Help with 3.4L Coolant change
#11
Why are you guys draining the block? Seems like a lot of risk of damage. I mean yes you want your coolant clean but the most important part of coolant maintenance is to keep the radiator flowing good and to cancel out and acidic build up. With Age coolant becomes and acid. A coolant flush will have a base in it to neutralize the acid.
If you change your coolant every 3-4 years then you just put the flush in and 2 days later drain and replace your coolant. I did not watch the whole thing but this video seems on point if you are getting a car that has not been maintained.
https://www.youtube.com/watch?v=s--5ft5YiHg
If you change your coolant every 3-4 years then you just put the flush in and 2 days later drain and replace your coolant. I did not watch the whole thing but this video seems on point if you are getting a car that has not been maintained.
https://www.youtube.com/watch?v=s--5ft5YiHg
What damage can be caused by draining the block? It does say to do it that way in the Haynes manual.
#12
Join Date: Nov 2007
Location: Eastern PA,
Posts: 10,465
If you are having trouble getting to the sensor you could easily damage it while removing it. If your coolant is that bad then the thermostat would be a good investment. Like I said I did not watch the whole video but flushing without the thermostat in there is going to be the best option. Better then draining the block.
#13
I am in the same boat as you. I think I have located the knock sensor, but it seems impossible to get to. (The plug for the driver's side is just past the oil filter.) Every time I try to do a complete coolant flush, I end up just giving up on getting it all out of the block. I would love to know how to actually get the thing out though.
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