV
Tue Mar 19, 2024 7:14 pm
Forum: Tesla
Topic: Tesla Large Drive Unit (LDU) Motor Teardown and maintenance
Replies: 471
Views: 247928

Re: Tesla Large Drive Unit (LDU) Motor Teardown and maintenance

A small update regarding my SKF seal and speedi sleeve. I pulled the encoder whilst fault finding this issue. The wheel was still dry. A little residue on the encoder but that might have been from the silicon used to seat the seal. Edit: forgot to mention that I think that's 17k miles on this set-up...
by Boxster EV
Tue Mar 19, 2024 7:08 pm
Forum: Tesla
Topic: LDU Forward and Reverse LV power issue
Replies: 10
Views: 454

Re: LDU Forward and Reverse LV power issue

johu wrote: Tue Mar 19, 2024 6:40 pm 50A?? That must have generated a lot of heat. 600W actually
I feel a bit stupid for relating issue this to the DU in the first place. Yes, the relay was too hot to touch even after a minute or two.
by Boxster EV
Tue Mar 19, 2024 6:36 pm
Forum: Tesla
Topic: LDU Forward and Reverse LV power issue
Replies: 10
Views: 454

Re: LDU Forward and Reverse LV power issue

Aragorn wrote: Tue Mar 19, 2024 3:44 pm Surprisingly small DC-DC output. Many OEM units seem to be in the 150A+ range.

Indeed. It was a bit of a rash purchase a few years back when my Chevy Volt one went bang.
by Boxster EV
Tue Mar 19, 2024 3:35 pm
Forum: Tesla
Topic: LDU Forward and Reverse LV power issue
Replies: 10
Views: 454

Re: LDU Forward and Reverse LV power issue

What DC-DC are you using? This one. https://shop.fellten.com/shop/tdc-iy-320-12-dc-dc-converter-206-454vdc-1kw-13064?v=79cba1185463 Think I found the issue; my little Davis Craig water pump was dying and pulling like 50 amps (I won’t mention that I fitted 40amp fuse to it temporarily 4 years ago) -...
by Boxster EV
Mon Mar 18, 2024 1:35 pm
Forum: Tesla
Topic: LDU Forward and Reverse LV power issue
Replies: 10
Views: 454

Re: LDU Forward and Reverse LV power issue

Yes, there’s a load somewhere that’s significantly pulling the DCDC power down, or its enable signal is being intermittently interrupted (probably the latter). What I don’t understand is why it only happens when selecting a direction. Will start testing current draw as a first step. I also have a ch...
by Boxster EV
Sun Mar 17, 2024 7:49 pm
Forum: Tesla
Topic: LDU Forward and Reverse LV power issue
Replies: 10
Views: 454

Re: LDU Forward and Reverse LV power issue

Just to add, I have a 5 amp fuse on the 12v FWD signal which doesn’t blow. How can such a drain be evident without blowing the fuse?

I recall Johannes saying that once the gate drive boards are active they can be quite power hungry, but this fault / issue is new.
by Boxster EV
Sun Mar 17, 2024 7:47 pm
Forum: Tesla
Topic: LDU Forward and Reverse LV power issue
Replies: 10
Views: 454

LDU Forward and Reverse LV power issue

When selecting a direction, either FWD or REV, the LV current draw seems to be very high. Only occurs when pulling a direction high. I wondered if I had a short to ground on the car but I’ve eliminated that by giving the FWD pin 12v directly from the battery and the issue still remains. I can have a...
by Boxster EV
Fri Dec 29, 2023 6:08 pm
Forum: Projects
Topic: [DRIVING] Porsche Boxster 986 Tesla conversion [FINISHED]
Replies: 188
Views: 715532

Re: [DRIVING] Porsche Boxster 986 Tesla conversion [FINISHED]

Went through all the thread but didn't find anything about it: weher do you take of the brake preassure for regen by openinverter? Prior to fitting an iBooster, I used an analogue pressure transducer on pot2 for brake pressure regen. However that’s now defunct since installing an iBooster. Today I ...
by Boxster EV
Sat Dec 09, 2023 7:35 am
Forum: Tesla
Topic: 2nd LDU blown in a month - EDIT: False alarm. [SOLVED]
Replies: 50
Views: 12437

