hunting BB4

big damo · Post by **big damo** » Mon Jul 21, 2014 10:49 am

Hi all I have been away for a while but I am back now lol. I took my lude for a blast down the motorway and not she's hunting really bad, I have bleed the coolant system and have cleaned out the IACV but she's still hunting. Is there anything else I can do to stop it?

P.s have checked for vack leaks

W1ggz · Post by **W1ggz** » Mon Jul 21, 2014 10:50 am

Check your battery is good and is charging properly as well buddy

big damo · Post by **big damo** » Mon Jul 21, 2014 11:05 am

Just got a friend to check my battery and alternator and he said they are working perfectly. :-S

Post by **Ash.Z** » Mon Jul 21, 2014 2:36 pm

Try the valve under the throttle body, can't think what it's called (something like fit valve) it has float like internals that dismantle themselves. Just need screwing back together. But it will adjust tick over aswell I think. I'm sure somebody more experienced will fill in the blanks.

Post by **NafemanNathan** » Mon Jul 21, 2014 3:11 pm

Remove the intake pipe whilst she's hunting (And the car's stopped) and stick you finger/thumb over the lower big hole in the mouth of the throttle body. If it idles fine then it's your FITV (Fast Idle Thermo/Temperature Valve) at fault.

big damo · Post by **big damo** » Mon Jul 21, 2014 3:39 pm

Have. Cleaned the FITV and it's still hunting bit not as bad. How tight am I ment to screw it down?

Post by **Vtecmec** » Mon Jul 21, 2014 3:40 pm

All the way, then back it off about 1-2 turns, the more it's backed off, the higher your cold idle will be.

Post by **NafemanNathan** » Mon Jul 21, 2014 3:42 pm

big damo wrote:Have. Cleaned the FITV and it's still hunting bit not as bad. How tight am I ment to screw it down?

So when you blocked the hole completely did it continue to hunt?

big damo · Post by **big damo** » Mon Jul 21, 2014 4:20 pm

It stopped hunting all together and what idling spot on. Have screwed the fitv all the way down and gone back 2 turns but she's still hunting. Did notice that the white plastic in the fitv is damaged tho

Post by **NafemanNathan** » Mon Jul 21, 2014 4:26 pm

big damo wrote:Did notice that the white plastic in the fitv is damaged tho

That'll be it then.

The valves can leak (I had a dodgy one on my 3rd gen that I ghetto fixed), but if yours valve looks damaged then it most probably isn't sealing.

Ergo... You need a new one