Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: Jim_rx7 on February 13, 2009, 11:49:51 PM

Title: Engine in - hunting idle issue... help
Post by: Jim_rx7 on February 13, 2009, 11:49:51 PM
The car is hunting from about 850rpm to 1500rpm when on idle. Any reason why this would be?

I noticed the connection on the BOV is very bad and a part of it has been siliconed in the past. Could this be drawing air in causing the hunting?


thanks for any help offered!!


here\'s a little vid....

Title: Engine in - hunting idle issue... help
Post by: BlitzBoy on February 14, 2009, 12:07:36 AM
any sort of air leak will cause it to hunt, also the Apexi is probably trying to self learn the idle again, follow the apexi idle setup procedure as if you plugged in the ECU for the first time I think its in one of the technical stickies
Title: Engine in - hunting idle issue... help
Post by: Jim_rx7 on February 14, 2009, 10:21:19 AM
I\'ll have a hunt for that mate... thanks
Title: Engine in - hunting idle issue... help
Post by: gandyRX on February 14, 2009, 02:13:12 PM
mine does exactally the same thing but it eventually sorts its self and idles normally, i was told it could be a faulty tps sensor? could it be that?
Title: Engine in - hunting idle issue... help
Post by: dthebuk on February 14, 2009, 02:21:33 PM
mine does the same, its an egi, ive been told the tps needs adjusting.

i don;t know about fd\'s though
Title: Engine in - hunting idle issue... help
Post by: gmogle on February 14, 2009, 02:22:02 PM
Is it only hunting when the car is cold. If you leave it and the oil warms up does it still hunt ? Mine does this sometimes, is fine when warm though.
Title: Engine in - hunting idle issue... help
Post by: dthebuk on February 14, 2009, 02:33:26 PM
^^ thats what mine does
Title: Engine in - hunting idle issue... help
Post by: Prof on February 14, 2009, 04:02:32 PM
^^ What they said ^^
 
Air leak or TPS (Throttle position sensor).