ABS light.... - 2003-04 Mach 1 Registry Owners Club

Machy uno · 04-08-2009, 08:44 PM

So I did a search and found some threads an this topic but not many people had actually ever responded to if they had fixed the problem. The ABS light turns on randomly under normal driving conditions, stays on for a bit and resets when I turn the car off. I got new rims and tires (265/35/18's and 295/35/18's), a couple of weeks ago, but I'm pretty sure thats NOT the problem. Most people agreed it was the ABS unit.....a $900 dollar fix. For those that replaced the unit did that turn off your light for good. Just want to fix the problem as the light is irratating and I don't think it will pass inspection.....

Manny32V · 04-09-2009, 07:22 AM

with 18s ive seen alot of machs with the abs light on.. and right after they mount the rims too. i myself saw it happen to my car one day that i try a friends set of 18s.
another reason why im sticking with 17s

3150Mach1 · 04-09-2009, 07:55 AM

Wonder if you unhooked the battery and truned the likes on for 30 minutes it would force the system to adjust to the 18s. Just a thought

GRB60 · 04-09-2009, 09:15 AM

I could be wrong here but with the tire sizes listed your wheel/tire combo makes for different diameters front and rear. The sensor thinks that there is some slippage because the fronts, being smaller than the rears, are turning faster than the rears.

Try swapping the stockers (or any combo where the diameters are consistent front to rear) and see if the light goes away. If it does the ABS module is working properly.

Machy uno · 04-09-2009, 09:35 AM

you are correct in the fact the tires are slightly different in height....but the traction light is not turning on, just the ABS. In all the threads I read through most people agreed that such a small difference in height would not turn the ABS light on. I did not unhook the battery to see if that would change anything....will try that this weekend. I know some people had the same problem and were thinking of changing the ABS sensor...anybody do this?

DOK · 04-09-2009, 11:46 AM

I have 18's, no ABS light on. I'm wondering if your sensors are ok, odds are one is bad or maybe something is screwed up, check your fuse. Or if you want the light off the easy way and don't need ABS, pull the fuse or the light bulb in the guage cluster.

04-08-2009, 08:44 PM	#1
Machy uno Registered User Join Date: Jun 2005 Location: houston, texas Posts: 1,499	ABS light.... So I did a search and found some threads an this topic but not many people had actually ever responded to if they had fixed the problem. The ABS light turns on randomly under normal driving conditions, stays on for a bit and resets when I turn the car off. I got new rims and tires (265/35/18's and 295/35/18's), a couple of weeks ago, but I'm pretty sure thats NOT the problem. Most people agreed it was the ABS unit.....a $900 dollar fix. For those that replaced the unit did that turn off your light for good. Just want to fix the problem as the light is irratating and I don't think it will pass inspection..... __________________ She was living in a single room with three other individuals. One of them was male and the other two, Well he!! the other two were females Gone but NOT FORGOTTEN http://www.cardomain.com/ride/330262

04-09-2009, 07:22 AM	#2
Manny32V Registered User Join Date: Apr 2007 Location: miami Posts: 400	Re: ABS light.... with 18s ive seen alot of machs with the abs light on.. and right after they mount the rims too. i myself saw it happen to my car one day that i try a friends set of 18s. another reason why im sticking with 17s __________________ Red Mach 1 5-Speed Eibach pro-launch spring, O/R Xpipe 2-1/2" magnaflow mufflers with dumps. motive 4.10 gears, Fidanza alumminum flywheel, CF Dual Friction clutch, Promotion PMP 750 3650 w/26 spline input shaft, Eation Limited Slip 31 spline dif, 31spline moser axles. c&l intake, diablo sport tunner, fordracing adj. lower control arms, steeda adjustable uppers. (NOS dry setup 125hp jet** Zex Bottle heater and Zex purge) mobile synteric motor oil. (MT- ET Streets 275/45/17)More to come!

04-09-2009, 07:55 AM	#3
3150Mach1 Love my Mach Join Date: Apr 2005 Location: Charlottesville, VA Posts: 13,678	Re: ABS light.... Wonder if you unhooked the battery and truned the likes on for 30 minutes it would force the system to adjust to the 18s. Just a thought __________________ 2003 slowmatic 11.105@117mph w/125 shot of Nitrous best to date Kooks LTsw/OR X, elect cutouts, JLT RAI w/C&L 85 MAH,1" Spacer,PP Lower intake,Accufab TB,160 T-stat,EF Cooling Mod,NX Kit,Mez Electric Water pump,SLP Linelock,FRPP 4.10s-Alum Dif Cover-Alum Driveshaft & SL, Steeda Bumpsteer,MM Alum rack bushings,Deep Alum Tranny pan,Predator,Steeda AUCAs,MM ALCAs, Dspecs,MM CC plates & FLSFCs,MRT Guage cluster,AEM WB,MRT hood struts,Seq TLs, carbon fiber hood/trunk/Cobra wing,220 amp alt

04-09-2009, 09:15 AM	#4
GRB60 Registered User Join Date: Feb 2004 Location: Harleysville, PA Posts: 2,144	Re: ABS light.... I could be wrong here but with the tire sizes listed your wheel/tire combo makes for different diameters front and rear. The sensor thinks that there is some slippage because the fronts, being smaller than the rears, are turning faster than the rears. Try swapping the stockers (or any combo where the diameters are consistent front to rear) and see if the light goes away. If it does the ABS module is working properly. __________________ 2003 Torch Red 5 spd w/ IUP Built: 7/16/03

04-09-2009, 09:35 AM	#5
Machy uno Registered User Join Date: Jun 2005 Location: houston, texas Posts: 1,499	Re: ABS light.... you are correct in the fact the tires are slightly different in height....but the traction light is not turning on, just the ABS. In all the threads I read through most people agreed that such a small difference in height would not turn the ABS light on. I did not unhook the battery to see if that would change anything....will try that this weekend. I know some people had the same problem and were thinking of changing the ABS sensor...anybody do this? __________________ She was living in a single room with three other individuals. One of them was male and the other two, Well he!! the other two were females Gone but NOT FORGOTTEN http://www.cardomain.com/ride/330262

04-09-2009, 11:46 AM	#6
DOK Registered User Join Date: May 2008 Location: LaPorte, IN Posts: 356	Re: ABS light.... I have 18's, no ABS light on. I'm wondering if your sensors are ok, odds are one is bad or maybe something is screwed up, check your fuse. Or if you want the light off the easy way and don't need ABS, pull the fuse or the light bulb in the guage cluster. __________________ MGW Short Shifter MM LCA's MM firewall adjuster MM Clutch quadrant Mac O/R Prochamber Bassani Cat-back FRPP Girdle JLT RAI FRPP Alum. Driveshaft 1/2" intake spacer 18" Mach Wheels Mach 460 delete SCT X3 Brenspeed tune 4.10's soon hopefully along with the 31-spline conversion when funds available.

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