Hissing brake pedal etc | Ford Explorer - Ford Ranger Forums - Serious Explorations

  • Register Today It's free! This box and some ads will disappear once registered!

Hissing brake pedal etc

xplorernewb

Well-Known Member
Joined
May 6, 2014
Messages
165
Reaction score
1
City, State
washington state
Year, Model & Trim Level
91 ford explorer sport
My 93 explorer recently had a series of vacuum leaks and im having trouble finding the last one i think.

Brake pedal hisses when applied. Pedal is kinda soft and takes about 4 pumps to get it stiff when the car is off but still hisses when its as stiff as it will get, which i can still move the pedal a little when the hissing occurs. Idle also rises when i pump the pedal repeatedly at a complete stop. High idle 1,000rpm with new iac plugged in and hangs at 1800 between gears or until ive stopped completely. idle stays at 1100 when new iac is unplugged.Also ive noticed the pedal is stiff sometimes when i first get in it, without pressing the pedal to give it actual pressure with my foot. Bad brake booster maybe?
 
<



FR-425

Used to be a road here.
Elite Explorer
Joined
November 21, 2013
Messages
2,661
Reaction score
110
City, State
Phoenix, AZ.
Year, Model & Trim Level
1994 Explorer Limited
Yep. bad booster.
 
<



xplorernewb

Well-Known Member
Joined
May 6, 2014
Messages
165
Reaction score
1
City, State
washington state
Year, Model & Trim Level
91 ford explorer sport
Replaced booster and rebooted the computer, no change
 
<



Top