A place for more technical discussions. Please make sure you post in the correct section on the site, this way it keeps the site tidy AND ensures you get a more relevant answer.
Looks like the time has come for me to buy an OBD2 reader and some contact cleaner.
I must familiarise myself with engine diagnostic before I could take anything apart.
Thanks for the guide lines.
TrailMaster 2" lift kit
Full floating rear axle conversion, JB underbody guards & recovery points
ORE transfer box HD brackets
T-Max split charge system
X-Shock Dakar ceramic clutch kit & roof rack
Flo-Flex castor polybushes
Kumho KL71 tyres
AVM manual hubs
ORA radius arm guards
Push-fit breathers
Well, thanks to Amazon rush delivery the OBD2 reader I ordered last night has arrived 8am this morning!
It's been plugged in but sadly it could not find any pending/stored DTC. No MIL light on dashboard, no error codes stored, just high RPM...it seems the high RPM is temperature related so I need to figure out which sensor is doing that.
This is exactly what I most wanted to avoid...I just call it guess work!
TrailMaster 2" lift kit
Full floating rear axle conversion, JB underbody guards & recovery points
ORE transfer box HD brackets
T-Max split charge system
X-Shock Dakar ceramic clutch kit & roof rack
Flo-Flex castor polybushes
Kumho KL71 tyres
AVM manual hubs
ORA radius arm guards
Push-fit breathers
Last edit: 21 Nov 2021 19:30 by HUN. Reason: typos
Thank you for the link . I found it's not just interesting but also terrifying how many things could cause idling issues!
The sensor shows many sensor values but obviously not all of them available for the Jimny.
Sorry, perhaps I was not clear regarding temperature.
As the temperature of the engine gets higher the RPMs does as well. The higher the temperature the higher the RPMs.
When the engine is cold the RPM is ~ 1400.
When the engine is warm the RPM settles at ~2170 and it stays there.
In between cold and warm RPM gradually increases.
On top of this sometimes it drops the RPMs down for a half a second. It does this without any obvious reason.
Regards,
Gabor
TrailMaster 2" lift kit
Full floating rear axle conversion, JB underbody guards & recovery points
ORE transfer box HD brackets
T-Max split charge system
X-Shock Dakar ceramic clutch kit & roof rack
Flo-Flex castor polybushes
Kumho KL71 tyres
AVM manual hubs
ORA radius arm guards
Push-fit breathers
It sounds like it might be the IAC valve sticking, but a Google search also suggested the PCV valve. Both are apparently easy enough to clean and I would check the throttle body, cable and butterfly valve at the same time.
If the vehicle has been stood for a while the IAC may have become stuck especially if your engine has a few miles on it and has started to push a bit more oil mist through the engine breather.
2020 blue SZ5 (one of the last to be registered in the UK)
Ex 2011 Blue Jimny SZ4
Northumberland Jimny Blog
Thank you for the suggestions.
Yes, the vehicle had been stood since July of 2020 with 80K miles on the clock.
I will have a look over the next few weekends and hopefully find out a bit more about how to tackle this situation.
TrailMaster 2" lift kit
Full floating rear axle conversion, JB underbody guards & recovery points
ORE transfer box HD brackets
T-Max split charge system
X-Shock Dakar ceramic clutch kit & roof rack
Flo-Flex castor polybushes
Kumho KL71 tyres
AVM manual hubs
ORA radius arm guards
Push-fit breathers
We use cookies to give you the best online experience. Please let us know if you agree to all of these cookies. Accepting the Cookies also accepts the Disclaimers for the website.
