ABS and Traction Control seems to be acting up
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+1. abs/psm cels and a rough idle, i would check your MAF... first. also, cleaning them is a stopgap measure, sometimes it helps, sometimes not.. if you really want to eliminate the maf as the source of the problem, you'll need to start again with a new one.
Last edited by '02996ttx50; May 3, 2012 at 08:16 AM.
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Hey Guys, finally got my Durametrics kit. I got the following:
4420 Rate-of-turn sensor
5525 Incorrect data transfer with DME master control unit
Any ideas? Easy fix or have to bring to a shop? Any info would be greatly appreciated!
4420 Rate-of-turn sensor
5525 Incorrect data transfer with DME master control unit
Any ideas? Easy fix or have to bring to a shop? Any info would be greatly appreciated!
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Joined: May 2010
Posts: 1,062
From: Utah
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I had some very strange alignment issues and PSM kicking in without warning. An instance in a moderate tight 40 MPH turn, where the rear tires slid, the PSM braked and upset the handling.
All this is when I fit new Sumi ll rear tires with my used Michelin PS2 fronts. I was in alignment and PSM hell for about 6 weeks/350 miles over the winter. The car seemed obsessed. I then fit new Sumi ll fronts wher the rotations per mile were that same as the rear. My car has never felt better. All the weird things instantly went away, the car now feels better than it ever did with the PS2s. I can corner aggressively, the tires feel really grippy, all the alignment issues like hunting and oversteer are gone.
This confirmred two things, one that circumferential size matching front to rear is important to make PSM work as designed and secondly to keep the caster angle and weight distribution correct. A very small F to R tire diameter differential will cause all sorts of handling woes I found out.
All this is when I fit new Sumi ll rear tires with my used Michelin PS2 fronts. I was in alignment and PSM hell for about 6 weeks/350 miles over the winter. The car seemed obsessed. I then fit new Sumi ll fronts wher the rotations per mile were that same as the rear. My car has never felt better. All the weird things instantly went away, the car now feels better than it ever did with the PS2s. I can corner aggressively, the tires feel really grippy, all the alignment issues like hunting and oversteer are gone.
This confirmred two things, one that circumferential size matching front to rear is important to make PSM work as designed and secondly to keep the caster angle and weight distribution correct. A very small F to R tire diameter differential will cause all sorts of handling woes I found out.
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Joined: Apr 2009
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From: San Jose, CA
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I had some very strange alignment issues and PSM kicking in without warning. An instance in a moderate tight 40 MPH turn, where the rear tires slid, the PSM braked and upset the handling.
All this is when I fit new Sumi ll rear tires with my used Michelin PS2 fronts. I was in alignment and PSM hell for about 6 weeks/350 miles over the winter. The car seemed obsessed. I then fit new Sumi ll fronts wher the rotations per mile were that same as the rear. My car has never felt better. All the weird things instantly went away, the car now feels better than it ever did with the PS2s. I can corner aggressively, the tires feel really grippy, all the alignment issues like hunting and oversteer are gone.
This confirmred two things, one that circumferential size matching front to rear is important to make PSM work as designed and secondly to keep the caster angle and weight distribution correct. A very small F to R tire diameter differential will cause all sorts of handling woes I found out.
All this is when I fit new Sumi ll rear tires with my used Michelin PS2 fronts. I was in alignment and PSM hell for about 6 weeks/350 miles over the winter. The car seemed obsessed. I then fit new Sumi ll fronts wher the rotations per mile were that same as the rear. My car has never felt better. All the weird things instantly went away, the car now feels better than it ever did with the PS2s. I can corner aggressively, the tires feel really grippy, all the alignment issues like hunting and oversteer are gone.
This confirmred two things, one that circumferential size matching front to rear is important to make PSM work as designed and secondly to keep the caster angle and weight distribution correct. A very small F to R tire diameter differential will cause all sorts of handling woes I found out.
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Joined: Aug 2010
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From: Coronado, CA
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I'm having the exact issue right now. Going into turns the car feels like the brakes pulse and the car downshifts, unsettling the car. I also get the traction control light blinking.
I have mismatched tires, front to back, as well. V12 on the rear on older Michilins on the front. Could that be the problem? I was thinking it was going to be much worse then that! Fingers are crossed!
I have mismatched tires, front to back, as well. V12 on the rear on older Michilins on the front. Could that be the problem? I was thinking it was going to be much worse then that! Fingers are crossed!
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changing tires even to oem spec'd tires, let alone differing ( incompatible ) sizes will/can cause the abs/psm cels in our cars. it's just part of the joy. *usually* the ecu will adjust to the *new* tires ( provided they're within oem spec ) and the cels will stop.
happened to me many times.
happened to me many times.
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Joined: May 2009
Posts: 7,984
From: la
Rep Power: 607
I'm having the exact issue right now. Going into turns the car feels like the brakes pulse and the car downshifts, unsettling the car. I also get the traction control light blinking.
I have mismatched tires, front to back, as well. V12 on the rear on older Michilins on the front. Could that be the problem? I was thinking it was going to be much worse then that! Fingers are crossed!
I have mismatched tires, front to back, as well. V12 on the rear on older Michilins on the front. Could that be the problem? I was thinking it was going to be much worse then that! Fingers are crossed!
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Joined: Aug 2010
Posts: 59
From: Coronado, CA
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[QUOTE='02996ttx50;3541787]lord have mercy, get rid of that sh*t. if you're gonna run a $700 set of tires on a $125,000.00 car. at least, have them match. please? you'll thank me. [/QUOTE
Done! All tires match and the car drives great now! Hey, it's a 1,000 set of tires and a 50k car for me, get your facts straight, LOL!
[/QUOTEDone! All tires match and the car drives great now! Hey, it's a 1,000 set of tires and a 50k car for me, get your facts straight, LOL!
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Joined: May 2009
Posts: 7,984
From: la
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Done! All tires match and the car drives great now! Hey, it's a 1,000 set of tires and a 50k car for me, get your facts straight, LOL!
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