# NHTSA Preliminary Evaluation PE91091
> **REAR HEATER FIRES** · Opened 1991-06-25 · Closed 1991-10-31
## Investigation
- **Action number:** PE91091
- **Type:** Preliminary Evaluation
- **Open date:** 1991-06-25
- **Close date:** 1991-10-31
- **Manufacturer:** PEN YAN
- **Affected makes:** PEN YAN
- **Affected components:** VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
- **Affected model years:** 1989, 1990, 1991
- **Affected (make, year) variants:** 3
## 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=PE91091)
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