Question about Cars & Trucks
Hello you might want to look at the brake booster first. also confirm that the brakes have been bled.
Posted on Nov 28, 2019
Change the master cylinder on your booster. had the same problem with early 90's ford ranger. The pistons inside the master cylinder are probably worn...... Make sure to bench bleed the new master cylinder....
Posted on May 19, 2009
Possible causes for this check engine light code include:
Blown oxygen sensor fuse
Open circuit in oxygen sensor harness
Open circuit internal to oxygen sensor
Open circuit in PCM
Short circuit in oxygen sensor harness
Short circuit internal to oxygen sensor
Short circuit internal to PCM
If you find this helpful, please rate me, thank you.
Posted on Jun 04, 2009
you have two problems here, your master cylinder has a leaking seal, the low pedal is resault, the power brake booster rubber diaphram is damaged and leaking from the brake fluid that is getting into it from the master cylinder, these are sold as a unit that has been rebuilt.
Posted on Sep 28, 2009
Testimonial: "Thank You for your response. However there is a new twist that I posted."
Sounds like you still have air in the system.
Also may need to adjust rear brakes so they don't have to travel as far to contact drums. They are supposed to self adjust as the brake linings wear down but most cars do not do this as well as they are supposed to.
Posted on Nov 08, 2009
SOURCE: brake pedal has alot of
The air seeping is a dead giveaway. Your power brakes are now manual brakes, but stiffer. The diaphram in the brake booster has torn and the hissing noise is the engine vacuum escaping (you hear it louder when you depress the pedal right?). Replace the booster and you will be fine. The brake lights probably don't work because you can't push the pedal down far enought to release the switch. Please rate. Thanks.
Posted on Sep 03, 2011
Testimonial: "I am grateful for your help.I was told so by a mechanic that it was brake booster diaphram or abs pump.pedal has so much pressure and hissing."
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