Tick over

[jimmy_supra]

Bought a tt supra automatic fresh import and i am the first uk owner. It has done 53,000 miles. When it is ticking over it revs at around 1900 rpm is this normal as most cars i have owned in the past tick over at around 900 rpm they were all manuals and i have never owned a automatic so this is new territory for me.

 

Thanks

Edited June 12, 2008 by jimmy_supra (see edit history)

[TonyP]

1900 is about right for when it's cold. Once it's warmed up it should drop to about 600-700.

[jimmy_supra]

1900 is about right for when it's cold. Once it's warmed up it should drop to about 600-700.

 

Thats the thing I have just been out in it for about a hour and half tonight and when I got back I put it in park and left it to cool and it was ticking over at 1900rpm.

 

Any ideas why it ticks over so high when it is hot, has something gone wrong? Any help would be greatly received thanks.

Edited June 11, 2008 by jimmy_supra (see edit history)

[carl0s]

Something's not right. It shouldn't even be that high when it's really cold. When really cold, first start, and in fast idle, I think it should be around 1600rpm. Then it should drop gradually.

If you take the car out before the idle has dropped, it won't have dropped its idle point until given chance, so if you jump straight in the cold car, drive 100 miles on the motorway, when you stop at traffic lights at the end of the 100 mile motorway journey, the car will still be idling at 1600rpm for a minute as it gradually drops the idle point.

 

Maybe the throttle cable has been over tensioned. There's a screwy thing on the cable/bracket in the engine bay.

[jimmy_supra]

Something's not right. It shouldn't even be that high when it's really cold. When really cold, first start, and in fast idle, I think it should be around 1600rpm. Then it should drop gradually.

If you take the car out before the idle has dropped, it won't have dropped its idle point until given chance, so if you jump straight in the cold car, drive 100 miles on the motorway, when you stop at traffic lights at the end of the 100 mile motorway journey, the car will still be idling at 1600rpm for a minute as it gradually drops the idle point.

 

Maybe the throttle cable has been over tensioned. There's a screwy thing on the cable/bracket in the engine bay.

 

I have checked the tension of the throttle cable and it is fairly loose and I have compared it to a friends and the tension is identical. I wish it had have been that it would have been a quick fix, thanks anyhow.

 

When i start it up it is around 1600 rpm and drops to around 1100 but that is as low as it gets. If i then drive it for say 30 miles and then stop and leave it to tick over when the engine is warm it then ticks over at 1900 rpm and doesn't really move. Could this be a problem with one of the sensors on the throttle?

[TurboBrett]

could be an air leak after the throttle body or a number of things realy, have you pulled the ecu codes?

 

fresh import?, has it had new fuel from over here resently, maybe it doesnt like it or something like that, pull you ecu codes then reset the ecu after that allow it to relearn what ever it does, ie let it idle for about 15 mins

 

also the Idle Air Control Valve could be dirty and sticking, ive read a few threads where that was the problem buit have not had any problems my self, just a few things to check over

Edited June 12, 2008 by TurboBrett (see edit history)