Brake pedal hard to push after turning (3 Viewers)

Joined
Apr 10, 2021
Messages
14
Location
Layton, UT
I have had this problem before with my last 80 but it was years ago. After making a turn its hard to push the brake and stop then goes back to normal. Thinking its either the brake booster or master cylinder, they both look like they have been replaced already. Any input helps thanks
 
Joined
Jan 14, 2017
Messages
422
Location
Wakulla FLA
Ive burned through two boosters but not with notable difference in the pedal and turning. Im resigned to know a hard pedal is just another faulty booster.
 
Joined
Apr 10, 2021
Messages
14
Location
Layton, UT
Had the same issue with my last one seems to happen after turning for whatever reason, the lines look clear of it. Line replacement is probably a good idea either way and I will see if its the fix. From what I have read it points to vacuum but yeah not sure why turning would factor in
 
Joined
Jan 1, 2003
Messages
1,397
Location
Depends on what time of year.
Any update here? I ran into this twice yesterday, quick slap of the shifter into N and regained pressure to the booster. Peddle becomes extremely hard but only monetarily, both times when slowing and turning, once R and once forward. I inspected the vacuum line and it was cracked at the manifold so i replaced. Will test today.

Currently we are near Placervile and its hotter than a Hoochi coochi... Could excessive heat have an impact? Its surface of the sun type of heat. Not sure how you people do this. :)
 
Joined
Jan 1, 2003
Messages
1,397
Location
Depends on what time of year.
@Blewseal Appreciate the feedback. Turns out "Intermittent" is now complete failure. Its fun driving that fat bastard on mechanical breaks!! It still stops, but it gatta be planned.

ALL CALL... If there is anyone near Plymouth Cali with a spare break booster for FJ80 ill pay delivery gas and a bottle of nice bourbon for the part. I can be reached at 715-410-0614 Beer is cold and I got ice for the bourbon. Any help is appreciated. Bourbon is going fast!!
 

cvenom96

SILVER Star
Joined
Sep 14, 2015
Messages
347
Location
Frederick, MD
I actually had this happen when I was on the trail ride Friday. Wasn't doing anything crazy. First time it's ever happened but, the truck has 316k on it and it's probably the first time it's ever been pushed that hard. Replacement booster is ordered.
 

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