Volvo XC70 This wagon/SUV crossover offers the capabilities of an SUV without SUV size.

Popping next to engine caused by abs?

Old 06-17-2019, 02:12 PM
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Join Date: Jun 2019
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Default Popping next to engine caused by abs?

Volvo XC70, ABS light is on and it pops under the hood next to the serpentine belt, when I took it to a garage the said the sensors are working fine and turned the ABS light off and it stopped popping, i went over a brick layed road so it was very bumpy with a lot of vibration and the ABS light came back on and itís started popping again under the hood, what could this be? The sensors are not loose as I have checked
Old 06-17-2019, 02:28 PM
Join Date: Mar 2012
Location: Ridgefield, CT
Posts: 4,793

the abs system has a controller board with solder joints that tend to crack and that in turn controls the solenoids in the ABS valve body which pulsate to regulate the fluid pressure to the wheels. You can try unplugging the abs board to see if the popping stops. Do you feel anything in the brake pedal? You can google around for services that will rebuild your ABS controller ($250 or so).
Old 06-18-2019, 12:32 AM
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Default air leak found also

I have noticed there is an air leak somewhere in my system or a knackered air pump, could this affect the abs into clicking from the hood? I havenít checked the module yet and will need to do it when I have some more time but Thankyou for the reply, on normal roads the brakes seem all good itís just when Iím on bumpy roads I get a hard pedal and feels like The brake pedal is scraping on the concrete, I know it isnít itís just the only way to describe it, I canít avoid the bumpy road either as I live on it
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