4g idle hunting issue

Post by **NafemanNathan** » Fri Oct 09, 2015 3:24 pm

Sorry, I remembered it wrong, but not sure how after it took me so long to find the problem

The temp sender was the cure for my non-restarting issue...

But it was the FITV that was causing my surging.

http://www.ludegeneration.co.uk/profile ... 2-130.html

Post by **Merlin** » Fri Oct 09, 2015 3:25 pm

Have you ever swapped over the alternator? My bouncing idle stopped when I changed my alternator, It could have been coincidence however BMCC said this about it.

BMCC wrote:The idle control system uses a signal from the alternator to know when it is charging (so it can raise rpms to compensate for the extra drag). If you changed the alternator and this stopped the bouncy idle then it looks like a faulty alternator signal was the cause of your bouncy idle.

Merlin wrote:Ever since I have owned it, the car has had a bouncing idle. See thread about it:

http://www.ludegeneration.co.uk/honda-p ... -t898.html

However after simply putting in another alternator the problems seems to be cured

[youtube]nT80RyMbxOY[/youtube]

I noticed the lack of bounching when I drove it in town this lunchtime, my drive to work in the morning doesnt have any stops so I didnt notice it. I have no idea how its sorted itself but I guess its a result Even though it doesnt settle straight away.

With my VTEC hesitation gone and the bouching stopped im only left with a knock sensor CEL to deal with

http://www.ludegeneration.co.uk/post15812.html#p15812

Post by **Drax** » Fri Oct 09, 2015 3:29 pm

no worries nath!
ill change those couple of sensors/senders anyway, you never know.
ill also swap the main relay and make a new video of how its running at the moment.

plus ill change the alternator for Will's one instead if I don't get anywhere with the above, cheers Merl! useful having Will's buggered lude on my drive

Post by **NafemanNathan** » Fri Oct 09, 2015 3:34 pm

I had swapped the temp sensor as well when trying to find my surging issue, but it didn't do anything. Certainly worth trying though.

Also, be careful with the sender... They like to shear. Probably best not to bother swapping that one.

Post by **NafemanNathan** » Fri Oct 09, 2015 3:41 pm

So have we got a video of your hunting issue Dan?

Post by **Drax** » Fri Oct 09, 2015 3:46 pm

NafemanNathan wrote: Also, be careful with the sender... They like to shear. Probably best not to bother swapping that one.

roger! ill just do the sensor swap.

NafemanNathan wrote:So have we got a video of your hunting issue Dan?

not yet, ill get a video up asap from it starting up to it eventually hunting

Post by **Drax** » Sun Oct 11, 2015 6:33 pm

quick update, today i swapped the main relay for a spare, dizzy and coolant temp sensor - all made no difference.

tomorrow i will borrow a multi-meter to test the output of the alternator to check that's up to scratch at 14v.

i have made a vid of the hunting and rough idle so will post that up 2moz

Post by **Merlin** » Mon Oct 12, 2015 9:10 am

Drax wrote:i will borrow a multi-meter to test the output of the alternator to check that's up to scratch at 14v.

My alternator always kicked out the correct voltage.

Post by **Drax** » Mon Oct 12, 2015 10:16 am

Merlin wrote:
Drax wrote:i will borrow a multi-meter to test the output of the alternator to check that's up to scratch at 14v.
My alternator always kicked out the correct voltage.

ok ill still see if I can change it. my hunting seems more extreme than yours in your vid, my idle starts at 3k now

and then hunts within the first minute, before even warmed up. I made a vid of it yesterday but not had a chance to upload it yet, will do that tonight.

I may go down the blank the fiav route as a test as well, even though I know its not this.

Post by **NafemanNathan** » Mon Oct 12, 2015 10:22 am

No point in blanking the FITV if holding yout thumb over the throttle body hole during idle doesn't do anything. You'll only cause yourself hassle during cold start up as well then.