Surging idle/Airlock issue?... SORTED!

Post by **NafemanNathan** » Mon Mar 11, 2013 3:53 pm

Doesn't have one

Post by **4thgenphil** » Mon Mar 11, 2013 3:53 pm

NafemanNathan wrote:Doesn't have one

thats the problem!

Post by **NafemanNathan** » Mon Mar 11, 2013 3:56 pm

Should I just pop it in the fuel tank?...

Post by **indigolemon** » Mon Mar 11, 2013 3:57 pm

You need dispersible aspirin in the fuel tank.
Also, it doesn't have a lambda? I thought it did (maybe I didn't pay enough attention when I had mine

)

[edit] Aha! Wait, the USDM cars have them, the UKDM ones don't. We just have a strange casting on the fanimold where it would be if we did have one. I think ...

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Mon Mar 11, 2013 4:15 pm

What happens if you lift the throttle butterfly *just* off the stop? Does it calm down then?

And what happens if you unplug the coolant temp sensor?

Post by **NafemanNathan** » Mon Mar 11, 2013 5:55 pm

Yeah, honda-hardy's has a lambda sensor or two because his is an import, but mine certainly has none.

If I lift the butterfly at the TB then it does just idle at whatever I'm revving it too, but it does have to be about 2k around about not to surge.

If I disconnect the temp sensor then it kicks flames out the back. And then won't re-start when hot. I know this as the temp sensor was faulty so I've replaced it.

A new piece of intel... Just had her back from the MOT. Max emissions is 3.5%... Mine is at 0.08%

So she's practically running on air. Whilst it was out for MOT I went and picked up a new fuel filter and injector cleaner, but I'm thinking it must be down to another sensor now. Just need to find out which one.

BMCC · Post by **BMCC** » Tue Mar 12, 2013 8:18 am

Have you tried blocking the FITV hole in the throttle body to see if idle returns close to normal? Get the car up to temp and block the lower hole with your finger. If the idle returns close to normal then your FITV is the problem. If this does nothing then block the upper hole. The car should stall, if not you've got an air leak somewhere.

Post by **NafemanNathan** » Tue Mar 12, 2013 8:57 am

BMCC wrote:Have you tried blocking the FITV hole in the throttle body to see if idle returns close to normal? Get the car up to temp and block the lower hole with your finger. If the idle returns close to normal then your FITV is the problem. If this does nothing then block the upper hole. The car should stall, if not you've got an air leak somewhere.

Cheers bud, I've just said this is my next port of called in my profile thread actually

Fingers firmly crossed, because otherwise I really haven't got a clue what's left

The "S" express · Post by **honda-hardy** » Tue Mar 12, 2013 12:11 pm

i think its an inlet manifold leak, get a piece of hose and use it as a stethescope, insert the hose around the back of the inlet and listen at the other end for change in pitch, if you have a leak then you will hear a difference as you move the hose end around.

Post by **Lude-dude** » Tue Mar 12, 2013 12:16 pm

does the 3g have a fitv?

if so I would check it out

also have you tried blasting carb cleaner or intake cleaner through?

could be coked up or something