Re: 2nd LDU blown in a month - EDIT: False alarm. [SOLVED]

Need to test that sensor today. Thanks for all the help. Though Yesterday, I tested to disconnect the sensor, as I remember that motor tries to spin but shakes and rattles, but that gave me same result .. few times it rattled but most of time nothing happened. So I’m not very confident that it’s th...
by Boxster EV
Sat Dec 09, 2023 7:14 am
Forum: Tesla
Topic: 2nd LDU blown in a month - EDIT: False alarm. [SOLVED]
Replies: 50
Views: 12437

Re: 2nd LDU blown in a month - EDIT: False alarm. [SOLVED]

How could I test the position sensor? I guess I can measure from the sensor end, that it’s getting ground and power. Not sure how to test the encoder channels wires. I guess web interface does not show the readings from encoder, or does it? Test continuity from the wiring encoder pins to the 23 pin...
by Boxster EV
Sun Nov 05, 2023 1:38 pm
Forum: Tesla
Topic: 2nd LDU blown in a month - EDIT: False alarm. [SOLVED]
Replies: 50
Views: 12437

Re: 2nd LDU blown in a month - EDIT: False alarm. [SOLVED]

My parameters have evolved through from a combination of circumstances, but importantly, I have not had a desat or overcurrent event for ages. It’s a fine balance between finding tune that suits all conditions and doesn’t risk damaging the inverter. Rather than worrying about performance too much at...
by Boxster EV
Sat Nov 04, 2023 1:21 pm
Forum: Tesla
Topic: 2nd LDU blown in a month - EDIT: False alarm. [SOLVED]
Replies: 50
Views: 12437

Re: 2nd LDU blown in a month - EDIT: False alarm. [SOLVED]

Boost very low, fweak very low, fweakstart low, throtramp very high, ampmin high.

Regen setting also very aggressive.

UDCmax @ 350!

These are my settings running LDU base, 360v nominal battery (400v). Firmware v5.20r.

Here they are:
params.json
(1.57 KiB) Downloaded 50 times
by Boxster EV
Sat Nov 04, 2023 12:07 pm
Forum: Tesla
Topic: 2nd LDU blown in a month - EDIT: False alarm. [SOLVED]
Replies: 50
Views: 12437

Re: 2nd LDU blown in a month - EDIT: False alarm. [SOLVED]

Please can you post your parameters and firmware version. It makes no sense that you're munching through drive units like this.

Have you double checked that the OI logic board connections are perfectly clean after getting wet with coolant?
by Boxster EV
Tue Sep 26, 2023 11:03 am
Forum: Tesla
Topic: DESAT error
Replies: 11
Views: 1664

Re: DESAT error

Yeah, I read that after more thoroughly after changing the perfectly good condition seal to new leaking one :D What speedi-sleeve are you using? I is there specific dimensions, product code or so? What's wrong with the Aliexpress seal? I didn't see bad things reported about that. It’s all in the th...
by Boxster EV
Tue Sep 26, 2023 10:26 am
Forum: Tesla
Topic: DESAT error
Replies: 11
Views: 1664

Re: DESAT error

Just noticed that I should have used Speedi Sleeve with that seal.. I didn’t, and it leaked. Now bought the one that was recommended from AliExpress. https://www.aliexpress.com/item/32942928844.html?gatewayAdapt=4itemAdapt CTLBDYW one. Hoping it works.. There is a huge thread about the rotor seal, ...
by Boxster EV
Thu Sep 21, 2023 9:43 am
Forum: Tesla
Topic: tmphs 0c on LDU
Replies: 3
Views: 435

Re: tmphs 0c on LDU

I have had this when the connector is dirty / wet.
by Boxster EV
Mon Sep 18, 2023 11:34 am
Forum: Tesla
Topic: Tesla LDU Controller Stops Working with Aggressive Throttle
Replies: 16
Views: 2475

Re: Tesla LDU Controller Stops Working with Aggressive Throttle

I’ve always left the value of my Base unit at -2500.

