Search found 94 matches

by Rfmotors1
Fri Feb 16, 2024 12:21 pm
Forum: Case studies
Topic: Cayenne V6, NVH to locate origin of engine knock, click, misfire
Replies: 7
Views: 3094

Re: Cayenne V6, NVH to locate origin of engine knock, click, misfire

Yes please, that would be very nice of you.
I could write it in Czech but I don't have any Czech connections even I am originally from there. Sending my regards to all Pico users in Poland 👍👍👍
Roman​
by Rfmotors1
Tue Feb 13, 2024 11:03 am
Forum: Case studies
Topic: Cayenne V6, NVH to locate origin of engine knock, click, misfire
Replies: 7
Views: 3094

Cayenne V6, NVH to locate origin of engine knock, click, misfire

Hi all current and future Pico users, I have one case involving NVH which I think is good to share. Porsche Cayenne 3.6 V6, old but still nice car with complaint “engine vibration after morning start”. Its good to mention cold start means 28 or more degrees Celsius as this is in southeast Asia tropi...
by Rfmotors1
Thu Feb 08, 2024 3:48 pm
Forum: Diagnostic discussion
Topic: CKP signal flopping from capture to capture
Replies: 7
Views: 5577

Re: CKP signal flopping from capture to capture

Hi Pico community,
Anyone has any comment to this unusual behaviour discussed above? I am very curious and would like to know if my theory is plausible or not.
Also we can all get prepared for such scenarios.
Thank you,
Roman
by Rfmotors1
Tue Feb 06, 2024 4:10 am
Forum: PicoScope 7 Automotive software
Topic: PicoScope 7 Automotive Software
Replies: 141
Views: 202985

Re: PicoScope 7 Automotive Software

If it helps, I have noticed the file auto creation depends on what version of PS7 is set as default. I have installed both latest EA and Stable versions and when the Stable is installed after EA, it sets the Stable as default (win 11). So work around that works for me is to install or use "repair" t...
by Rfmotors1
Sun Feb 04, 2024 12:17 pm
Forum: Diagnostic discussion
Topic: speed sensor testing new GMs
Replies: 2
Views: 705

Re: speed sensor testing new GMs

Hi Bill, The wiring diagram is more likely for magnetoresistive speed sensor design. There is 12V power supply and the ground wire would be the signal wire. See this post where is also psdata. file attached which includes a math channel for speed graphic visualisation. https://www.picoauto.com/suppo...
by Rfmotors1
Sun Feb 04, 2024 11:52 am
Forum: PicoScope 7 Automotive software
Topic: PicoScope 7 Automotive Software
Replies: 141
Views: 202985

Re: PicoScope 7 Automotive Software

The is folder always created at the location where is your latest file save location. Also if you open a saved file, then in that location is this "logging" folder created, if the location does not have one already. So if you are not saving your files to desktop, it will be not created in desktop. T...
by Rfmotors1
Mon Dec 11, 2023 6:51 am
Forum: Diagnostic discussion
Topic: timing phase
Replies: 2
Views: 2934

Re: timing phase

Hi, The answer is you can meassure the angle very accurately. However you need to know the good known waveform value and also the condition at the capture. Cam solenoids activated ot not activated. Another words, cam solenoids unplugged on both, good known and your car. Then you can compare and exac...
by Rfmotors1
Mon Dec 11, 2023 6:41 am
Forum: Help me fix my car
Topic: Waveform
Replies: 1
Views: 4914

Re: Waveform

Hi,
You need to upload the waveform here.
Regards,
Roman
by Rfmotors1
Mon Dec 04, 2023 10:47 am
Forum: Diagnostic discussion
Topic: J1939 CAN bus Loading
Replies: 7
Views: 15626

Re: J1939 CAN bus Loading

Hi gbgunn-st, I have attached some examples of CAN 500 capture with decoding, it is not J1939 as I do not come across commercial vehicles, however the scoping and decoding is not much different. (This was captured with x10 300Mhz probes, but ordinary leads will be just fine) I think it is good examp...
by Rfmotors1
Sat Dec 02, 2023 4:50 pm
Forum: Diagnostic discussion
Topic: J1939 CAN bus Loading
Replies: 7
Views: 15626

Re: J1939 CAN bus Loading

Hi, it is due to short time capture per one screen. The frames will be red in decoding table simply because part of the frame is missing (continue beyond the screen) Set the time to at least 50ms/division and sample rate 5Ms/second. Then use zoom to see details. If you want, I will post here capture...