EFI 202 stalling when cold.

[DANNY8]

Every morning or whenever we first start up PEAKN6 it won't idle until about 30 seconds of giving it a few revs (not heaps, maybe 1500rpm or sumfin). Sometimes I go to reverse out of the yard and as I barely have my foot on the pedal the revs die down a bit, then go back up, then down, and up again and does that a few times then stalls when the revs die to much.

It's not a huge problem coz I can just ride the brake a little while giving it a few revs.....but it's just getting annoyng coz I know it shouldn't be doing it.

It's had a full dyno tune (got 72rwkw) and that didn't pick anything up.

Anyone know what could be causing it? Maybe a faulty sensor or sumfin?

Cheers,
Danny

[Sammy]

if its only when its cold that might be the auxilary air valve, which is located on the drivers side just behind the dizzy, has hose going in and out of it connecting to inlet manifold and air pipe on the other end.

could also be that the idle is too low, i've found with my motor if the idle is too low it will hunt up and down the revs.

[Not_An_Abba_Fan]

Also check all your bolts holding the intake together are tight, if you get a slight vacuum leak it will do that too, when it warms up everything expands and the leak stops.

[Goon]

Sounds like timing 72kw is a bit poor for an efi, they do 120?

Have u done anything to her lately?

[craigvk]

Sounds like timing 72kw is a bit poor for an efi, they do 120?

Have u done anything to her lately?

What! 120 are you kidding? Like 80 MAX. The 202 hasn't got power.

[Goon]

I got 83 factory and my timing's spot on, i beat shes pulling somewhere close to that 72 atm.

Check the vaccum leaks, replace hoses

[JD]

also that 72 RWkw so its prob about 90 at the fly peoples

[Goon]

Peakns an auto? maybe its the box? needs a tune.. could be the computer? or a sensor?

[craigvk]

The flywheel power doesn't mean much. It's how much you have on your back wheels.

[DANNY8]

if its only when its cold that might be the auxilary air valve, which is located on the drivers side just behind the dizzy, has hose going in and out of it connecting to inlet manifold and air pipe on the other end.

could also be that the idle is too low, i've found with my motor if the idle is too low it will hunt up and down the revs.

So wats gotta be done if it's the aux air valve? I'm not sure how all this EFI gear works haha .

Also check all your bolts holding the intake together are tight, if you get a slight vacuum leak it will do that too, when it warms up everything expands and the leak stops.

Thx mate, will check those 2morrow and see if they'll go any tighter....I'm guessing it's not as easy as the carby motors coz of the intake....damn!

I got 83 factory and my timing's spot on, i beat shes pulling somewhere close to that 72 atm.

Check the vaccum leaks, replace hoses

Peakns an auto? maybe its the box? needs a tune.. could be the computer? or a sensor?

Yeah 83kw at the flywheel. The EFI 202's produce 109kw at the flywheel. I'm pretty sure it's about a 30% loss of power through the trans, if thats true the EFI 202 should have about 76.3rwkw (and carb 202's about 58.1rwkw), so 72rwkw can't be all that bad. The motor has done over 200,000k's, the clock stopped at 204,000 which was like it when we bought it off an elderly couple.

It's had a dyno tune a few months back, but we were running it on 98 octane premo, where as now we only run 95 premo (the nearest 98 premo is at a servo out on the highway just out of town) and on a hot day it detonates heaps easy so gotta redo the timing.

And yeah she's an auto for now. When I finish my project VH (hopefully in a few months) we're gonna take PEAKN6 off the road for a while. We need to hunt down 2 donor cars. One which has a manual in it (cheaper buying a wreck then a complete manual setup) and another with EFI. It sucks the EFI VK's didn't come out with a manual behind them (so I've read) otherwise we could just hunt down an EFI manual. Brad wants the manual for PEAKN6, and I want all the EFI gear for my VH. But while PEAKN6 is off the road we'll prolly pull the motor out and put a gasket kit through it and clean it all up and repaint it, maybe chuck a new cam and straight cuts in it (if he doesn't get sick of listening to mine) and get the head reco'd.

Thx heaps for all ur help everyone, and I'll let ya's know how I go!

Cheers,
Danny

[Sammy]

So wats gotta be done if it's the aux air valve? I'm not sure how all this EFI gear works haha .

well the auxilary air valve is supposed to let more air into the engine when its cold to bring the idle up, and as the engine warms up the air valve is supposed to close. i guess you can check if its working at all, if you squeeze the pipe going from it to the manifold to block the air going through it and see if it changes the idle speed, if it does that means its atleast open, then when the engine is fully warmed up, do the same thing, if its still open then its not working properly.

[DANNY8]

Thx heaps, will check that in the mornin when we go to use it first thing.