GM's Engine Problems, Solved with easy Fix

Guys

I think I know why GM is having all kinds of problems regarding blown head and intake gaskets, blown piston rings and engine leaks. I believe it's due to the lack of engine air circulation. The cooling fan fans don't typically come on till the engine cooling fluid reaches at least 220 degrees by that time the external parts such as the exhaust manifolds, cylinders, intake manifolds are simply cooking away or warping under the extreme heat. To solve this problem "before it happens to my engine" I installed a wiring harness that forces the rad fans to run all the time and since that installation my rad temp is dead-on and my engine has never run better. Some times the simplest fix is the best. later

The real reason for the higher temps are emission related. The higher temperatures result in a cleaner burn of fuel, hydrocarbons, etc. If you allow your engine to run too cool, it will actually result in less MPG, more wear on the engine, and a shorter lifespan. The breakage of intake manifolds, and other plastic components is simply the result of inadequate R&D, and computer modeling, in my opinion. I have been in the automobile business for 30+ years, and I remember when we used to do a lot more real world durability testing of components before we released parts. Nowdays, we use a lot of computer generated models to predict component life, as opposed to actually trying out the components on vehicles. The problem with models is that they are only as good as the people's imagination that create them. It is sort of like my wife says, "there ain't nothing like experience!":icon16:

Nice response my point was : I did not mess with the internal engine temp. such as the stat that is still at 198. I still belive by not having air circulate in the engine compartment is frying all of the parts. Bottom line I will keep the fans running. later

I don't have a problem with that, but I'd be willing to bet that the cost of the new fans you have to buy will go a long way towards other replacement parts!

Well in regards to the UIM its the exhaust gases from the EGR port that do the melting because the walls in that particular area are too thin. The fans coming on would have no effect on that.

Also, despite what some would say, Dex-Cool can do some weird crap, Ive seen it with my own eyes, in my hands, it has a reputation for eating gaskets, and I wont defend it. So the fans wouldnt really help with that either.

Yes, your engine will perform better at lower temperatures, but you will also loose fuel economy because youll be running a richer mix. You might not notice the difference, but im sure its there a little. You would probably only notice a large difference if you dropped down to like a 160 T-stat or something.
I wont knock you for modding your fans, in fact Id like to do it myself sometime, but youre also putting a large strain on your electrical system, and as said earlier, the fans themselves.

Ive still never seen many GM engines with blown head gaskets and blown piston rings, if they are its probably related to a lack of maintenance in some other area.

yes, your right about the heat from the EGR going into UIM. but the biggest risk is the EGR burning through to the coolant port that bends around the EGR. (only about .050-.100" of material there) and this will cause coolant to be sucked in the UIM and eventually into the cylinders, and then hydralocking your pistons when they try to compess, but cant with liquid in the cylinders.

yes, your right about the heat from the EGR going into UIM. but the biggest risk is the EGR burning through to the coolant port that bends around the EGR. (only about .050-.100" of material there) and this will cause coolant to be sucked in the UIM and eventually into the cylinders, and then hydralocking your pistons when they try to compess, but cant with liquid in the cylinders.


Well in regards to the UIM its the exhaust gases from the EGR port that do the melting because the walls in that particular area are too thin. The fans coming on would have no effect on that.

Exactly. Thats why the APN version of the replacement manifold comes with a metal sleeve for that area, theres also a ***Edited Out by Moderator*** member that takes OEM manifolds broken or not, and inserts a metal sleeve into them then resells them at a lower price, theyve been dubbed "Buttermore" intakes, since thats his last name.

Another good UIM aftermarket kit is the Dorman brand. The Dorman UIM kit comes with a modified EGR stovepipe and all gaskets. One advantage to the aftermarket APN brand is the EGR stovepipe is a smaller diameter which may or may not make a difference.

My two cents worth. Keeping the cooling fans on all the time is ridiculous and is not a real fix or remedy. :2cents:

The further north you go, the less common the UIM failure is. Here in southern ontario we get hot weather in the summer months, but we dont offen get the extreme hot temps like the southern states...so it tends to be less of a problem