# Service bulletin ONP95B77

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 46460
- Published by NHTSA: 1996\-04\-25
- Manufacturer's number: ONP95B77
- Manufacturer's date: 1995\-12\-01
- NHTSA component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE \(EGR VALVE\)

## NHTSA's summary

CERTAIN 1989 MODEL TEMPO \& TOPAZ CARS EQUIPPED W/ 2.3L HSC ENGINES BUILT FROM 5/31/89 AT KANSAS CITY \& 6/22/89 AT OAKVILLE THROUGH THE END OF THE 1989 MODEL YEAR AND ALL 1990 THROUGH 1994 TEMPO \& TOPAZ CARS EQUIPPED WITH 2.3L HSC ENGINES THAT ARE CURRENTLY REGISTERED IN THE FOLLOWING STATES: AK, MT, ND, MN, WI, MI \(UPPER PENINSULA\), NY, ME, VT, NH. THE POSITIVE CRANKCASE VENTILATION \(PCV\) SYSTEM MAY FREEZE CAUSING THE CRANKCASE TO PRESSURIZE WHICH COULD FORCE OIL OUT OF THE CRANKCASE THROUGH THE DIPSTICK TUBE OR PAST SOME OTHER GASKET OR SEAL OF THE ENGINE.

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Engine, Exhaust and emissions, EGR valve

## Vehicles listed

- 1989 to 1994 FORD TEMPO
- 1989 to 1994 MERCURY TOPAZ

JSON: [/v1/bulletins/46460](/v1/bulletins/46460)

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