joy: i noticed a number of posts sugesting that the coolant #2 sensor may be at fault. not likely, but symptom of easy cold start and subsequent difficulty starting warm/hot could be explained by disconnected #2 sensor. essentially, the resistance of the sensor tells the computer the temperature: in ohms, roughly 250 operating temp, 2000 room temp, several thousand below freezing. so the ecu treats a disconnected sensor, infinity ohms, as reporting very cold temps, and she starts just fine cold, but not, subsequently, hot. badly corroded sensor/connector contacts, or a broken wire, might produce similar symptoms. checking for voltage at the connector, and measuring sensor resistances at various temps, is very easy with a multi-meter. dan |
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