Tonyrodz's Tahoe Build Thread

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

OP
OP
Tonyrodz

Tonyrodz

Resident Resident
Joined
Feb 16, 2012
Posts
31,703
Reaction score
47,426
Location
Central Jersey
Wahhapend?
Fuel injector was pi$$ing gas through the grill onto the road. Weird.
i think most of us expect to see a ford on a tow truck. lol
Can't argue with that--Although--my most reliable car is my Crown Vic. Figure that $hit out. I had a leaking brake line that pi$$Ed out all the fluid for the front brakes--and I drove it like that for a few weeks lol. And I didn't even know!
 
OP
OP
Tonyrodz

Tonyrodz

Resident Resident
Joined
Feb 16, 2012
Posts
31,703
Reaction score
47,426
Location
Central Jersey
I need opinions--Driving home from work last night, while stopped at a light my brake pedal slowly went down lower then it should've. Driving it progressively got worse. I changed the master cylinder 2 years ago this month. Changed using an AC Delco part. Do you guys think it sound like the mc again? There's no leaks coming from anywhere, although the mc is a tad low on fluid? My question is could it be the booster instead of the mc? How to differentiate between the 2? TIA.
 

strutaeng

Full Access Member
Joined
Aug 10, 2023
Posts
1,271
Reaction score
2,754
Location
Dallas, Texas
I need opinions--Driving home from work last night, while stopped at a light my brake pedal slowly went down lower then it should've. Driving it progressively got worse. I changed the master cylinder 2 years ago this month. Changed using an AC Delco part. Do you guys think it sound like the mc again? There's no leaks coming from anywhere, although the mc is a tad low on fluid? My question is could it be the booster instead of the mc? How to differentiate between the 2? TIA.
Did you notice the level of the brake fluid dropped? Like, was the level ever higher?


Maybe you are only losing fluid if you are driving and braking harder? Have a helper pump the brakes while you look around underneath and at each wheel.

I only had those symptoms on a hydroboost system on my old OBS (brake pedal went to the floor while at a stoplight)...turned out the p.s. pump snapped the shaft. All brake AND steering assist were both lost. Not fun.

I believe if the diaphragm on the vacuum booster fails you get a lean condition on the engine, no?
 
OP
OP
Tonyrodz

Tonyrodz

Resident Resident
Joined
Feb 16, 2012
Posts
31,703
Reaction score
47,426
Location
Central Jersey
Did you notice the level of the brake fluid dropped? Like, was the level ever higher?


Maybe you are only losing fluid if you are driving and braking harder? Have a helper pump the brakes while you look around underneath and at each wheel.

I only had those symptoms on a hydroboost system on my old OBS (brake pedal went to the floor while at a stoplight)...turned out the p.s. pump snapped the shaft. All brake AND steering assist were both lost. Not fun.

I believe if the diaphragm on the vacuum booster fails you get a lean condition on the engine, no?
I'll check this weekend. The fluid was only low a "hair". Not much. Behind the wheels looked dry.
If a bad booster causes a lean condition I'd be happy--I'd know which was bad lol. I started to notice the pedal getting lower when I was stopped at a red light, before that there wasn't any hard braking.
 

strutaeng

Full Access Member
Joined
Aug 10, 2023
Posts
1,271
Reaction score
2,754
Location
Dallas, Texas
I'll check this weekend. The fluid was only low a "hair". Not much. Behind the wheels looked dry.
If a bad booster causes a lean condition I'd be happy--I'd know which was bad lol. I started to notice the pedal getting lower when I was stopped at a red light, before that there wasn't any hard braking.
Have you considered a hydroboost swap?

Probably a bad sales pitch after my last post. LoL

And not sure what could be your issue yet, so you may not care about that as much as fixing the issue?
 

Forum statistics

Threads
132,719
Posts
1,873,149
Members
97,546
Latest member
Steven94
Top