bellarmine33 I’ve been froze every morning. Summer time. Death defying heat no ac

Venturi2012 If you take a look at a jug of Prestone's "all makes /all models" universal coolant and their version of Dex-Cool you'll notice both coolant formula's consist of ethylene glycol (107-21-1), diethylene glycol (111-46-6) sodium 2-ethyl hexanoate (19766-89-3), sodium neodecanoate (31548-27-3) while exceeding or meeting ASTM D3306 and D4985. If you contact Prestone and ask about the similarities, they won't deny or confirm that the two coolants are the same or different. At least they didn't when I called a year or two ago.

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no harm. probably that's the easiest way. I usually just open it up and let it dump, blow a little away from the gasket seat, and clean it up and bolt it together.

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Great

Most forums online seem to be unanimous that due to common overheating issues, 180 tends to perform better in the 3800 series 2

GM recommends the 195 because they want you in a GM certified shop getting it fixed when the 195 goes bad

Unless you have a 190° fail-safe thermostat --- its designed to lock in the open position when overheating occurs due to a failing cooling system component. This allows maximum coolant flow, thus preventing expensive engine damage. -- it's like $15

@@jacobjenkins7768 Not in mine, the 180* thermostat I just removed caused all sorts of issues as the temp never got up over 140*. I had codes for all sorts of stuff, and issues with the transmission shifting properly. Kept getting the dreaded P1811 code, along with numerous EVAP codes. I replaced your 180* thermostat with the ACDelco OEM 195* thermostat, and all of my codes vanished. Oh, I also have real heat now.

I had an intake manifold leak about 8 years ago and the mechanic that did the repair said that the orange dexcool is corrosive to some components in the 2003 Pontiac Bonneville (including the original intake manifold seal). He flushed the whole system and replaced the dexcool with the regular (green) antifreeze.

I can hear and understand him just fine. I have more of a problem with loud mouths.

If you can, try adding narration in editing. Much easier than trying to talk and work.

Or turn up your volume

Or do it yourself and you wouldn't have to listen to him talk. Duh

@@YourLordTheSavior lol

It's gonna keep the engine cooler

NiNeRs fo life Question: Is keeping your engine “cool” in the winter a priority, when you want strong heat? Just asking.

@@YOUZTUBE2000 180 degree is perfect it's gonna kick in before the engine gets to hot and your meter finger will be sitting lower! Normal gas engines run at 210 degrees and never run into issues but if your thermostat goes bad it's just easier to take it down a notch! If you're in -30 weather all the time that 180 will still work

Flush or drain when needed. You need to feel the heater hoses and determine if one, or both are hot when the engine is up to temperature. that will tell you if coolant is flowing. If not, it's clogged. If they're both hot and still no heat, look into a blend door issue.

john hawley j

The increments have no real value to them. I've looked side by side with a scan tool to determine where my gauge falls for that area.

+Venturi2012 I agree with you that a calibrated tool will be more accurate then a dash gauge however, in your video you were referring to the dash gauge. Now because I had previously gone down that road I mentioned it. I did not mean to criticize your video, which was quite helpful.

+marco arteaga Dex-cool can be harmful. Using universal is better imo.

+Nikki P if you aren't careful if that's an aluminum block the green coolant is going to eat through that block as well as the radiator and if it wasn't flushed properly to where the dex cool is mixed with the green coolant it increases corrosion of the aluminum.

+Clayton Folk the 3800 is a cast iron engine, but still I've seen Dex cool eat right through aluminum, all the time actually. It's no better. It's common for it to eat through the lower intake manifold, happened to my 06 grand Prix with Dex cool. Flushed it and used universal.

Not on the 3 litre gm v6s

The rubber seal is the “gasket”.

It is a gasket.look at it before he puf it back smh

yes

The catalytic converter is likely clogged and needs replacement, after driving for a while at night check under the car and see if the catalytic converter is glowing red. You can also pull the upper o2 sensor and run it temporarily and see if it runs better.

+Matt Bennett The first time was in the bleeder screw on the top of the thermostat housing, 7mm.

Torque to 15 foot pounds...

Some are like that. You press down and turn. Mine isn't like that, it is a plastic cap. GM. Buick. 2008 lacrosse. If I close it too tight Sometimes, mine sticks. Have had to use a "C" clamp/ vise grips

possible blown head gasket. Not enough coolant in the radiator caused by a leak someplace in the system or just low on coolent

a thermostat stuck closed will also cause it to overheat. To check for a blown head gasket open coolant box and smell if it smells like gas its blown, or if there is oil in it its blown, next check the tips of the spark plugs if they are fouled it can be an indication it is blown and will let you know what cylinder to focus on, or check the radiator if it has oil in it it is blown last check the oil if it is creamy it is blown. If all that checks out next get a compression test done on each cylinder. Usually if your over heating you want to start little first and work your way up. Check coolant levels, check hoses for leaks, change thermostat and CTS (in GM cars this sends a 5 volt reference to the ECM to turn on the fan if its bad the fan don't come on), change water pump (this causes over heating if it is old and worn), Turn A/C on max to confirm fan works if not replace fan, finally start looking into a head gasket kit if you can't find it. more than likely thats the problem but it's not common for these engines. Also a cracked head will mimic a blown H/G. And the LIM and UIM gaskets are known to leak on this engine if its a Series II which can mimic a H/G failure as well. Look into that as well as new Heater Hose elbows they crack and leak coolant. Last do not run it into the red. That will kill the engine. If you do have a blown H/G get it repaired ASAP because if you don't what happens is usually a bearing is spun and you can kiss the whole engine good bye because it will probably cause it to seize which then would require either a new engine or rebuilding your old one.

If you had service done to your cooling system where coolant was drained and refilled, air needs to be bled from the cooling system, otherwise air can get trapped and cause a blockage of coolant which can cause overheating.....There is a bleeder valve located on the thermostat housing on GM 3800 engines for this purpose. This is demonstrated in the video. If your coolant level is full, and your water pump and accessory belt is working properly, but you suddenly get only cold air out of the heater/defroster vents, and your temp gauge is spiking, air in the cooling system can be one possible cause.

no!! it damages your system stick with gm dex cool

+marco arteaga You are full of it. If you don't know what you're talking about, don't bother responding.

anjetgrinding

You can use dexcool or the green some people had bad experiences with dexcool so they flushed the system and replaced it with the green

There's universal coolant that's green.

Mizzfunny same

Mizzfunny thermostat that is stuck closed would be my first guess. replace it and bleed the system. if that doesnt fix it you may have a worn out water pump or a clogged radiator. you could also have a blown headgasket allowing exhuast gases to get into the coolant system. dont ever use the stopleak, it wont fix anything and will clog systems.

do intake gaskets first before you blow the heads.

You need to check your coolant level and condition.

Venturi 2012 it was my heater core

Brenda Alejandro what was causing the overheating?

Venturi2012 the coolant spilled inside the car so the car didn't have coolant I didn't realize until I looked at my passenger side carpet it was all wet

Brenda Alejandro oh it was leaking, usually you notice a heater core leak way before your engine overheats.

I have synthetic 10-30 in the can. It's whats leftover from the 5 quart jug, the 3800 only takes 4.5 quarts.

Look in the waterpump outlet neck.

+Gamal Mothersil I wish you would explain which of the hose has the thermostat inside the housing, the top or bottom hose connection on the engine.

He showed you which hose hosed the thermostat, lol, it's the top one!

Erickson J absolutely not.

If it has the little valve in it, yes.