99 4Runner - Pulsates when braking
- Thread starter birchy
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greyghost4x4
New member
Thats what I would assume.
Evan
Evan
Sloan said:
Yeah exactly. Definitely not as noticeable at slow speeds. Actually I first noticed it when braking while going down a fairly steep grade.
I'm assuming replacing the brake rotors is not super hard to do? Can an average guy with some know-how do it, or are there any special tools involved?
Clemsonfan15
New member
My '98 does the same thing. How much do brake rotors cost?
Rock Slide
Senior Member
birchy said:
try doing a search either here or on yotatech.com. Plenty of informtion on this upgrade.
As to your truck pulsating when braking...like others have said, the problem is more than likely caused by the rotors. My 4Runner developed the same sensation you are describing when braking about 2wks ago. It felt like pushing a grocery buggy with one wobbly wheel. Other than braking, my 4Runner drove fine.
As for my issue, I knew it could not be my brakes b/c I just upgraded to the tundras, so I took my 4Runner down to a local tire shop and had them look at it. They confirmed my brakes were fine, and confirmed the problem to be caused by my left rear tire. The tech said it's the same feeling he feels when a tire is on the verge of seperating. He spun the tire on the machine and you could see the wobble in it. So he swapped my spare on and the now my 4Runner drives fine. It sucks b/c I bought these tires new and they have only 14K miles on them as we speak. I have already odered a new tire and will return the defective tire this weekend.
I just thought I'd tell you all this to say, it is not always bad rotors that can cause your truck to pulsate when stopping. As I have just learned, sometimes a bad tire can cause it too.
If you want to know for sure if it's your rotors or not that need replacing, take it to a tire or brake shop and have them confirm it with you. Could save you some money from having to replace parts that are not needed. And to think, I was only one click away from ordering new rotors myself...
Oh and if in fact you need new rotors, just replace them yourself. They are extremely easy. Just unbolt the caliper and they come right off. Swap the new ones in and just rebolt the caliper on.
Sloan
New member
birchy said:
yea thats how mine started to, my girlfriend lives right off the highway so when i take the exit that goes to her house, it goes down a long and steep hill and its terrible.
http://www.yotatech.com/f2/tundra-brake-upgrade-pc-d-my-calipers-high-gloss-red-133294/
maybe rocks link will help you out some on what parts you need for the upgrade
uluafishing
New member
If you can change your tires, you can change your rotors.
The front rotors on our '97 warped at 60k miles...I replaced them with the Powerslots @ $110 ea.
Take off the front tire, remove the two bolts which hold the caliper in place, slide the caliper off the rotor, the rotor should come right off. Be careful and resist the temptation to sqeeze the pads/compress the calipers pistons...try to keep them in the same position as when you took them off the rotor (in other words, don't increase the distance between the pads by forcing the pads apart).
I replaced the OEM pads w/Hawk pads since I had the calipers off.
Assuming everything else is in good shape, you won't need to rebuild the calipers (new seals, etc.)...if you do, things get a little more complex, as you'll now need to bleed the brakes, etc.
The front rotors on our '97 warped at 60k miles...I replaced them with the Powerslots @ $110 ea.
Take off the front tire, remove the two bolts which hold the caliper in place, slide the caliper off the rotor, the rotor should come right off. Be careful and resist the temptation to sqeeze the pads/compress the calipers pistons...try to keep them in the same position as when you took them off the rotor (in other words, don't increase the distance between the pads by forcing the pads apart).
I replaced the OEM pads w/Hawk pads since I had the calipers off.
Assuming everything else is in good shape, you won't need to rebuild the calipers (new seals, etc.)...if you do, things get a little more complex, as you'll now need to bleed the brakes, etc.
