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Home >> Cadillac >> 1988 >> Seville Base >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> DFI ECM Tests W/Codes >> ECM Code EO65 - Cruise Control/Coolant Temperature Too High >> DFI ECM Tests W/Codes >> Notes On Intermittents
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Notes On Intermittents

If an intermittent code EO65 is stored, manipulate coolant sensor wiring while observing ECM data ED04 (coolant temperature). If parameter jumps to a high reading (greater than 126°C), repair fault in wiring or connections.

Fig 1: Cruise Control/Coolant Temperature To High
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