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View Full Version : TCS Problem. Any ideas?


SpoCom2nr
03-14-2007, 06:23 PM
Well this problem has started happening today. I'll start with some background information:

Yesterday, I got my intake in the mail, and took the stock airbox of the car... I thought I'd be able to put the intake on, but I didn't have the tools with me at the time. So I put the stock airbox back on and accidentally left the clamp lose that holds the stock intake hose onto the stock airbox. I tightened it the next day after I got out of work. Are you with me so far? Now I have no reason to beleive that this has nothing to do with the problem I have ran into so far, so disregard this, unless it could possibly have to do with my problem. Again I highly doubt it, but who knows.

Then today I started my car up after I got off the bus and I was going to work. Everything was ok. No lights or nothing. This is when I still had my clamp lose holding the intake hose onto the intake box and I didn't know yet. But again. Highly doubt that has anything to do with the problem. So it's a normal day, I'm going to work and I'm on the backroad going about 55 (the speed limit), and I keep my speed consistent without applying the cruise control. As I'm driving down the road, I hear this clunk noise. It felt like I ran over a small animal about the size of a cat that some car already had ran over previously. I thought nothing of it, except that I wish I could've dodge it. Then my abs, tcs off, and svs light came on about 2 tenths of a mile down the road, and I knew something was up. I automatically started driving a little slower than the posted speed limit because I didn't want to mess anything up... I got to work and everything. I checked my tire pressures and they were ok. I thought it might have had something to do with my left front tire because that's where the noise had come from on the back road and the slight jolt that I felt. The car was off while I did this. Then I turned the car on again, and no lights were on! I was releived to see this and thought everything was ok, but I knew that I shouldn't just assume that everything is ok and a car fixes itself... It hardly ever works that way.

So I'm thinking everything is good, my shift at work is over and I get back in the car. I'm driving back home and still no lights on. I double check it though by pressing the tcs button on my dash board a few times making sure it goes off and on off and on while driving. Everything is good and I park my car in the driveway and think nothing of it.

Then I put my intake on. Connect everything up etc etc. I drive down the road to test it out, and as I'm driving on that back road again, my "tcs off" light comes on only and I'm like "oh shit. Now what?" So I pull over on a side road and I check under the hood and everything. My intake is tight, the sensor is in the intake and that's all good. So I'm wandering what's going on. I drive back home on that backroad this time being cautions and going 45 because it says my tcs is off and it's raining and there is slush on the roads.

I park the car for sometime and check it after dinner. Light still comes on when ever I turn the car on and start it. So this is what happens. I drive down the road and I notice that automatic transmission is shifting into it's gears in a abnormal way. It jolts more when it goes into the next gear. I go back into my driveway and test the gears out. Put my car in park and then put it in the first gear and I get a pretty big jolt... I'm thinking oh shit and I don't know what to do. I leave the car alone.

Keep in mind my car is automatic... First car I've ever had and I don't know what's happening.

SpoCom2nr
03-14-2007, 07:45 PM
Well, my dad drove my car and the light is now off. I can now turn the tcs off and on again... But I still don't feel good about it. I am wandering what happened and why it happened... I'll be talking to my auto tech teacher and call the dealership and speak to a tech. Still, no one has any ideas why this is happening?

Matt95GT
03-15-2007, 08:08 AM
If the IAT sensor is disconnected/lose connection or damaged, it will cause issues and hard shifts. If you installed an intake, than you obviously had to do something with it - this is likely when the cause occurred.

SpoCom2nr
03-15-2007, 09:27 PM
Well the whole intake is in the car right now. And I don't know what happened, but the car is running normal again and the lights are off that were on. I don't know what was going on, but it was freaky. Anyways, this started happening before I put the intake in... That's why I think it had nothing to do with the intake.

tenspeed
03-19-2007, 08:42 PM
Originally posted by SpoCom2nr
. I drive back home on that backroad this time being cautions and going 45 because it says my tcs is off and it's raining and there is slush on the roads.

If you have a bad wheel sensor or a bad wheel sensor connection, it will light up the ABS, Trac off and SVS lights. You first noticed it in the rain and it went away the next day.

I would suggest checking, cleaning and waterproofing the sensor connections at the front wheels.

The tranny might be shifting hard because of the new intake. I have read about something that the computer has to relearn when changing intake air.