2019 Ford Transit 250/38k miles. Driving through the mountains, got 3 brake vacuum booster fault messages.
Hi,
I have a 2019 Ford Transit 250 with only 38000 miles. Driving through the mountains at near freezing temperatures, I got 3 messages indicating a brake vacuum booster fault. Did not set the check engine light. On two occasions, the brakes seemed normal. One time the brake pedal felt hard,
almost "crunchy". After pressing through the crunch, the message went away and the pedal felt normal again.
The brake reservoir is full and does not seem to be losing any fluid. The vacuum booster seems to hold vacuum fine with the engine off. The vacuum hoses look like new with no apparent cracks or defects.
Any ideas?
Thank you
Status:
Open Mar 13, 2024 - 01:47 PM
Ford
2answers
Answers
Apr 22, 2024 - 05:58 PM
Hi there,
Based on all the details you have mentioned, the possible problem could be a bad vacuum booster check valve, a vacuum leak, or a faulty brake vacuum booster.
1. A bad check valve may allow leakage. The check valve ensures vacuum pressure stays within the booster and does not leak back to the engine intake. It results in reducing the booster's effectiveness and also results in "crunchy" brakes, as you have explained.
2. A small hole on a brake booster hose will drop the pressure needed for the brake booster to function properly, causing warning messages and a hard brake pedal.
3. If the brake booster is malfunctioning, it leads to a faulty diaphragm or internal wear.
Please consult your trusted auto repair shop for proper diagnostic and troubleshooting repair as the best option. I hope this helps!
Oct 04, 2024 - 04:05 PM
Hi there,
That was a good countermeasure braken. Appreciate the feedback that the issue is somehow resolved.
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