Mysterious Traction control
Thread Starter
Pro
Joined: Nov 2003
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From: Central & South-Beach FLORIDA
St. Jude Donor '19
Mysterious Traction control
I have a 99 FRC. Sometimes When I driving the T/C will come on and the Dick will say" traction control active" The car will not accelerate until I disengage the T/C by pushing the button. This occurs when I am going straight and in turns. The car is not holding any codes after it does it. So, I have to have a tuner ride in the car and hope it does it while it plugged into the diagnostic computer. We are thinking; yaw sensor, wheel sensor or electrical harness problem. Has anybody had this problem?
Thread Starter
Pro
Joined: Nov 2003
Posts: 694
Likes: 5
From: Central & South-Beach FLORIDA
St. Jude Donor '19
WHA? I was advised that the supras wre great for auto x and street racing. I have raced with them and they hold up fine. Or maybe you were implying rice supra?
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Race Director
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From: Houston, Tx Got traction?
CI 5-6-7-8-9-10 Veteran
St. Jude Donor '07-'08
Ok, well, i had a similar problem as well, however i think i may have been getting a code, i don't remember exactly....Have you had your Steering shaft disconected lately?
Melting Slicks
Joined: Oct 2004
Posts: 2,083
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From: Sunnyvale CA
If you're running 18's all around the front wheels will be turning at a somewhat lesser rotational speed than what would be normal with 17 inch tires. That means your computer will sense that your rears will be turning slightly faster in comparison to the fronts than is normal. I suppose it is possible your traction control is sensing this as wheel slip. Perhaps someone with more technical knowledge than I have can confirm or debunk this theory.
Also, it is a DIC, not a Dick. ;-)
Also, it is a DIC, not a Dick. ;-)
Le Mans Master
Joined: Sep 2003
Posts: 5,374
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From: Jacksonville Florida
Originally Posted by 99C5Alan
If you're running 18's all around the front wheels will be turning at a somewhat lesser rotational speed than what would be normal with 17 inch tires. That means your computer will sense that your rears will be turning slightly faster in comparison to the fronts than is normal. I suppose it is possible your traction control is sensing this as wheel slip. Perhaps someone with more technical knowledge than I have can confirm or debunk this theory.
Also, it is a DIC, not a Dick. ;-)
Also, it is a DIC, not a Dick. ;-)
That does make a lot of sense, but there are a lot of folks with larger than stock wheels out there.
I wonder if that feature can be reprogrammed?
Le Mans Master
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From: AKA Harvey Mushman-I know just enough to be dangerous "Those who sacrifice liberty for safety deserve neither"- B. Franklin
Senior Member
Cruise-In V Veteran
Originally Posted by 99C5Alan
If you're running 18's all around the front wheels will be turning at a somewhat lesser rotational speed than what would be normal with 17 inch tires. That means your computer will sense that your rears will be turning slightly faster in comparison to the fronts than is normal. I suppose it is possible your traction control is sensing this as wheel slip. Perhaps someone with more technical knowledge than I have can confirm or debunk this theory.
Also, it is a DIC, not a Dick. ;-)
Also, it is a DIC, not a Dick. ;-)
You need to buy two tires of a different size.
Melting Slicks
Joined: Apr 2003
Posts: 2,989
Likes: 10
From: Columbus OH
ECSTA MX is a good tire, ECSTA Supra 712 is junk.
Try putting more air in the fronts. That's weird that you got that error, I have ran same size tires/wheels all around and I never got any error, even with the bald ones in the back.
Try putting more air in the fronts. That's weird that you got that error, I have ran same size tires/wheels all around and I never got any error, even with the bald ones in the back.
Team Owner
Joined: Aug 2003
Posts: 24,333
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From: VA
St. Jude Donor '03-'11
There are a number of people running 18's all the way around. The combination of width*aspect ratio gives you the desired difference in the true tire diameter that is needed for the system to work correctly. Someone will chime in with their aspect ratios front and rear...
