Opel Astra crank sensor

Audi88 · Post by **Audi88** » Fri Dec 18, 2020 7:34 pm

Opel_Astra H crank upload.psdata: (8.99 MiB) Downloaded 321 times

I got this waveform from a Opel Astra 2005 engine XEP16. problem is long crank time P0300 random misfire
I can tell it is not right, but is my connection right one lead to signal wire Brown and the other lead to battery Ground (earth)

Audi88 · Post by **Audi88** » Sun Dec 20, 2020 6:25 am

I went back to the car and put both leads on the sensor. I had 1,32V on both wires unplugged.

Post by **Steve Smith** » Mon Dec 21, 2020 1:54 pm

Hello and thank you for the post.

Most certainly I would examine the crankshaft sensor pick up ring based on the shape of the waveform at the "reference point" (Missing teeth)

This is where the waveform library comes into its own and where we must thank LucaB for his contribution

Please take a look at Bens video here https://www.picoauto.com/library/waveform-library on how to access the waveform library using PS6 at present (PS7 coming soon)

Below we have the Waveform Library in action:

: Image 1

Here we can see how the loaded crank signal (Red) from the Waveform Library differs to yours (Blue)

: Image2

I think it would also be helpful to compare LucaB cam and crank signal with your own for any possible correlation issues

The following links will help:
topic18471.html
topic21754-10.html

I hope this helps, take care......Steve

Audi88 · Post by **Audi88** » Mon Dec 21, 2020 4:16 pm

perfect thanks

Audi88 · Post by **Audi88** » Mon Dec 21, 2020 4:34 pm

Here is a picture of the missing tooth, it is no damage to the reluctor wheel but my first thought when I saw the waveform it was a misaligned sensor but it is not possible. Hopefully, I get the sensor before Christmas

liviu2004 · Post by **liviu2004** » Mon Dec 21, 2020 4:56 pm

This:

Or they used aftermarket parts.

Audi88 · Post by **Audi88** » Thu Dec 24, 2020 5:48 am

Car starts feel great, I also have 02 sensor slow response no code for the sensor but I have lean codes.

liviu2004 · Post by **liviu2004** » Thu Dec 24, 2020 7:48 am

With 160.000 km new oxygen sensor needed.

Audi88 · Post by **Audi88** » Sun Jan 17, 2021 11:44 am

Car fixed with the crank sensor but now is the misfire still there freeze frame data show random misfire cyl 4 setting the code at 1900 rpm engine temp 65 C here is a file with amp clamp on all injectors and primary injector voltage cyl 4 this look suspect.

liviu2004 · Post by **liviu2004** » Sun Jan 17, 2021 12:07 pm

Haven’t seen waveform but these engines are notorious to misfire random when intake egr channels are dirt blocked there is even an tsb for. Take egr plug out clear codes test again.

PicoScopes
& kits

For vehicle manufacturers

EV kits and
accessories

Noise, Vibration and Balancing

Milliohm tester

Pressure sensors

Current clamps

Breakout
leads/boxes

Accessories

Automotive Forum