revivo73

Hello

For the last couple of weeks my 2006 RX-8 has been going as if DSC/TCS are off. Both DSC and TCS (skidding car symbol) lights are off, so they are both on.

This problem started after I left the car for more than 1 month without driving (as I waited its IG Coils to come) When the coils came and after I installed them and opretated the car, I didn't need to apply the calibration procedure of DSC/TCS because as I tried to drive the car out of the parking place I had to do many steering. It automatically calibrated itself.

But after I noticed the deficiency of this "automatically calibrated" DSC/TCS, I applied the calibration procedure by disconnecting and reconnecting the battery.

One thing I noticed during the DSC/TCS calibration was that the calibration carried out very easily quickly, much easier than when I tried it several months ago. I guess that it might have something to with the inadequate DSC/TCS.

I was going to apply the DSC/TCS calibration once more but today I didn't have enough time for it. Tomorrow I'm going to do that. Before I do that, could you give some advice on what might be wrong with this car?

RIWWP

iTrader: (2)

Hmm, I am having a really hard time figuring out what you mean.

Are you saying that with the TCS/DSC lights off, you can power slide the car around?

If you are just wondering about the lights, if they are off the TCS/DSC is engaged. Re-calibration is as simple as rolling the tires 10-15 feet and turning the steering wheel the whole way one way, then the whole way the other.

I'm not sure what you are finding wrong here.

revivo73

When I change the lanes fast the car slides too much. The speed is about 100km/h that is not so much to cause such a slide.

And when I give full throttle (on rapid acceleration), the car slides on the back.

Now I will re-calibrate it and post the results.

RIWWP

iTrader: (2)

It isn't a solve-all. You still have to have grip. Are your tires shot? Alignment jacked up? Suspension failure?

revivo73

I still couldn't do the re-calibration. The tires are ok, they're new (used for 10 months) The stability was perfect one or two months ago, with the same tires.

The car has a grip but when I drive it in full throttle, the back is not aligned with the front. The back leans towards left.

I don't think there's a suspension failure. I guess it's got more to do with the electrical something.

RIWWP

iTrader: (2)

Can you define "lean"? The car is actually lower on the left rear than the right rear?

Or do you mean that in a straight line the rear of the car pulls left?

revivo73

Yes the second sentence is true. in a straight line the rear of the car pulls left.

Overall, there 's a significant deviation from the very good handling it used to have.

I can say that DSC/TCS are off really. I disabled DSC (the button on the lower left) and yellow DSC light turned on. I tried going at full throttle and I can say that it was no different from driving when the DSC was on (yellow DSC light off)

I guess, the car 's ECU (or whatever it's called) could not properly calibrate the DSC/TCS.

Because I was busy throughout the day, I still could not recalibrate it.

RIWWP

iTrader: (2)

Ok, stop trying to "calibrate it". This isn't a calibration problem. If it WAS a calibration problem, then it would drive perfectly fine with it off, and terrible with it on. It drives the same on or off, so this isn't a DSC/TCS problem

If the rear only pulls left on acceleration, does it also pull right when you let off the gas sharply? (no brakes).

What are the tire pressures on each of your 4 tires? I had a similar problem on a Miata where a tire pressure loss in one rear tire was pushing the car in one direction on acceleration, and pulling the car in the other direction during deceleration.

revivo73

It might be pulling right when I let off the gas sharply, I don't remember exactly but it might be doing that.

As for the tire pressures, I don't know them but they might have changed because the car stood on concrete floor for a long time, and some of them might have lost pressure more than others perhaps. I will check them at the first occasion.

RIWWP

iTrader: (2)

Yeah, I suspect it's just going to be a tire pressure problem