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Old 10-11-2012, 05:35 PM   #1
Scooby Newbie
Member#: 308698
Join Date: Jan 2012
Chapter/Region: NESIC
Location: N. Hampshire
2008 Impreza 2.5i

Default ABS Failure, A/C Related? 08 Impreza 2.5i

Need Diagnostic Help

2008 Subaru Impreza 2.5i 5-door W/ 75,000

Hi, here’s a little background on this car. I purchased this particular car in January of this year for my wife and was looking for something good in New England that I could run into the ground. When I first got the car I remember needing front pads to pass inspection.

In the summer we had experienced a short period of time where we would come to a stop and the rpms would drop low and then the car kicked them back up before it dropped them down again and it actually stalled several times. I brought the car to my local Subaru garage and they weren’t able to find anything or pull any codes after I pushed them to take several test drives. After that point it seemed to go away.

Since that time I’ve had many trouble free miles until my wife was away for school last month in RI and I got a call that she had smoke coming from the car and had to pull over. Not knowing what this was related to at the time she wanted it towed and I said just keep driving the car or get it fixed or looked at in the area. We ended up thinking it might be related to the a/c because it seemed like that had possible been what stalled the car before so we decided it was safe and to keep that off.

After she had gotten back I had dropped it off at the dealership I work for which is a local Chrysler dealer and had one of the technicians take a look. He later told me both front calipers were locked up tight and the rotors and pads were toast from the amount of time it was intermittently acting up. When we experienced problems we would drive the car for about 10 miles and once in a while the brake pedal would become hard and the car would stop it or cause it hard to accelerate. We ended up replacing both front calipers, pads, and rotors and then he was not able to get the front ride side to bleed and said he couldn’t figure it out. I dropped the car off at the Subaru garage and they tried several things and diagnosed it as an ABS pump and said I needed to replace that. When I asked if that would fix it 100% they wouldn’t guarantee that but they said it’s fault anyway. We a little effort we got Subaru to pay for the new part and we paid for the labor. Everything seemed finding and they finished the work and called me and said it was all set but the rotors I had bought were warped and that I needed a new front caliper. Both of these items I exchanged and had brand new parts installed.

We drove the car for a week before my wife called and said she smelled brakes and we had the car towed back to the independent garage where I had the caliper and rotors swapped as I was told he used to work on Subaru’s for over 25 years. After some time he said that when he disconnected the abs system the brakes didn’t heat up and when he did the same run with them connected and came back it was extremely hot and more so on the front ride side. He also said the a/c compressor got hot from the 2 minutes where he drove the car from the lot into the garage. He was not able to diagnose too much into other than this comment. “ Brakes working ok when car arrived – performed full system scan for codes found 2 in system – (Integrated Unit B0301 / Can System 8301 – Checked codes using alldata diagnostic system – unable to confirm cause of codes. Possible issue with ABS control unit related to electrical system – test drove car app 10 miles front brakes (pass side more) heated up – after vehicle cooled down drove car on same route with electronic portion of recently installed abs control unit disconnected & brakes did not heat up – abs unit appears to be causing brakes to stay applied when driving – cleared memory after test drive”

I’m already into this for a lot of $$$$ and don’t really want to pay the dealer again. Has anybody ran into this issue or have any ideas?
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