However, when bench testing I used a value of -300 and gradually increased it until I was comfortable that there were no underlying issues.
by Boxster EV
Sun Aug 27, 2023 6:08 am
Forum: Tesla
Topic: Tesla Large Drive Unit (LDU) Motor Teardown and maintenance
Replies: 471
Views: 247928

Re: Tesla Large Drive Unit (LDU) Motor Teardown and maintenance

howardc64 wrote: Sun Aug 27, 2023 5:11 am @Boxster EV is is at 15k miles on this solution with a SKF FKM seal.
Yes, with this seal (to be used with Speedi sleeve).

SKF CR30x55x7HMS5V Single Lip Viton Rubber Rotary Shaft
IMG_1094.jpeg
by Boxster EV
Thu Aug 17, 2023 11:44 am
Forum: General
Topic: finished or functional ev ?
Replies: 14
Views: 1068

Re: finished or functional ev ?

I will probably change battery in Mazda MX3 i have from 2012 and it has 150000km electric and some 250000km ice logged. When i start i will pin it here as a new project since i finally decided to put outlander motor in it and lose the transmission... :twisted: This sort of mileage is impressive 👏🏻
by Boxster EV
Thu Aug 17, 2023 8:44 am
Forum: Projects
Topic: [DRIVING] Porsche Boxster 986 Tesla conversion [FINISHED]
Replies: 188
Views: 715532

Re: [DRIVING] Porsche Boxster 986 Tesla conversion [FINISHED]

Thanks to the mods for updating my thread title. The car has now completed nearly 25,000 electrical miles running Openinverter savoir faire. It’s also just passed it’s annual MOT. IMG_0982.png The only real update is that I installed a DIY solar array at home to charge it. 🌞 0184A349-DB66-4569-91CA-...
by Boxster EV
Tue Aug 15, 2023 10:10 pm
Forum: General
Topic: finished or functional ev ?
Replies: 14
Views: 1068

Re: finished or functional ev ?

I’ve been daily driving mine for just over three years and completed nearly 25,000 electrical miles. I consider it finished from a project perspective, but there will always something to do to it. I’d really love a bigger battery and CCS at some stage.
by Boxster EV
Mon Jul 31, 2023 9:31 pm
Forum: Tesla
Topic: Tesla Large Drive Unit (LDU) Motor Teardown and maintenance
Replies: 471
Views: 247928

Re: Tesla Large Drive Unit (LDU) Motor Teardown and maintenance

Interesting idea. I used Valvoline G48 concentrate (mixed down to 50/50 with purified water - not distilled) Probably only 2 qt is added from what was lost. G48 is the spec and what everyone seems to use. IMG_0649.jpeg But certainly by looking at the rust particle pattern. Downside of a multi-lippe...
by Boxster EV
Mon Jul 31, 2023 5:57 pm
Forum: Tesla
Topic: Tesla Large Drive Unit (LDU) Motor Teardown and maintenance
Replies: 471
Views: 247928

Re: Tesla Large Drive Unit (LDU) Motor Teardown and maintenance

Do you have the correct coolant? Incorrect coolant or mixture will certainly corrode steel components.

I’m still on my SKF seal BTW.
by Boxster EV
Thu Jun 29, 2023 6:55 pm
Forum: Tesla
Topic: LDU Tune Issue - WOT Mystery
Replies: 13
Views: 3856

Re: LDU Tune Issue - WOT Mystery

Strange issue. The main differences from my tune is that I run a lower throtramp and ampmin setting.

I am however running one Chevy Volt pack and it's becoming a little saggy in its old age.
by Boxster EV
Mon May 15, 2023 2:00 pm
Forum: Projects
Topic: [DRIVING] Porsche Boxster 986 Tesla conversion [FINISHED]
Replies: 188
Views: 715532

Re: Porsche Boxster 986 Tesla conversion [FINISHED]

Update time: Charger relocation I have now moved my Tesla Gen 2 charger and front HVJB to sit horizontally in the front luggage compartment. There are several benefits for doing this versus my original arrangement: 1) There is a perfect size niche towards the rear of the Porsche 996 911 and 986 Boxs...