My third gear issue...

[Silver Streak]

Not sure this is a problem but my car's never done this before.

If I turn off the O/D, and then floor the car, at about 3800-4000rpm (around 115km or so) I actually start losing speed as if there's no fuel going to the engine. Then, about 2 seconds later, my car will start accelerating again. This all happens with the pedal to the ground.

My car doesn't do this with O/D on. I'm thinking some kind of vacuum issue? ACIS? ECU?

I don't ever remember my car doing this...anybody have any ideas?

[Phi]

Never experienced such an event.

Turbo lag :p

[Xenon]

So your car stops accelerating while your foot is on the gas, and without any change it starts accelerating again??

[Silver Streak]

Yup...I'll floor it, it'll hit 4k or so...then it'll dip about 200 RPM, and then go up again...this all happens only with my O/D off.

[Eye8Pussies]

hmmm....wild guess, but probably the ecu.....most likely not the acis.....

I think your car might be looking for 4th gear, and then after not finding it, THEN continues to accellerate in third or something like that....

[Phi]

wild guess...lack of tranny fluid causing pressue loss and disprupting shifts

[Xenon]

It could be the ECU screwing around! And it could be your transmission!

But because you're saying it only happens when your O/D is off, I would think it's the ECU!!

[EKam]

*vaccum test*

[Xenon]

Well, In know for sure it's not the tranny. Because if it's functioning properly with O/D than it's something else..

[Silver Streak]

Yeah, I'm not even sure how to diagnose the problem, if indeed it's a prob. I guess I'll just ask Basil next time I'm at T-Lex.

My vacuum is fine elegant...that handy dandy vacuum gauge is finally paying off!