2001 Grand Marguis heater core replacement

robertsgt40

My 2001 needs a heater core replacement(leaks bad) I replaced it 2yrs ago and it's rotted out again. Is there a certain anti-freeze to use to prevent corrosion? I also am considering useing distilled water for 50/50 blend. Any thoughts???

joesmith2

My sister and I both had 96 GMs, and we both had to replace the heater core. But we never had to replace it again. We just used the "pre-mix" anti-freeze. I don't know why you would have gotten a bad core. Does it have the stock thermostat? Maybe a higher thermostat could decrease the heater core lifespan? I'm grasping at straws, but I don't think your replacement heater core should have failed after 2 years.

greenthumb1

The air bag light is flashing 5 times then 1 time. What does this mean?

greenthumb1

1993 Mercury with 120K miles has poor acceleration [sputters] at take off for the first 1/2 mile then smooths out. Also sluggish after warmed up at start up on hot days >85 degree. The check engine light comes on intermittently after engine is warmed and on a load. I have changed the fuel filter, EGR valve, plugs and wires, air temp sensor, water temp sensor with no improvement. What could be the problem?

euphonium

Adjacent to the air filter is a sensor. I believe it is called "Mass Airflow Sensor". It can be cleaned, but if you're going to keep the car, change it.

greenthumb1

Thanks for the suggestion. I cleaned the Mass Airflow Sensor with electronic connection cleaner and it corrected the problem.
thanks euphonium

euphonium

Good for you & I'm glad it worked.

jlazz

Did you find out what causes flashing blinking light 5x's then 1 time ???

jlazz

What causes 5 blinking lights then followed by on repeatly?