MoneyDecisions101
Brings you information and methods to help improve your financial future.

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MoneyDecisions101 => Ford Taurus overheating fix

1997 Ford Taurus 3.0 Vulcan V6 overheating boil over fix

97 Ford Taurus with 3.0 Vulcan engine would not seem to run hot on the gauge, but after running the AC, when the car was turned off, the coolant would boil over (and out) the plastic coolant reservoir (de-gas tank).

No oil was in the coolant, no coolant was in the oil, and no steam was in the exhaust.

Attempted fixes:
1) Replaced Plastic Reservoir & cap
2) Replaced thermostat twice (with 192F and then with 180F thermostat)
3) Removed both cooling fans and cleaned radiator and condensor fins
4) Flushed radiator and heater core forward and backward (absolutely no rust, sludge, or debris came out). I have always kept the coolant changed.
5) Checked ODBC for trouble codes. NONE found.
6) Replaced 3.0 Vulcan V6 water pump. I was surprised... the original pump had absolutely no impeller failure/rust/erosion! It looked brand new inside!
7) Replaced Coolant Temperature Sensor (two wire sensor)

8) FINALLY... Replaced the CCRM (Constant Control Relay Module). Replacing the CCRM fixed the overheating problem!

If your 97 Ford Taurus 3.0 Vulcan v6 is overheating or boiling over after you turn the engine off and you cannot figure out the cause, you may need to change the CCRM!

The CCRM contains relays for the two cooling fans, the AC clutch, the fuel pump, and communicates to the PCM (Powertrain Control Module).

The CCRM is located beside the battery under the hood. It is held in with a metal strap and has a single 3/16 hex head bolt securing the wiring harness plugin.
It will have "F6SF-12B577-AA" on the sticker, coded "R".
1997 Ford Taurus CCRM

You can purchase a replacement CCRM online or go to a junkyard.

Just remember that the letter code on the new CCRM must match your original. My original CCRM had a letter "R" on it.

Hopefully, this information will save you time and money.

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