Got air in your heater core? Need help getting rid of it?

[BlazerLT]

Originally Posted by ChrisGood

I think what blazee is saying is, dont try to be smart not here, you wont win.

Go Blazee, I couldnt have said it better myself, thankfully theres wikipedia

Who is being smart?

[blazee]

Originally Posted by BlazerLT

Who is being smart?

I think that he was talking about rksnc's post and my response to it.

Originally Posted by ChrisGood

I think what blazee is saying is, dont try to be smart not here, you wont win.

Go Blazee, I couldnt have said it better myself, thankfully theres wikipedia

He doesn't have to "try" to be smart, he "is". I've read a lot of his posts and know for a fact that the man knows his shit. All the facts that he posted were true. He was simply questioning some things that didn't seem to make sense. So, I tried to explain it in a little more detail, because the information in a lot of other posts on this subject is a little general, and not very specific.

[rksnc]

And I agree. With all the facts that are out there, the bottom line comes to, how well you maintain your cooling system. Yes what I was reading in other replies was so much about air in the system. And my point is air is a part of water which is require in the coolant system. While I have a shop and work on theses cars every day I don't always understand all the agruments on the subject. But I can say without a doubt, a properly maintain cooling system will bless you with less problems. I am sure iron in water varys from town to town. Other elements in the water will vary too. But everyone can maintain there cooling systems and prevent problems just the same way you would change your oil. It is not that I am trying to be smart,I just think people forgot what the first question was all about and got off topic kinda.

[rider68]

LT, I just read an 04 post about replacing the radiator cap to solve the sloshing noise and did that, but it didn't do anything... actually it may even be noisier. I also flushed the system and replaced the thermistat because it's a 96 I bought used and has 130K miles on it now and I want to preserve the cooling system if I can. Anyway, my real question is.... how sure of a thing is this thread about parking on a hill and basically bleeding the air out of the heater core by having the air flow to the highest point?

Originally Posted by BlazerLT

Perfectly said.

[BlazerLT]

Best to use ramps and get a good difference in height.

Allw the engine to warm up with the rad cap off and keep the rpms around 2000 so the air can be forced out.

[534BC]

Thanks to those who posted about air being in the system. I had a sloshing noise and never knew what it was. I had a cracked radiator, but never put the two together. filled it full and noise is gone. Ok to my question.

Does it matter which way the coolant flows thru the heater core? thanks

[Scarred Knuckles]

Originally Posted by dmbrisket 51

ok, as i said in post number 9 i beleve, the green stuff has a different base from the Dex cool, the green likes to eat away at that plastic rubber intake gasket, and you will eat through the seal with green... and to get brown sludge in a Dex system, your 97 was not taken well care of, Dex cool sludges up when it is mixed with oxygen and exposed to heat (will do it in just oxy. but the heat speeds the process up) keep a good rad. cap (factory ones are shitty) on the dex cool and keep it toped off and you will have no problems with it

I too replaced dex-cool with the green stuff in my 96 blazer, and now have a leaking intake manifold. Should I go back to dex-cool (which I hate) or specify a green anti-freeze friendly gasket? It has a 130K miles on it, should I replace the CPI, while I'm at it?

[rksnc]

After 130k I would not be suprised at the leak. Replace gasket, you will find the gasket failure and be able to see what happens to them over time. As for the antifreeze put what ever you want. Change it every year and keep mixture correct with water and antifreeze. I would not change CPI until the time comes that it is needed. And yes they do have better gaskets sets available theses days, wouldn't hurt to ask.

[briley1207]

Ok. I'm new at this so forgive me, I found this thread closest to my problem, I have a 94 S-10 Blazer that needs the heater core replaced, need to know how to take the dash out to get to the heater core...can you help please???

[Xcrewchief]

Geez, after reading the initial couple of posts (as I have heard the 'sloshing' noise, I decided to read the rest......whew.....chemistry...lol......
Thanks for the tip. I live in WV, so I know there just might be a hill I can park on

[JoulesWinfield]

Well even though this thread is over two years old.......

I simply used a floor jack to lift the front of my truck and it worked just fine. Still use the same method whenever I open the coolant system.

[Vito_1502]

Originally Posted by deadeye

Ummm, how do I keep the engine at 1500-2000rpms and watch the coolant level at the same time?

A penny placed between the throttle stop bolt and throttle plate linkage will set it at about 1200rpm

[rprough]

I know this is late but I am gona throw my two cents in. The reason air is the bad guy in a cooling system is that air pockets are areas in the system where there is no coolant next to bare metal and thus less heat transfer and higher engine temps. Of course this also accelerates corrosion due to introducing air into the chemical equation. Correct me if I am wrong, just my thoughts.

[prudence12]

Originally Posted by BlazerLT

No, you can't do that seeing you will need both hands and you will need to hold it open for 10-15 minutes sometimes.

I suggest a piece of wood under the gas pedal to keep it open and constant.

Hmmm... try to get someone to help you? The piece of wood is a good push!