MG RPM Dips Upon Turning on the AC

Joined
Sep 4, 2025
Messages
49
It used to go directly from 700 to 800 rpm at idle whenever I turn on the ac

Now it dips from 700 to 600 then stabilizes at 800

It feels it’s going to stall before it stabilizes at 800 rpm

MG 1.5T odo 150k miles

IMG_9494.webp
 
Are the intake passages and throttle body clean?
Try a dose of fuel injector cleaner before a stint of local driving and see if anything changes.
In which country are you?
 
Most cars even my old 03 blip the throttle automatically when the ac kicks on. If I'm rolling at idle and press the comp button I can feel it lunge a tiny bit because of that. I don't imagine the software breaks maybe it never had it and you only just noticed. But I don't think it'll turn off. Try to see what happens with it rolling at idle with the ac button off then press it on. Also that's a really nice blue.
 
Are the intake passages and throttle body clean?
Try a dose of fuel injector cleaner before a stint of local driving and see if anything changes.
In which country are you?
I use injector cleaner every 10k
I cleaned the throttle and changed spark plugs recently but the problem still remains
 
When I was looking at the Taos, that vibrant blue was only available at higher trim levels.

What country is that number plate from?
Judging by the text on the top part it looks like arabic and the area looks nice so maybe a nicer place like qatar or saudi arabia.
 
I had no idea MG was still making cars! What model year? We need more photos, including under the hood...
 
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