Thread: 240 General: - High Idle Only In N & P
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Old Jul 20th, 2022, 07:44   #6
Othen
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Originally Posted by TheHungriestBadger View Post
A couple of points to address:

1: I'm glad I'm not the only one, always reassuring.
2: Re: John's point, I have only noticed it in the hot weather, particularly (I believe) after replacing my thermostat so that the engine actually holds at operating temp (92°C).
3: This vehicle is my intro to automagics AND to old Volvos. Given I've only had the 240 a handful of weeks, it's hard to say what's normal. I bought it with the throttle cable tightened to the point of having 'around town cruise control' as it never quite shut, but I'm gradually bringing it up to a solid stage 0.

Most likely I'll just wait until autumn when it cools off a bit and observe the behaviour then... Any reason for the hot weather magnifying the effect?
Ah, that probably explains it Adam - this being your first auto - and your first older one. The behaviour you describe doesn't sound that abnormal for an older auto - they all creep a bit in gear and that power has to come from somewhere.

It may be worth you changing the ATF, it may be creeping a bit more that usual if that isn't in good condition. You won't really be able to change it all in one go, but you should be able to remove 2-3 litres at a time (via the drain plug if the AW70 has one, if not through the filler) and refill. Repeat that 2 or 3 times over a couple of months.

Good fortune,

Alan
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