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Hey guys.
Got a brake problem.(99 Dodge Ram 1500) After the vehicle sits for awhile, say overnight, when I first jump in it and use the brakes, they want to lock up on me. Normally after I used the brakes 2 or 3 times, the brakes work fine… that is until the truck sits for awhile and then the problem repeats when I hop back in. Brake pedal feels fine when problem is occurring. No indicator light. Truck has ABS but only on the rear.
1 Year ago replaced – pad, rotors, shoes, drums, bled system.
4 months ago had brake system flushed.Problem seemed to just pop up over night.
Doing some research, I’m thinking possibly the proportioning valve or booster or master cylinder. How do I check these systems for failures? Other thoughts?
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You could have a problem with flash rust. It happens especially on some aftermarket brake parts, especially in humid areas.
More information on that here.
http://www.ericthecarguy.com/faq/solving-brake-problems
Good luck and keep us posted on what you find.
Thanks Eric.
The other day I took off driving after it had rained, and when I applied the brakes, it sounded and felt like the rear driver-side wheel locked up momentarily. So yesterday I tore into that drum and this is what I found upon really close inspection.
Everything inside the drum, including the drum itself looked great and it should, as the parts are only a year old. However,it appeared that at the top of the front facing shoe, where the metal part of the shoe made contact with the backing plate, that one contact point looked different, it looked dirty, and almost even rusty looking. Pulling on the parking brake cable, it seemed that the shoe was catching on that one spot. So I cleaned it up slapped some anti-sieze on there and put it back together. Drove the truck this morning with no issues, I will keep monitoring it for now.
After watching one of the brake videos, I’m thinking the shoe may have worn a groove into the backing plate overtime, and it catching there and I’m getting that sudden braking when there is enough pressure to push that shoe beyond that contact point and make contact with the drum.
The rear brake backing plate pads can be sanded or filed smooth, if not when the lubricate wears off, the brake will catch again.
I suspect you’re right.
I think that is why it has taken so long for this problem to show up.
I lubed all the contacts points when I did the brakes last time around, and I think as it wore off it started acting up. I plan on sanding it down, now that I suspect that was what caused the problem to begin with.
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