# NHTSA Preliminary Evaluation PE89044
> **HEATER HOSE MISROUTING** · Opened 1989-02-17 · Closed 1989-04-19
## Investigation
- **Action number:** PE89044
- **Type:** Preliminary Evaluation
- **Open date:** 1989-02-17
- **Close date:** 1989-04-19
- **Manufacturer:** Ford Motor Company
- **Affected makes:** FORD
- **Affected components:** VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
- **Affected model years:** 1983, 1984, 1985, 1986, 1987
- **Affected (make, year) variants:** 5
## Summary

SUMMARY:CHAMPION HAS FURNISHED HEATER HOSE ROUTING DIAGRAMS WHICHCLEARLY SHOW THAT THE ONLY HEATER HOSE ROUTING EVER USED BY CHAMPIONROUTES THE HOSES FROM THE HEATER, ACROSS THE ENGINE COMPARTMENT NEAR THERADIATOR, AND DOWN TO THE DRIVERS SIDE FRAME RAIL THE SIDE MOST REMOTEFROM THE EXHAUST SYSTEM, AND REARWARD ALONG THIS FRAME RAIL TO THE REAROF THE VEHICLE.THIS ROUTING IS THE ROUTING PREFERRED AND MOST HIGHLYRECOMMENDED BY FORD.===

## Source
- [NHTSA ODI investigation page](https://www-odi.nhtsa.dot.gov/owners/SearchResults?searchType=ID&targetCategory=I&searchCriteria.nhtsa_ids=PE89044)
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