kjocque
12-06-2007, 09:05 AM
This posting is in regards to a successful repair done to the ABS Controller unit on my 1999 Volvo V90 staton wagon. We struggled with the symptoms of this problem (multiple trips to the dealership) until Victor Rocha, [email protected] and http://home.earthlink.net/~vicrocha/ rebuilt the unit for us. I highly recommend Victor for the work he did on our ABS controller unit.
First is the email I sent to Victor after he successfully repaired our ABS Controller Unit which fixed the problem that had been plaguing us for months. Following that is the list of symptoms and the repair work done, unsuccessfully, by the dealer to resolve the problem.
Victor,
We are ready to declare victory in the battle with our Volvo’s warning lights.
On Saturday October 13 I installed the ABS Controller unit you repaired for us. From that point on we have not seen any warning lights on the console except the Check Engine light (you had warned us this light would stay lit). The car has run flawlessly.
We even got an unexpected bonus when a few days later the Check Engine light turned off and hasn’t been seen since.
You have been a godsend. My wife likes her car again. She told me, “It wasn’t the car’s fault, it was sick. We just needed to find the right doctor.”
NOTE: Today is December 13 and the car is still running problem-free.
Hello Victor,
I read about the work you do with ABS modules and wonder if you can help me with the problems I’ve been having with my 1999 V70 for the past few months.
The problem began in June just after I had my timing belt replaced. The brake and ABS warning lights began to go on and off and briefly. This would happen randomly, with long periods of problem free driving in between. If I was stopped or in low gear when the warning lights came on the car was (and is) reluctant to shift up, and sluggish off the line.
The symptoms have gradually worsened over the summer. Now, along with the problems described above, off and on I have all the symptoms you describe on your website. These include loss of speedometer, odometer, flashing yellow arrow, check engine light, transmission shift problems, cruise control switching off. All this happens after the brake and ABS lights begin to come on.
The real problem is that the dealership has not gotten any codes related to the ABS module and so are not telling me to replace it. When I took the car in they got codes only for the left front ABS sensor. They first cleaned and reinstalled the sensor and then later replaced it. Both times, this seemed to solve the problems for a while.
The symptoms are so similar to those you describe on your web site. The big difference is that for my car it is always a pairing of Brake and ABS warning light. The tracs light only rarely comes on during the episodes.
Here's an event list of service I've had done on the car:
6-8-07 Timing belt replaced. That evening I saw the first brief flicker of the brake and ABS warning lights both light up.
7-5-07 Problem returns stronger after C.V. boot replacement. Dealer correction – found code for left front ABS sensor. Checked sensor, bolts and exciter ring – all OK cleared code and test drove 20 miles.
7-6-07 Performed software downloads 155 to engine control module and 90K service.
7-17-07 Back in about problem. Sensor ordered. They check about idle fluctuations. They perform diagnostic tests and no ECM codes. They perform throttle cleaning per TNN 25-149A.
8-1-07 Replaced left front ABS sensor. No problem for 500 miles then all the symptoms returned.
First is the email I sent to Victor after he successfully repaired our ABS Controller Unit which fixed the problem that had been plaguing us for months. Following that is the list of symptoms and the repair work done, unsuccessfully, by the dealer to resolve the problem.
Victor,
We are ready to declare victory in the battle with our Volvo’s warning lights.
On Saturday October 13 I installed the ABS Controller unit you repaired for us. From that point on we have not seen any warning lights on the console except the Check Engine light (you had warned us this light would stay lit). The car has run flawlessly.
We even got an unexpected bonus when a few days later the Check Engine light turned off and hasn’t been seen since.
You have been a godsend. My wife likes her car again. She told me, “It wasn’t the car’s fault, it was sick. We just needed to find the right doctor.”
NOTE: Today is December 13 and the car is still running problem-free.
Hello Victor,
I read about the work you do with ABS modules and wonder if you can help me with the problems I’ve been having with my 1999 V70 for the past few months.
The problem began in June just after I had my timing belt replaced. The brake and ABS warning lights began to go on and off and briefly. This would happen randomly, with long periods of problem free driving in between. If I was stopped or in low gear when the warning lights came on the car was (and is) reluctant to shift up, and sluggish off the line.
The symptoms have gradually worsened over the summer. Now, along with the problems described above, off and on I have all the symptoms you describe on your website. These include loss of speedometer, odometer, flashing yellow arrow, check engine light, transmission shift problems, cruise control switching off. All this happens after the brake and ABS lights begin to come on.
The real problem is that the dealership has not gotten any codes related to the ABS module and so are not telling me to replace it. When I took the car in they got codes only for the left front ABS sensor. They first cleaned and reinstalled the sensor and then later replaced it. Both times, this seemed to solve the problems for a while.
The symptoms are so similar to those you describe on your web site. The big difference is that for my car it is always a pairing of Brake and ABS warning light. The tracs light only rarely comes on during the episodes.
Here's an event list of service I've had done on the car:
6-8-07 Timing belt replaced. That evening I saw the first brief flicker of the brake and ABS warning lights both light up.
7-5-07 Problem returns stronger after C.V. boot replacement. Dealer correction – found code for left front ABS sensor. Checked sensor, bolts and exciter ring – all OK cleared code and test drove 20 miles.
7-6-07 Performed software downloads 155 to engine control module and 90K service.
7-17-07 Back in about problem. Sensor ordered. They check about idle fluctuations. They perform diagnostic tests and no ECM codes. They perform throttle cleaning per TNN 25-149A.
8-1-07 Replaced left front ABS sensor. No problem for 500 miles then all the symptoms returned.