Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

> No brakes!, Brake pedal went to the floor
mburkhart
post Sep 8 2020, 08:44 AM
Post #1


Member
**

Group: Members
Posts: 113
Joined: 3-July 05
From: Chester, MD
Member No.: 4,364
Region Association: MidAtlantic Region



So I was out for a cruise around the neighborhood the other day and things were going great until the brake pedal went to the floor. I was able to pump it a few times and restore pressure and crawled home in a low gear. Each time I used the brakes the pedal would go to the floor until I pumped it a few times. Scary!

Once home I looked under the car and inspected the soft lines at each caliper but they looked fine and no leaks. The brake fluid reservoir is still full. I'm not sure where the problem is.

What should I be looking for?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
Reply to this topicStart new topic
Replies
billh1963
post Sep 9 2020, 09:02 AM
Post #2


Car Hoarder!
****

Group: Members
Posts: 3,433
Joined: 28-March 11
From: North Carolina
Member No.: 12,871
Region Association: South East States



I'll throw out another possibility....

One day while while driving the 6 conversion in my avatar, I came up to a stop and much to my chagrin I discovered I had virtually no brakes. Fortunately, my emergency brakes worked quite well and I was able to stop. (BTW...when driving my older cars I ALWAYS slow down early and give the brakes a little test tap. It's a habit I developed early in life when driving another car that experienced brake failure.)

Anyway, as I sat waiting over an hour for a AAA tow for some reason I hit the brake pedal. I had brakes! I drove the short distance home and as I walked around the car I could feel the heat coming off the right front wheel. The right front caliper was dragging so badly that the fluid was boiling ..causing a loss of braking. I replaced the rubber brake hoses (in case they were collapsed) and with a set of rebuilt calipers a few days later I was back in business!

That may not be your problem. But, worth a check especially if you aren't seeing any fluid loss.
User is online!Profile CardPM
Go to the top of the page
+Quote Post
mburkhart
post Sep 9 2020, 09:39 AM
Post #3


Member
**

Group: Members
Posts: 113
Joined: 3-July 05
From: Chester, MD
Member No.: 4,364
Region Association: MidAtlantic Region



QUOTE(billh1963 @ Sep 9 2020, 07:02 AM) *

I'll throw out another possibility....

One day while while driving the 6 conversion in my avatar, I came up to a stop and much to my chagrin I discovered I had virtually no brakes. Fortunately, my emergency brakes worked quite well and I was able to stop. (BTW...when driving my older cars I ALWAYS slow down early and give the brakes a little test tap. It's a habit I developed early in life when driving another car that experienced brake failure.)

Anyway, as I sat waiting over an hour for a AAA tow for some reason I hit the brake pedal. I had brakes! I drove the short distance home and as I walked around the car I could feel the heat coming off the right front wheel. The right front caliper was dragging so badly that the fluid was boiling ..causing a loss of braking. I replaced the rubber brake hoses (in case they were collapsed) and with a set of rebuilt calipers a few days later I was back in business!

That may not be your problem. But, worth a check especially if you aren't seeing any fluid loss.


Any idea how to check for this without going out for another scary drive? This sounds like a possibility since the brakes went out about 15 minutes into my leisurely drive. I checked the pedals for fluid yesterday and the brake pedal had pressure (and no fluid leaking)...
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
VaccaRabite
post Sep 9 2020, 09:46 AM
Post #4


En Garde!
**********

Group: Admin
Posts: 13,845
Joined: 15-December 03
From: Dallastown, PA
Member No.: 1,435
Region Association: MidAtlantic Region



QUOTE(mburkhart @ Sep 9 2020, 11:39 AM) *

QUOTE(billh1963 @ Sep 9 2020, 07:02 AM) *

I'll throw out another possibility....

Anyway, as I sat waiting over an hour for a AAA tow for some reason I hit the brake pedal. I had brakes! I drove the short distance home and as I walked around the car I could feel the heat coming off the right front wheel. The right front caliper was dragging so badly that the fluid was boiling ..causing a loss of braking. I replaced the rubber brake hoses (in case they were collapsed) and with a set of rebuilt calipers a few days later I was back in business!



