Started running hot and showing hot on the guage. Cooling fan seemed to run erratic. Speeds up, slows down. Have done the following:
- flush and replace coolant
- changed the pressure cap
- changed the thermostat w OEM
- checked the coolant fan temp sending unit. Should read 1480 - 1580 ohms at
176 degrees. Got to 1480 ohms at 180 degrees. Used a meat thermometer so I figure that's close enough to a pass. (Could explain the rare roast last week)- when I jump the terminals the fan runs beautifully and steady at what looks like the 1100 rpm it's supposed to.
- use of a/c seems to kick up the fan rpm as it should.
- no trouble w power steering and no foam in the reservoir.
Never overheats at high speeds so I'm thinking I'm down to the Coolant Fan ECU under the glove box. Any thoughts??? Thanks a lot