Found this snipped of wire, where could it connect?

#1
20190207_184727.jpg

It was at the most bottom in the front of the engine and it goes up to the main loom (injectors, ecu, etc). Could this be oil pressure sensor in bottom oil pan? Previous oil pan didnt have any sensors, but after cracking mine and getting a used one there is a sensor that has wires cut off
 

KevinH

Senior Member
#2
If the wires lead to the sump it will be the oil level sensor, which is located inside the sump. The sensor is used with the MFD (multi function display)

The oil pressure switch is screwed into the front of the cylinder block, behind the starter motor.

What colour are the two wires?
 
Last edited:
#3
If the wires lead to the sump It will be the oil level sensor, which is held inside the sump by a clip. The sensor is used with the MFD (multi function display)

The oil pressure switch is screwed into the front of the cylinder block, behind the starter motor.

What colour are the two wires?
20190207_210322.jpg
 
#5
check see if you have wires going to the temp sensor, rear of engine follow big water pipe to thermostat its just around corner in the thermostat housing ,would explain why its running crap,,
 
#6
check see if you have wires going to the temp sensor, rear of engine follow big water pipe to thermostat its just around corner in the thermostat housing ,would explain why its running crap,,
That coolant temperature sensor has a connector and is working (i hope because I see engine temp on my dash). This wire was in the front of the engine, at the bottom of the radiator
 
#12
just looked brown/green oil level,
....or it could be the Crankshaft Sensor (Bn & Bn/Gn) which is mounted on the front of the cylinder block just above the starter motor.
Thank you both for replying and looking into it! As I mentioned before I connected the snipped wire to my multimeter and with the other multimeter end I probed my (left) ECM connector and I found that it beeped when I touched the 25th pin. The Speedster PDF stated that the 25th pin is for "H1.22 Temperature Indicator - Coolant", but I can't find anything like that for my Astra G Coupe. Autodata has no Wiring Diagram for my coupe, only for Zafira A and Vectra B with Z22SE Engines.

"just above the starter motor. " there are two sensors and two ground wires which were connected and those connectors are fine. "IAT (Inlet Air Temperature)" is a lot higher and in seperate loom which is also fine and was connecter where it should.

Page 10: https://www.speedsterclub.nl/bibliotheek/technische documentatie/tis/Checking Procedure/Engine System, GMPT-E15, Z22SE-2004-2003-2002-2001-Speedster,VX220-Opel-Vauxhall.pdf

I will provide more pictures in the evening or tomorow, I would really like to resolve this fully

I also remembered that while probing this wire - three of the ECM pins beeped, it could also be shorted somewhere.. Will have to seriously look into that. Will even post a video later
 
Last edited:
#13
So it should be really easy for you to find out where these loose wires should be connected from a process of elimination by checking connectivity of all the sensors e.g. oil level sensor, crankshaft sensor, knock sensor ..etc

You keep mentioning 'H1.22 Temperature Indicator - Coolant' but it can't be that as the wires are Bu/Rd & Bn (blue/red & brown) and you say the CTS already has a connector to it anyway.
 
#14
So it should be really easy for you to find out where these loose wires should be connected from a process of elimination by checking connectivity of all the sensors e.g. oil level sensor, crankshaft sensor, knock sensor ..etc

You keep mentioning 'H1.22 Temperature Indicator - Coolant' but it can't be that as the wires are Bu/Rd & Bn (blue/red & brown) and you say the CTS already has a connector to it anyway.
Ill post a video as soon as it finishes uploading. Im sure they're shorting somewhere because both of the leads are shorting to each other and both of the leads connect with 3 different ECM pins
 
#16
Update: This connector (that goes to the other ECM loom) is somewhere shorted. The three pins on the right are shorted to eachother. So for now I cannot trace back those two wires because they go through this connector

20190209_150139.jpg

The Black, Brown and Brown Green are shorting together
 
Last edited:
Top