Throttle stops working when accelerating..

[iViLe]

Hi,

For some reason when you try to accelerate quickly the throttle just goes back to idle mode and the pedal no longer does anything, to fix it i have to turn the car off and wait a minute. start it again and the pedal now controls the throttle again. It also does it before you start the engine, if i randomly keep pushing the pedal to the floor the throttle will randomly stop working again. Im running a stock 2008 ve l98 manual ute tune. When I was running a ls3 corvette tune it only did it twice. The only code that I can see that might have something to do with it is. P0606? Is it going into some kind of failsafe mode?

Thanks

[iViLe]

So I connected the scanner to the ecm and ran pids ETCPP1 and ETCTP1 with the ignition on and the engine off, if I slowly push the pedal once they both get to 50 the ETCTP1 drops down to 10% and the throttle no longer responds to pedal movement, but if i push the pedal really fast the throttle works fine. If I push it really fast to 100% and slowing back off ETCP1 drops back down to 10%, I have tried two different throttle bodies. also got code 1516 before.

[doubledip]

caused by wrong base tune in the ECU

either running a US Base tune and then have flashed a Holden tune in (no go)

or

have a Brass throttle blade and are running a early type ECU/OS

[iViLe]

Well it is a 2008 ecm, both throttles are the alloy coloured blades, when I actually first connected to the ecu it had no tune on it, is there a way to reflash the ecu back to normal?

[doubledip]

:) thats your problem.. your cant go flashing into a "blank" ecu a tune via EFILive or HPtuners etc... you need to have your ECU flashed via TECH2 with a base tune . This makes sure all the tables in the ECU are compatible with everything you are using (mainly the throttle tables / throttle body / pedal)

[iViLe]

So off to Holden with the ecu I'm assuming? :) unless somebody else in Au has a tech2?

[doubledip]

We have a tech2 and tis2web access as well and are in OZ sydney

[iViLe]

How interesting, How shall I contact you, cant msg you...

[doubledip]

msg'd you

[iViLe]

Sorry cant use prvmsg yet, email me, ivile at bur.st , thanks.

[doubledip]

emailed you not sure if i got it right?

if you didnt get it .. go to our website and email through that

[68problemchild]

Just curious, as I have a similar problem.

Would a new throttle body fix this? eg FAST or another manufacturer?

Has this been resolved?

Thanks!!!

[doubledip]

Will be flashing it today and sending back.

It is a very common problem that people face when they get either a E38 new or a second hand one from a totally different fit vehicle and flash straight over the top with tuning software a tune they want.

EFILive and the like dont flash the throttle tables that correspond with the Throttle Body and pedal like a TECH 2 / TIS do. So if you end up mix and matching pedals/Throttle Body and tune then you end up pwith random drop outs of throttle.