Volvo Owners Club Forum - View Single Post - Annoying idle problem

Cylinder 8 · May 30th, 2020, 11:26

The CTS has a resistance of 5.85 kilo-ohms when cold, and 0.53 kilo-ohms when hot, so I'm happy that's fine.

I've recorded some videos of how it behaves (hopefully the links work), make sure your volume's up high.

This is a cold start:
https://drive.google.com/file/d/1Wnq...ew?usp=sharing

And this is how it behaves when warm (watch to the end, the last time I rev it is the worst):
https://drive.google.com/file/d/1Awe...ew?usp=sharing

I noticed the air/fuel gauge stays in lean every time the revs drop too low and doesn't go back to rich until the idle has recovered. Does that point to a vauum leak or fuel pressure issue?

May 30th, 2020, 11:26	#13
Cylinder 8 Junior Member Last Online: May 9th, 2022 10:37 Join Date: Sep 2018 Location: Warwick	The CTS has a resistance of 5.85 kilo-ohms when cold, and 0.53 kilo-ohms when hot, so I'm happy that's fine. I've recorded some videos of how it behaves (hopefully the links work), make sure your volume's up high. This is a cold start: https://drive.google.com/file/d/1Wnq...ew?usp=sharing And this is how it behaves when warm (watch to the end, the last time I rev it is the worst): https://drive.google.com/file/d/1Awe...ew?usp=sharing I noticed the air/fuel gauge stays in lean every time the revs drop too low and doesn't go back to rich until the idle has recovered. Does that point to a vauum leak or fuel pressure issue?