# NHTSA Engineering Analysis EA91040
> **VACUUM BOOSTR VALVE FAILS** · Opened 1991-10-03 · Closed 1992-08-17
## Investigation
- **Action number:** EA91040
- **Type:** Engineering Analysis
- **Open date:** 1991-10-03
- **Close date:** 1992-08-17
- **Manufacturer:** Ford Motor Company
- **Affected makes:** FORD
- **Affected components:** SERVICE BRAKES, HYDRAULIC
- **Affected model years:** 1991
- **Affected (make, year) variants:** 1
## Summary

There is no summary currently available

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=EA91040)
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