2nd Gen Non-Engine/Transmission pulsation on brake application

[FourBarR]

i had rear drums turned down , new one ton cylinders installed, front calipers removed, checked for seizing, new seals installed. new pins and bolts, every thing lubed , as per manual. front rotors turned , tires road force balanced. only occures 50%of the time on light brake application. there is some looseness in the idler arm . anyone had this problem on a 2wd. ?truck steers well on the road , does not pull on brake application. all the front end parts have been checked for wear , only idler arm shows wear. truck has 288000km. or 175000mi. help driving me crazy. :{

 

[gcorron]

Every time I've experienced this, it was due to a warped rotor. Changed rotors, all was well, but have not experienced this on the Dodge... ... . well this one anyway.



If you break hard and then hit a puddle of water, the cold splash does nasty things to them occasionally.



Did your mechanic check for runout, or just width? Most vehicles it's fairly cheap to change, but again, I haven't done this one.



I can let ya know in the spring - with 120k on the rotors, I figure it's a good maintenance item to change. Heck, maybe ya can let me know.

 

[BillGotthelf]

Two things I have found that cause pulsing in the brake pedal. First is the warped rotors and second is the antilock brake system. If the sensor is bad it acts like you have applied brakes to the lockup point and pulses them thinking its preventing lockup.

 

[RBallard]

I'll offer a piece of advice for warped rotors. I had warped rotors on my 96 Ram and the wifes 93 Ford Probe. I took the truck to get new tires and was talking to the technician replacing the tires and mentioned warped rotors. He stated that if the lugs aren't torqued the same, it stresses the rotors. He recommended using a torque wrench when tightening the lug nuts. On the way home I bought a torque wrench and re-torqued lug nuts on the probe. Believe it or not the rotors eventually (maybe 10k miles) pulled back to straight on both vehicles. I have since owned a 98 Ram 2500 with 65k miles, 97 Grand Prix GT with 40k miles, 01. 5 2500 with 71k (current) and 02 Durango RT with 20k miles and have never turned a rotor or experienced any vibration in the brakes.



Just my 2 cents,



Bob

 

[Hackamore]

I had that same problem and it turned out to be my drums. Tried a lot of other cures, new rotors, calipers, track bar repair, till I swapped wheels and drums with my brother and noticed It went away, to my brother's truck. I had the drums turned down, on the outside of the drum, to fit the newer alloy wheels. They probally didn't center them right when they cut them. Hope this helps. Fabian