MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: frasermk5 on January 14, 2024, 10:21:58 am

Title: Cold Start Revs
Post by: frasermk5 on January 14, 2024, 10:21:58 am

Usually upon cold start, the revs are at around 1100rpm for a minute or so before dropping to normal idle speed. In recent weeks this has stopped happening and even at around freezing temps at cold start the revs aren’t high then low, they’re just always at normal operating rpm. Any reason why?

Title: Re: Cold Start Revs
Post by: SANDEGTI on January 16, 2024, 04:10:50 pm

I think you'll find this is normal, I noticed the same thing this year and in recent weeks when it got really cold the revs would drop instantly and I assumed the thermostat had gone again. I did a bit of research and apparently it's the way the ECU deals with colder than usual temps, it efficiently tries to warm the engine up faster. Off the top of my head anyway. :happy2: