21 replies to this topic

[Sellaman]

wow very interesting as i did not know that about reverse. Just so u know it was at 1.8k when i started it but it was slowly dropping. I am going to keep an eye on it very carefully for the next couple days and ill let you know what the revs are sitting on.

You will notice that your idle speed revs are very high and there is nothing (legally) that you can do about it. It's against the law to fiddle with the engine management system to lower the idle speed.

The Imprezas before 2008 did not have this problem because their idle speeds hot or cold are much lower.
After 2008 when the next generation Imprezas came out (the ones the same shape as ours) their idle speeds were greatly increased to comply with emission control standards. They use higher idle revs to burn off toxic gases that the exhaust produces.

Ps what i engine braking?? i am assuming it I using the gears to slow down?

Yes , that's right.

[TSG]

My B4 will rev to 1600ish on a cold start, and will stay there while in park (its auto), as soon as I take it for a little drive, it will idle quite low at a stop, like 750.

If it isn't dropping after the engine temperature has risen, a bit weird.

EDIT: Just read the above post, it may well be normal then