The back of my truck bounces when I brake. It's not real bad like the back wheels are coming off the ground or anything like that. It dosen't do it every time and sometimes it's not as bad as other times. Sometimes it dosen't do it at all. Does it have disc or drum on the back? Thanks

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98 F-150 4.2 Supercab,Longbed,Pacific Green
Leer cap
Kenwood KDC 515s cd player
F-150 online sticker
OMI fender trim
Mobil 1 oil
bug shield

 

Too light in the rear with no cargo. Mine does the same with either OEM shocks or new Gabriels.

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My Ride: 1998 F150 4x4 Lariat Supercab Flareside 5.4L in Oxford White/gold, ORP, Tow Package, 3.55 Gears.

Modifications: K&N FIPK, Stepshield door sill protectors, Performance Accesories 3" body lift, Lift Lips, Gabriel Gas Ryder LT VST Shocks and Daystar front anti-sway bar polyurethane bushings.

Photos at: http://www.communicomgroup.com/jmtruck

 

Do you get a pulsating pedal? Mine bounced pretty bad until I installed new rotors. the old ones were warped!

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Supercrew 4x4 Lariat
Solid Black
5.4 Triton
3.55 Limited Slip
6750# GVWR Package
Skid Plates
Moon Roof
Sliding Rear Window
Trailer Tow - Class III
Cargo Cage
Grey Leather Captains Chairs
6-Disc CD Changer

Mods:
305/70/16 ATS, AR Atlas 16x8
Chrome Westin Steps

Planned: Dual Exhaust, Toneau Cover and Expedition Console Mod.

Another great Ford truck site -www.fseries.com

Truck Pictures

 

No,the pedal desen't pulsate. I think it has drum brakes on the back but I'm not sure. Most of the time I don't have much weight in the back but I do pull a camper and I didn't notice the hop then. Thanks

 

Not bouncing when pulling the camper because the camper's weight helps stabilize the light weight rear end of the truck.

But it is not a bad idea to check the rear shocks and other rear suspension components for excessive wear and tear that contributes to poor handling.

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My Ride: 1998 F150 4x4 Lariat Supercab Flareside 5.4L in Oxford White/gold, ORP, Tow Package, 3.55 Gears.

Modifications: K&N FIPK, Stepshield door sill protectors, Performance Accesories 3" body lift, Lift Lips, Gabriel Gas Ryder LT VST Shocks, Daystar front anti-sway bar polyurethane bushings and 35x12.5R16.5LT BFG All Terrain KO's on 16.5x9.75 American Eagle 589's.

Photos at: http://www.communicomgroup.com/jmtruck

 

My '97 bounced very badly until I replaced the front rotors. Don't ask me why but that sucker would bounce your molars out until I replaced the rotors up front.

[This message has been edited by kkirt1 (edited 11-18-2000).]

 

Thanks for the help guys. I've got acouple of little things to be checked out be before the warranty runs out and that will be one.

 

Either replace or turn the front rotors. I know it doesn't make sense...but it works.

 

Longtruck, you have rear drum brakes.

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'98 F150 S/C 5.4 V8 4x2, Aggie maroon, spindle lift, blocks and leafs, Rancho RSX shocks, Airaid filter system, Pro Comp 305/70/16, AR Baja 16x8, Dynomax duals, and some other stuff

 

Thanks TexasAG. Thats what I though but I wasn't sure. I walked passed an F-150 the other day and it had disc brakes on the back. Must of been a conversion.

 

mine does the same thing.

it is the rotors.
they are warpped just like everyone elses which we sould all go to Ford about this and try and have them recalled.

its BS. this shouldnt happen.

the rotors warp and when you try to stop the rotors and pads cant grab right to stop the vehicke. (grab and release grab and release grab and release)

 

If you don't feel pedal pulsation when it's bouncing it's probably NOT the rotors.
You might want to follow JMTruck's advice and check for worn components in the rear before replacing front rotors.

 

I think I'm going to take it in. It's still under warranty. I'll have them check the brakes and the dome light that stays on way too long. I just did a search on that and it sounds like a switch. Thanks!