Question about 2001 Chevrolet Monte Carlo
My 2001 monte carlo ls 3.4 keeps overheating. within the last 6 weeks i have replaced upper and lower radiator hoses, thermostat (put a 180 in it to run cooler) water pump, fans (and hardwired them to a switch, always have them on when engine running) and new radiator cap. I took it to a radiator shop yesterday and they told me it was the intake manifold gasket. ok cool so i replace it. this morning i go to get some gas and within 3 miles it keeps spiking. i have no coolant in my oil, thus i think the head gasket is good. i replaced daggum near everything i could think of short of the radiator itself. i live in south florida so nothing is frozen or needs to be thawed. someone please help. im running out of ideas, and money
Is it truly overheating? Could be a bad sensor or gauge.
Posted on Dec 24, 2014
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Posted on Jan 02, 2017
SOURCE: Oil in over coolant tank
since you are running green coolant in a car designed for dexcool that may have contributed to a leaky intake gasket and/or head gasket. dexcool was specially formulated to run in the GM vehicles because the gaskets and seals can be easily distorted when the wrong chemicals are soaking them. oil in the coolant is usually either a head gasket or the lower intake manifold leaking into the cooling system. also if the intake gaskets werent done properly that would cause oil in the coolant as well. i suggest you take your car to a reputable shop and have it tested for a headgasket leak and to have the lower intake inspected.
Posted on Feb 17, 2009
DID YOU BLEED THE COOLING SYSTEM.THIS VECHICLE WHEN YOU REMOVE MOST OF THE COOLANT TO REPLACE WATER PUMP OR RADIATOR AND THERMOSTAT YOU HAVE TO BLEED OUT THE AIR TO GET COOLANT TO CIRCULATE PROPERLY. TO BLEED COOLANT SYSTEM WITH ENGINE COOL LOCATE BLEEDER SCREW AT WATER PUMP BY HOSE OPEN BLEEDER SCREW A LITTLE TO LET SOME AIR OUT WHILE YOU.POUR ANTIFREEZE IN RADIATOR.WHEN RADIATOR COOLANT LEVEL STOP DROPPING CLOSE BLEEDER SCREW AT WATER PUMP BYPASS HOSE.START ENGINE LET IDLE UNTIL GET WARM AND COOLANT DROPS IN RADIATOR ADD MORE COOLANT.WHEN COOLANT START RISING AT RADIATOR.PUT CAP ON RADIATOR LET VECHICLE IDLE A LITTLE AT A TIME.UNTIL THERMOSTAT OPENS THEN YOU CAN WAIT A LITTLE WHILE TAKE A LARGE RAG OVER RADIATOR CAP OPEN A LITTLE YOU WILL HEAR AIR STEAM HISS THROUGH CAP BUT DONT OPEN ALL THE WAY.WHEN HISSING STOP SLOWLY OPEN RADIATOR CAP A LITTLE AT A TIME SO YOU WONT GET SCALDED.YOU CRANK ENGINE UP A LITTLE STOP WAIT A WHILE BEFORE OPEN RADIATOR CAP.KEEP DOING THIS PROCEDURE UNTIL RADIATOR COOLANT STOP DROPPING.WHEN COOLANT STOP DROPPING.BLEEDING COOLANT SYSTEM COMPLETE.IF VECHICLE KEEP OVER HEATING CHECK OIL CRANK CASE LOOK LIKE MILK SHAKE YOU HAVE A BLOWN HEAD GASKET.
Posted on Dec 03, 2010
You have to bleed the air out of the system. There are 1 maybe 2 bleeders on the front of the engine on the cooling system bypass pipe one near the upper hose the the othe on the drivers side of the pipe. They are brass with a small bleeder valve in the middle. Get the car up to temperature and take your time to allow all the air out. Refill cooling system after it cools. Hope you didn't do any damage running it hot.
Posted on Dec 27, 2013
Testimonial: "I did bleed the system and its the same thing. is it possible to have a bad head gasket without having coolant in the oil?"
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