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        General >> Problems >> idle tickover
        
(Message started by: eau_de_cologne on Oct 5^th, 2008, 5:58pm)

Title: idle tickover
Post by eau_de_cologne on Oct 5^th, 2008, 5:58pm

Hi all
I think I read somewhere that if you leave the battery out for sometime on starting up again idle is very erratic, presumably managment system has fogotten what it's settings should be and has to relearn them.
I can get it idle by comming down very very slowly to it's proper idle speed, but it's very lumpy.
Will I have give it certain amount of time to relearn just idleling or give it a run, it dosn't have tax lol :D

Title: Re: idle tickover
Post by Snoopy on Oct 5^th, 2008, 8:25pm

You are quite correct the process is known as the " Drive Cycle" and is explained HERE (http://www.fordscorpio.co.uk/drivecycle.htm).

I hope this information helps .

Title: Re: idle tickover
Post by eau_de_cologne on Oct 9^th, 2008, 9:34pm

Thanks for that snoopy,
Although correct, not the answer I was hopping for, I'll have to work out a deal with the local constabulary. ::)

Title: Re: idle tickover
Post by Highlander on Oct 9^th, 2008, 10:00pm

Book it in for an MOT ;)

Title: Re: idle tickover
Post by Jonnycab on Oct 10^th, 2008, 2:18am

How long was the battery left off for ?

The tickover shouldn't be that bad when the battery is reconnected. Maybe the odd miss now & then until the PCM re-learns all its parameters, but nothing too serious :)

Apart from a bad tickover being caused by a faulty idle control valve....if the engine hasn't run for a long while then it's possible that the fuel may have gone stale or moisture could have build up in the tank.

It's just a suggestion ;)