C14SE possible misfire and running Rich

[B3Hulk]

Hello from Australia!


I have an issue with my Holden/Opel Combo 1997 with a C14SE engine.


At low idles it feels like the revs are bouncing and as if there is a misfire and it does smell like it is running rich. I have the Check Engine Light on but my scanner doesn't seem to be compatible with the car.


I have inspected the spark plugs and they were pretty dirty and have seen better days so I installed new spark plugs hoping that it will be the problem. The car does sound and feel better but there is definitely still a misfire and still running rich.


The Check Engine Light does turn off after a while of driving but comes back on if I am at a stop or turn off the car and back on again


https://imgur.com/0T3y3za
https://imgur.com/0T3y3za
https://imgur.com/a/CSX7l
https://imgur.com/a/bveKs
https://i.imgur.com/CkFQzHA.jpg


https://i.imgur.com/cz2yy6Q.jpg

Does anyone know what the issue would be?


Feels like a misfire and is running rich


Also does anyone know a scanner that would be compatible?

[total_vauxhall]

Possibly cold start sensor thingy

[millworm]

May be worth looking at the cts aswell

[B3Hulk]

I will have a look at the cold start sensor but I doubt that might be it.
As for the CTS I know its faulty and so I have set up my fans to kick on manually with a switch inside the car.

But would the CTS cause an issue like this?

[meritlover]

Yes. Fueling calculation is modified by CTS.

[B3Hulk]

Okay thanks for the feedback guys but I found the issue. I replaced the Coolant Temperature Sensor and still no difference.

https://i.imgur.com/rJkR7CM.jpg


While I was looking around the engine bay I notice that the hose on the throttle body was missing! I connected the hose and placed a clamp.

https://i.imgur.com/gFfs1tf.jpg

Car is now running PERFECTLY now! Simple fix to a problem that had me question everything about the car haha