TM  9-2320-387-24-l COOLING   SYSTEM I KNOWN    INFO I NONE 1    POSSIBLE     PROBLEMS 1 TEMPERATURE GAUGE TEMPERATURE SENDER ENGINE    COOLING SYSTEM OIL   COOLING     SYSTEMS SERPENTINE BELT CONTROL     VALVE KNOWN    INFO TEMPERATURE GAUGe IS  BELOW   240°F   (116°C) AT  ALL   TIMES. POSSIBLE     PROBLEMS 1 TEMPERATURE GAUGE TEMPERATURE SENDER ENGINE    COOLING    SYSTEM OIL  COOLING     SYSTEMS SERPENTlNE BELT CONTROL    VALVE KNOWN    INFO I-EMPERATURE GAUGE SEEMS    TO  WORK  OK POSSIBLE     PROBLEMS -EMPERATIJRE     GAUGE ‘EMPERATURE SENDER ENGINE  COOLING    SYSTEh XL  COOLING    SYSTEMS SERPENTINE    BELT :ONTROL    VALVE 2-62 I S THE  ENGINE  TEMPERATURE ;AUGE   BELOW  FULL  SCALE  AT ALL TIMES? DIAGNOSTIC    FLOWCHART r  OPTIONS LOOK. REASON    FOR   QUESTION The  engine   should    not  reach temperatures     over   240°F   (116%). DOES  THE  TEMPERATURE    GAUGE READ  BELOW  120°F  (49°C)  WHEN THE  ENGINE   IS COLD  AND  THEN INDICATE   HIGHER  TEMPERATURES AS THE  ENGINE  WARMS? r OPTIONS VISUAL REASON    FOR   QUESTION You  want  to  know   if the gauge   is working    properly. INSTRUMENTS, .- I I DOES  THE  ENGINE   APPEAR  TO  BE I PROPERLY   COOLED   WITH  NO I EVIDENCE   OF  OVERHEATING? OPTIONS LOOK. REASON    FOR   QUESTION If the  engine   is  overtreating with   the  temperature gauge below   full  scale,     both   the ENGINE   COOLING, Page   2-159   AND   THEN INSTRUMENTS, temperature     sending    system and  the  engine   cooling    are faulty.