High idle on aem after disconnecting battery

Just reconnected my battery after removing it to change the power steering pump and now the car`s idling at 3k revs, i`m sure ive read something here before about this but can`t find it.Any ideas?

Bet you get some quaility looks at the lights mate!

Yes mine does this, mine disappears the next time I turn the ignition off & remove the key

Yes mine does this, mine disappears the next time I turn the ignition off & remove the key

Going to try that,cheers.

might need the tps reset on the aem mate. mine did that once and afther putting the battery on it was saying the tps was open 16% when the throttle was fully closed.

might need the tps reset on the aem mate. mine did that once and afther putting the battery on it was saying the tps was open 16% when the throttle was fully closed.

Good thinking. Easy to do aswell

No still the same.

Just a high idle or hunting?

might need the tps reset on the aem mate. mine did that once and afther putting the battery on it was saying the tps was open 16% when the throttle was fully closed.

Going to try that now, cheers guy`s.

This is normal after a batt disconnect but it should be fine the 2nd time you start it. You shouldnt have to recalibrate your TPS unless you have changed it.

Ok tps was fine then the idle settled down abit but was hunting alot, on closer inspection i noticed the 2nd hand p/s pump was leaking so i took it back off and there was a bolt missing which holds the casing together, just refitted it but to late to try it, thanks for the replies.

This is normal after a batt disconnect but it should be fine the 2nd time you start it.

What's the reason for this? Is it a "feature" in the software or is there a sensible reason for it?

What's the reason for this? Is it a "feature" in the software or is there a sensible reason for it?

Not 100% sure but its something to do with idle stepper motor being reset.

If the Battery is disconnected the AEM loses its “hold Power” settings from where the idle stepper motor is positioned in its step sequence. When the battery is re-connected again and the key is turned to IGN. The AEM does a full sweep on the step Sequence to find where the Park Position is. I have seen it on a couple of occasions get confused where to park and it leaves the valve open. Then when you turn the key off and it does another “key off Reset” it sorts it self out.

A lot of the time when it does the full step sweep the valve gets stuck which actually causes it to lose sync.

The idle control on the AEM is closed loop so it should sort it self out but look at the idle learn value it should be between -3 and +3..

If you still have a problem Si then give me a ring when your connected and I will talk you through some tests.

Ryan

OK makes sense.

Its still bloody doing it, why is nothing straight forward?, i`will be calling you shortly ryan,

2 minutes on the blower with ryan and its sorted, thats another 1 i owe you mate,

Nice one

How did you get one WRT the exhaust/screamer pipe Si - did you go on Tuesday?

Nice one

 

How did you get one WRT the exhaust/screamer pipe Si - did you go on Tuesday?

Its this monday mate, i`ll let you know asa.

Its this monday mate, i`ll let you know asa.

What you having done?

What was the fix? Something simple or not? Might be handy for anyone searching

Its this monday mate, i`ll let you know asa.

Duh, I must have remembered wrong.

Don't forget to sign up to the track day dude!

What you having done?

Having a mid box fitted in the zorst and the screamer diverted into the downpipe.

What was the fix? Something simple or not? Might be handy for anyone searching

Basically ryan thinks ive got a sticky stepper motor which was making it idle high so he ran through some idle% vs target settings to adjust it back down, i will have to check out the stepper at some stage though as its obviously playing up.