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TCS comes on long trips

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Old 10-28-2009, 12:06 PM
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Default TCS comes on long trips

I don't have any problems with my TCS system unless I am going on extended drives (for like and hour or more on the freeway). The TCS light comes on and then pressing the button does nothing. It resets after I restart the car. Sometimes it even goes off after I get off the freeway and start doing about ten minutes or so of city driving. Anyone have any ideas? Gremlins?
Old 11-07-2009, 10:17 PM
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ttt...
Old 11-07-2009, 10:29 PM
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Mine does the same thing, i've never really looked into it though.
Old 11-08-2009, 11:17 AM
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Mine started when I got my Moser 12 bolt installed. Do you have an aftermarket rear end?
Old 11-08-2009, 03:32 PM
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Originally Posted by Nick D
I don't have any problems with my TCS system unless I am going on extended drives (for like and hour or more on the freeway). The TCS light comes on and then pressing the button does nothing. It resets after I restart the car. Sometimes it even goes off after I get off the freeway and start doing about ten minutes or so of city driving. Anyone have any ideas? Gremlins?
That happens if you have changed your tires to a different size, or if your tires are really worn down. The sensor gets wigged out when the tire diameter is not withing certain limits.

Mine will come on about 5 minutes after I get on the highway and steadily stay above about 73 mph. It also will not reset till the engine is shut down and restarted. The TCS system works perfectly as long as I never get above about 72 mph for 5 minutes of more.

It started the day I put 315/35/17 tires on the rear. Never did it before that for 4 years with my stock sized tires.

.
Old 11-09-2009, 09:13 AM
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So I am guessing that the sensor does the same thing with a different rear end because my tires have always been 275/40/17s. I did not have a problem before that. Is there a fix for this?
Old 11-09-2009, 03:02 PM
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Originally Posted by Nick D
So I am guessing that the sensor does the same thing with a different rear end because my tires have always been 275/40/17s. I did not have a problem before that. Is there a fix for this?
Back in 2002 when I first changed my rear tire size and put in my 12 bolt rear-end......I asked everyone from Strange to sponsors to tuners. There's nothing that can fix it.

There is no need for TCS on the highway, so its really no big deal. Next time it happens, just turn the key off and back on real quick once you're gtting off the highway and it'll reset back to normal.

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Old 11-11-2009, 06:32 PM
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Originally Posted by Nick D
Mine started when I got my Moser 12 bolt installed. Do you have an aftermarket rear end?
Nope, It was fine when i bought the car. Then i put in a 9 inch. When i took out the 9 inch and put the 10 bolt back in is when it started.
Old 11-24-2009, 09:54 AM
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I know this is an old post but mine had the same problem after some go fast mods were installed along with my 12 bolt.

In the tune. "min kpa" should be 0 and "max kpa" should be 100. This fixed all my problems.

I hope this helps.
Old 11-25-2009, 12:58 PM
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Mine did the same thing, and eventually I got a TPS sensor bad code, replaced TPS sensor and it fixed both problems. 3k miles later it hasn't happened again. I can only assume there was some sort of short in the TPS sensor causing issues with lots of circuitry.




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