Any idea how to check for this without going out for another scary drive? This sounds like a possibility since the brakes went out about 15 minutes into my leisurely drive. I checked the pedals for fluid yesterday and the brake pedal had pressure (and no fluid leaking)...


That one is easy.
Look at your pads and see if one pair is wearing WAY FASTER then the other. The four front pads should be similar, and the 4 rear pads should be similar. Also, if pads are stuck on the rotor, the rotor is probably also worn more too, if not scored and warped.

Zach
User is offlineProfile CardPM
Go to the top of the page
+Quote Post

Posts in this topic
mburkhart   No brakes!   Sep 8 2020, 08:44 AM
mepstein   Master cylinder Look for fluid under the pedal as...   Sep 8 2020, 08:47 AM
DRPHIL914   Master cylinder Look for fluid under the pedal a...   Sep 8 2020, 08:57 AM
mburkhart   I haven't had time to lift the car up to be ab...   Sep 8 2020, 09:03 AM
DRPHIL914   I haven't had time to lift the car up to be a...   Sep 8 2020, 11:19 AM
mburkhart   What are folks thoughts on the original 17mm vs 19...   Sep 8 2020, 02:05 PM
ClayPerrine   What are folks thoughts on the original 17mm vs 1...   Sep 8 2020, 05:33 PM
dcheek   What are folks thoughts on the original 17mm vs 1...   Sep 9 2020, 09:00 AM
fiacra   Master cylinder Look for fluid under the pedal a...   Sep 8 2020, 10:13 AM
brant   if the MC leaked on the pedals make sure you rebui...   Sep 8 2020, 09:14 AM
solex   When was the last time you replaced your brake flu...   Sep 8 2020, 09:32 AM
76-914   RE; the non-easy install MC version; You can get a...   Sep 8 2020, 02:57 PM
mepstein   Im pretty sure I have the 19mm easy install versio...   Sep 8 2020, 05:47 PM
Tdskip   Check me on this - the only difference between reg...   Sep 9 2020, 06:50 AM
mepstein   Check me on this - the only difference between re...   Sep 9 2020, 07:38 AM
DRPHIL914   Check me on this - the only difference between r...   Sep 9 2020, 08:32 AM
Optimusglen   When I did mine I installed on a bench, just the l...   Sep 9 2020, 08:41 AM
mepstein   Never forget the washers. They are 100% mandatory....   Sep 9 2020, 08:55 AM
billh1963   I'll throw out another possibility.... One da...   Sep 9 2020, 09:02 AM
mburkhart   I'll throw out another possibility.... One d...   Sep 9 2020, 09:39 AM
VaccaRabite   I'll throw out another possibility.... Anyw...   Sep 9 2020, 09:46 AM
stugray   I'll throw out another possibility.... One d...   Sep 13 2020, 10:29 AM
VaccaRabite   The difference between the 17mm and the 19mm is on...   Sep 9 2020, 09:35 AM
mepstein   Did you pull the carpet and the pedal plywood and ...   Sep 9 2020, 10:36 AM
mburkhart   Did you pull the carpet and the pedal plywood and...   Sep 9 2020, 11:51 AM
mepstein   Did you pull the carpet and the pedal plywood an...   Sep 9 2020, 12:33 PM
Craigers17   I did this a few months ago. I used this advice b...   Sep 9 2020, 01:47 PM
mburkhart   Well it looks like the caliper is the culprit. Br...   Sep 12 2020, 02:57 PM
bdstone914   @[url=http://www.914world.com/bbs2/index.php?showu...   Sep 12 2020, 06:50 PM
stugray   @[url=http://www.914world.com/bbs2/index.php?show...   Sep 13 2020, 10:32 AM
Mikey914   I know we are making more now and may be able to l...   Sep 12 2020, 09:49 PM
porschetub   As far as failure. If there are not any apparent l...   Sep 13 2020, 01:56 PM
sixnotfour   Old brake fluid increases the diagnoses..   Sep 13 2020, 12:52 PM


Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



- Lo-Fi Version Time is now: 11th April 2026 - 05:47 AM
...