[camaro5]

Originally Posted by v111pilot

Once again, I was getting the reduced power issue, usually after stabbing full throttle and then letting off (probably the worst time for no power).

Anyway, back to the dealer for 7th (yes SEVENTH) time on this issue.

They had already replaced the accelerator pedal, checked, "tightened" and greased the connections all to no avail.

So this time the dealer stated that they called Chevrolet Tech and were told that this is a common issue, and that the fix is to run new wiring from the pedal to the ECM, bypassing the factory harness using "special" wire.

They repair ticket did not offer any further info.

This seems to have worked, as I have not had the issue again in about 200 miles.

So, fingers are crossed.

PS. I DO NOT have a throttle controller installed- Bone Stock

Sounds like EMI is corrupting signals to the ECM.

New wire must be better shielded.

[Teem0s42]

Just had this happen to me last night.. i also have VTC.... on the advanced diagnostic webpage it says "The electronic fuel control system is not performing as expected."

[K1SS MY SS]

I had this problem. Mine turned out to be the throttle controller. Took it off and haven't had issues since. It worked for a couple of months. My car is stock.

[BSFATONOVICH]

I have had this problem that last week. I have reset my TCU several times and keep getting this message. It was fun, but not fun enough to mess up my car. I emailed Vitesse but never heard back. Anyone want a messed up, I mean slightly used, TCU?

[MR-02]

Originally Posted by BSFATONOVICH

I have had this problem that last week. I have reset my TCU several times and keep getting this message. It was fun, but not fun enough to mess up my car. I emailed Vitesse but never heard back. Anyone want a messed up, I mean slightly used, TCU?

With the vtc, you have to choose a setting and just LEAVE IT THERE! Best drivable throttle response is between setting sp at 5-6. When you keep changing throttle levels, the cars processor gets all confused. Its a mother f--- slow processor in these cars!

The problem is that THE CAR cannot adapt fast enough to an ever changing throttle input when a person randomly starts switching up and down from sp 1 to 9 and then all also idle revs at 4000 plus rpm all over the place! Similar issues would happen if you suddenly start using 87 octane, drive hard, go back to 93 octane, and then to 87 again etc.

You will surely throw a code if you have a vtc, keep switching sp levels, and idle reving at 4000 or so -which gm has programmed to limit anyways.

The VTC is simply a voltage input changer, it is the car's stock tune that is the limiting factor! Thus you have to make the both of them learn to play together nicely!

The cars brain is dealing with enough crap with the pre set nannies giving voltage inputs, and things like and Drive Mode menu constantly trying to disappear (escape) from the settings page. Idle reving and switching sp levels just sends the car into a brain seizure.

The VTC is the best thing you can do before voiding your warranty.

[BSFATONOVICH]

Sorry I wasn't clear. I have had to reset my TCU because it keeps setting off the reduced power mode. I kept it at 6 and loved it. But I literally have had the warning come on 5 times in the last three days.

[MR-02]

Originally Posted by BSFATONOVICH

Sorry I wasn't clear. I have had to reset my TCU because it keeps setting off the reduced power mode. I kept it at 6 and loved it. But I literally have had the warning come on 5 times in the last three days.

sorry man my fault too...I just now went back and read the previous posts...I just thought the vtc was getting blamed again needlessly.

[BSFATONOVICH]

I love driving with it...but not worth it not working. Hopefully I can return and get a new one.

[Ecchi667]

Originally Posted by BSFATONOVICH

I love driving with it...but not worth it not working. Hopefully I can return and get a new one.

I was having that problem until recently. I posted this on another thread - give it a go yourself and hopefully it'll help:

"I've had a Vitesse on for a year now. Can't live without it. BUT, I was getting this intermittent problem. I'd have to recalibrate it every few months, and then it got more and more frequent, becoming weekly and then daily. Became a real pain but I HATED not having it on there. My only other mod was the skip-shift delete and the Roto-fab intake.

I believe I fixed it, though. I unfortunately did two things at once, so can't be certain which fixed it, but I *suspect* unplugging the negative terminal on the battery for a few hours and then plugging it back in to reset everything is what fixed it. I'd never done that when I put the Roto-fab on (even though it was in the instructions), and I suspect something needed to recalibrate but hadn't. The other thing I did was spray some compressed air and then WD-40 in the connectors between the VTC and the OEM harness, just incase something was stuck in there. I'm pretty certain the battery was the fix, though.

Just a heads-up. If you start getting the issue again, give that a shot and hopefully that'll be the end of it. It's a great product, and I'd hate to have to drive without it - the car is so much more fun with it."

[pjz1082]

Originally Posted by Ecchi667

I was having that problem until recently. I posted this on another thread - give it a go yourself and hopefully it'll help:

"I've had a Vitesse on for a year now. Can't live without it. BUT, I was getting this intermittent problem. I'd have to recalibrate it every few months, and then it got more and more frequent, becoming weekly and then daily. Became a real pain but I HATED not having it on there. My only other mod was the skip-shift delete and the Roto-fab intake.

I believe I fixed it, though. I unfortunately did two things at once, so can't be certain which fixed it, but I *suspect* unplugging the negative terminal on the battery for a few hours and then plugging it back in to reset everything is what fixed it. I'd never done that when I put the Roto-fab on (even though it was in the instructions), and I suspect something needed to recalibrate but hadn't. The other thing I did was spray some compressed air and then WD-40 in the connectors between the VTC and the OEM harness, just incase something was stuck in there. I'm pretty certain the battery was the fix, though.

Just a heads-up. If you start getting the issue again, give that a shot and hopefully that'll be the end of it. It's a great product, and I'd hate to have to drive without it - the car is so much more fun with it."

How many miles have you put on the car since doing this? I didn't have an issue with mine for almost a full year, but then it did happen.

[Ecchi667]

Originally Posted by pjz1082

How many miles have you put on the car since doing this? I didn't have an issue with mine for almost a full year, but then it did happen.

Same here. No issue for several months, then started monthly, then weekly, then daily, then every other time I drove.

Since "fixing" it I've probably only done another thousand miles or so, but I'm happy with it all so far, running at SP5. I definitely think it's worth trying, especially unplugging the negative terminal for 30 minutes or so to clear everything out (you won't lose radio settings etc as far as I recall) and then recalibrating the VTC once you have reconnected.

[pjz1082]

Originally Posted by Ecchi667

Same here. No issue for several months, then started monthly, then weekly, then daily, then every other time I drove.

Since "fixing" it I've probably only done another thousand miles or so, but I'm happy with it all so far, running at SP5. I definitely think it's worth trying, especially unplugging the negative terminal for 30 minutes or so to clear everything out (you won't lose radio settings etc as far as I recall) and then recalibrating the VTC once you have reconnected.

Thanks for the info and reply. I did love the product but didn't want to keep dealing with "limp mode".

[Ecchi667]

Originally Posted by pjz1082

Thanks for the info and reply. I did love the product but didn't want to keep dealing with "limp mode".

You're welcome, and I hear ya! That limp mode thing is super annoying!

[BSFATONOVICH]

Thanks for input. I actually disconnected the battery twice in as many days without lasting positive effects. I miss the VTC but can't justify having to recalibrate it everyday.