I also suffer from this. The pulsing can be felt in the way the truck stops
but no pulsing is felt in the brake pedal as you would expect from a warped
rotor or drum. This condition seems to come and go but is more prevalent on
hot days. It can usually be felt below around 40mph on easy to moderate
stops. I have tried to rule out engine and tranny issues by slipping it
into
neutral when I feel this but the pulsing has continued leading me more
toward brakes/wheels/tires. I have tried to rule out engine though by zip
tying all vacuum lines and have even replaced the IAS plunger. I was
leaning
towards Bruce's line if thought about vacuum leaks/pulses or something
goofy
causing my torque converter to lock/unlock but the pulses follow the tire
RPM's too closely. Besides, as I said, I can sometimes feel it coasting to
a
stop in neutral. I have found a couple of things trying to troubleshoot
this
over the last few months:
1. Rubber plug on vacuum port on right side of manifold loose and not
sealing.
2. Air leaks between the base of my K&N air hat and F&B throttle body.
3. Throttle valve adj. taken waayyyyy too far out. Shifted too soon,
wouldn't kick down when depressing the accelerator, locking up torque
converter way early. Have adjusted back per Dodge manual, much happier now.
All in all, truck is running great now. The computer shows me getting
around
15.5 to 16 MPG in town and 16 to 17 MPG highway (75-80mph w/AC on). I guess
I can't complain too much (V-8/auto/4x4).
The only problem is this intermittent pulse in the brakes. Maybe the rotors
ARE slightly warped and I only feel it when they 'line up' together? Still,
I would expect to feel the pulse in my brake pedal. Next oil change, I'll
have the tires rotated, balanced and front end aligned. Will let you know
if
this makes any difference.
Mike G.
'99 CC SLT+ V-8/Auto/4x4
K&N Gen II (wrapped with insulation and heat reflective tape)
Accel cap/rotor/super coil
MSD 8.5 wires
F&B TB
Gibson 3" single cat-back
Jet Stage II
<Bruce B wrote:>
> Seems like its more of a engine controls issue than warped rotors. My
truck
> does a bit of a stutter when stopping slowly. Feels more like a converter
> lock up or FI control situation though... So far its been 40K miles and
its
> still the same... Brakes have been fine (once I replaced the stock
pads...)_
> Bruce Bridges
> 98 DAR/TCC
<In response to:>
> >>Ok guy's what's the skinny on these brakes.
> > >
> > > I notice after they get warm the get really grabby and tend to feel
like
> > >the
> > > front rotor is warped. But don't feel it when brakes are cool or at
high
> > > speed braking.
> > >
> > > If they were warped I'd expect to feel that "chug chug" felling in the
> > > brakes all the time.
> > >
> > > I rode in a 96 RAM once and I notice that same feeling even as a
> > >passenger.
> > > I thought his rotors where warped. But now I'm wondering is this a
dodge
> > > truck thing?
> > >
> > > Should I get harder pads for the front?
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:02:14 EDT