What is it with the coolant system in these cars

[Lil larry]

My 97 and 05 do the same thing it runs cool till I com up my hill or hard throttle

[Fivefingerdeathpunch]

That doesnt help me any.

Have you done ANYTHING to figure it out??

Coolant flush, new water pump, new thermostat???

A sticking thermostat will make the heat up time take longer.

[Scottydoggs]

flush both heater cores. both are air bound.

[Lil larry]

I put everything in my 97 new including radiator but I haven't really done anything to my 05 but put it on the genesis at wor and it says is some type of malfunction

[Scottydoggs]

your not helping us help you. codes go a long way.

[Lil larry]

My 05 is doing the same thing as my 97 and I done everything short of a flush it the intakes are seeping in my 05 I don't want to take a chance and blow the gaskets out

[HighOctaneRacing]

Could you elaborate a little bit more about your issue? How long is the car running before it hits operating temp? The LIM gaskets need to be replaced asap. Also using periods and commas will help you out as well. Grammar goes a long way.

[Slick2500]

[Lil larry]

It runs at the 1/4 mark on the temp gauge and when I come up my hill the temp rises quick or under hard throttle

[ItHurtz]

potato by smetters20, on Flickr

[timboku]

Collapsing radiator hoses

[Turbocharged400sbc]

with the hills out there it could just be that your working the engine/trans hard and or you may be experiencing trans slippage which the trans cooler pumps the heat into the coolant via the radiator mounted H/E

[stealthee]

It runs at the 1/4 mark on the temp gauge and when I come up my hill the temp rises quick or under hard throttle

THe "1/4" mark on the later ones, at least on my 07 is about normal operating temp. When you get closer to the middle mark you are actually getting a little too warm.

[CrazyGuy03]

Trans is working hard on the hills . That really heats up the transmission. plus if you use AC , that's another heat load on the cooling system due to the placement of the condensor.
cleaning the radiator out , dust dirt leaves etc, helps as well as new radiator if dex has coated /plugged the radiator

[BillBoost37]

I'm thinking air in system.

[Lil larry]

I don't feel any slipping in the trans and I was afraid of that being too hot what can I do to eliminate this I don't want to hurt it I might just need to go ahead and do the intakes but I was wanting to do them when I got me a intercooler set up

[JasonandStacys04]

Time for radiator hoses, maybe heater hoses, 180 or 195F thermostat and a proper flush and fill with new DEX.

[JasonandStacys04]

If your intake gaskets are leaking outside the motor, they are also leaking into the cam valley under the intake manifold. I had them fail completely on my 1997 Lumina with the 3.1L This caused the engine oil to thin out, eventually locking up the motor. 3 gallons of 50/50 Dexcool with turn 4.5 quarts of 5W30 into a useless mess.