Racer
Joined: Oct 2003
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From: Port Orange Florida
Originally Posted by I-SPEEED
I have a 99 FRC. Sometimes When I driving the T/C will come on and the Dick will say" traction control active" The car will not accelerate until I disengage the T/C by pushing the button. This occurs when I am going straight and in turns. The car is not holding any codes after it does it. So, I have to have a tuner ride in the car and hope it does it while it plugged into the diagnostic computer. We are thinking; yaw sensor, wheel sensor or electrical harness problem. Has anybody had this problem?
Le Mans Master
Joined: Sep 2003
Posts: 5,374
Likes: 0
From: Jacksonville Florida
Originally Posted by Wah
ECSTA MX is a good tire, ECSTA Supra 712 is junk.
Try putting more air in the fronts. That's weird that you got that error, I have ran same size tires/wheels all around and I never got any error, even with the bald ones in the back.
Try putting more air in the fronts. That's weird that you got that error, I have ran same size tires/wheels all around and I never got any error, even with the bald ones in the back.
Shhhhhhh. Don't tell him that!!! I've got Ecsta MXs all around and I run against this guy in autocross events. (He smoked almost everybody last time out except some blown Z06s - but I think he's cammed up with some other goodies under his hood we don't know about.)
Race Director
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From: Houston, Tx Got traction?
CI 5-6-7-8-9-10 Veteran
St. Jude Donor '07-'08
Although personally i don't believe it's tire ratio's he is running too small of a rear tire, if he goes up to a 315 35 18 that'll raise his rear tire to a larger diamater, and fix his ratio problems....However he's been running this way for a while now!?
Hey Cajun, assuming i get my car fixed <exhaust problems> Matt and I are talking about going racing tonight, u should take a cruise down here, we'll find out exactly what his car has!
Hey Cajun, assuming i get my car fixed <exhaust problems> Matt and I are talking about going racing tonight, u should take a cruise down here, we'll find out exactly what his car has!
Le Mans Master
Joined: Sep 2004
Posts: 5,707
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From: Los Angeles
18" wheels all the way around is fine. But you have to have the 1" stagger from front to rear. Go with a larger size in the rear or a lower profile in the front. In your case you have 275/35's, a 30 series in front or a 295 in the rear should solve the problem. Pretty much just as 99C5alan said.
Le Mans Master
Joined: Sep 2003
Posts: 5,374
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From: Jacksonville Florida
Originally Posted by stangkiller18
Although personally i don't believe it's tire ratio's he is running too small of a rear tire, if he goes up to a 315 35 18 that'll raise his rear tire to a larger diamater, and fix his ratio problems....However he's been running this way for a while now!?
Hey Cajun, assuming i get my car fixed <exhaust problems> Matt and I are talking about going racing tonight, u should take a cruise down here, we'll find out exactly what his car has!
Hey Cajun, assuming i get my car fixed <exhaust problems> Matt and I are talking about going racing tonight, u should take a cruise down here, we'll find out exactly what his car has!
I would but I've got my car in pieces parts right now. I took my K&N filter off and it's such a PITA to do I'm modifying it so it can be removed and cleaned easily.
I've got a Veteran's Day Parade tomorrow, too, so I'll be cleaning it up for that later.
But........ I've got the Evolution High Performance Driving School this weekend.
Now THAT is gonna be a lot of fun!!!
Instructor
Joined: Aug 2004
Posts: 191
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From: Ellicott City Maryland
Originally Posted by 99C5Alan
If you're running 18's all around the front wheels will be turning at a somewhat lesser rotational speed than what would be normal with 17 inch tires. That means your computer will sense that your rears will be turning slightly faster in comparison to the fronts than is normal. I suppose it is possible your traction control is sensing this as wheel slip. Perhaps someone with more technical knowledge than I have can confirm or debunk this theory.
Also, it is a DIC, not a Dick. ;-)
Also, it is a DIC, not a Dick. ;-)