Question about 1994 Chevrolet C1500

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1994 chevrolet silverado keeps overheating

I recently replaced both head gaskets and had the heads rebuilt and inspected due to the owner overheating engine on a cold morning. I changed the thermostat prior to startup (sring side toward block) and truck began to run hot again.I removed water pump and inspected impeller which appears fine. I also ran without thermostat and engine runs cold (about 80 degrees).I noticed the radiator was pretty gunked up inside could this be my problem. The thermostat will not open when engine temp reaches 180 degrees and upper hose is cold.I also tested thermostat in pan of hot water and it does open and close.

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You really need to get the Radiator Rodded and Dipped or replace it Entirely. This is your Overheating Problem. You do not have Enough coolant Flow to Cool the Motor at this Point. BlueDevilRay guy is a Total Idiot!

Posted on Jan 19, 2009

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Reffer to owners manual

Posted on Jan 19, 2009


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Car overheating and mixing water with oil

You have blown the head gasket. Also, you may have warped the head if it's aluminum which will happen due to ignoring the issue of overheating...which eventually caused the "blown head gasket". So, it sounds like you have 2 issues to resolve. 1) Why was it tending to overheat? Stuck thermostat, water pump issue or??? 2) Repairing the cylinder head or replacing it if warped badly, if your lucky it's just a blown head gasket. Allowing a overheating vehicle to be in service without solving that the overheating can lead to MANY other expensive problems.

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Keeps Blowing head gaskets

You need to strip the engine down and check the top of the block (deck) for cracks and have it resurfaced, Do the same for the cylinder heads, check them for vcracks and have them resurfaced. Use felpro gaskets.

Apr 08, 2017 | 2003 Chevrolet Malibu

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2004 Cavalier broken rocker arms after head gasket repair.

Rocker arm issues are common in that car. They can happen without any reason. This is not going to be cheap to look at. When the head was repaired it had to be removed. The timing chain might not have been properly tensioned. That would cause the timing chain to slip and then you have pistons slapping valves and spark plugs. This cause rocker arms and pushrods to bend or break and also can damage pistons.

May 03, 2017 | 2004 Chevrolet Cavalier

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How do i fix the low oil pressure issue im having. When i drive, the temp stays normal at 210 but when i idle, it goes up to 260. I was told the oil pressure is low and i needed a new engine

Your engine is overheating, which isn't directly related to oil pressure. I would take the S10 to a reputable/trusted mechanic and have him perform the following tests.
Compression Test Leak Down Test Coolant System Pressure Test Inspect Oil for Moisture (you can do this one, remove the dipstick, does the oil on it look like milk? If it looks like milk it means there is water/coolant in the oil, a sign of a blown head gasket. However not all head gaskets dump coolant into the oil when they blow) Inspect Clutch Fan for proper operation
The mechanic will know what those mean, It sounds like your head gaskets may be blown, which is why the engine would be overheating. Also if the Clutch Fan isn't working properly, it won't pull enough air through the radiator to keep the engine cool at an idle or while sitting still.
If the Head Gaskets are blown, it doesn't necessarily mean you need a new engine.
One other thing to note, when an engine overheats, the oil breaks down and no longer works as good as it used to.

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Why does it continue to over heat even after changingth cylinder head gaskets?

Overheating can be caused by a few different things such as the fans not going on, the thermostat being stuck closed, or blockages in the engine due to deposits (which can be resolved by flushing the cooling system).

If the head gasket was changed this could indicate that the engine overheated due to another problem that caused this.

Oct 05, 2010 | 1994 Lexus Es 300

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Smoke is coming out of the car but its not overheating so what's the problem?

what does this smoke smell like? oil? coolant?, if it smells like coolant then u have a leaking head gasket, not all head gasket leaks cause overheating, so the fact the engine is not overheating doesn't mean you don't have a head gasket leak.

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I hate to say it, but it definitely sounds like you have a blown head gasket. Overheating and white colored, "sweet" smelling smoke are both telltale signs of this. If it started overheating first and the white smoke came after, then you will need to have your cooling system inspected after the head gasket is replaced.

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sounds like head gaskets or a cracked head check oil for water

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I replaced my whole engine foe $500.00 with a 90 day warranty from junk yard motor ran great and it only had 40,000 miles on it do not wast your time with just the head if you plan to keep the car . good luck

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