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The reason the temp. gauge is going up and down is because it is low on coolant.
Now where it is leaking I don't know, but you can start by checking these few things.
First check the engine oil and see if it's over full or if the oil is white in color, If it is
then the intake manifold gaskets are leaking coolant into the oil. You will have to replace the intake gaskets and change the oil and filter a few times within 5 to 10 mins. of engine running time to clean engine up.
If the oil is okay when you check it and it's not white in color then it's not leaking into the engine and that's a good thing.
Then Fill radiator up, put cap on and start engine. Take your fingers and fill around
all 4 corners of the intake manifold where it bolts to the heads, or look at the corners real close to see if there is antifreeze leaking or a white resedu on the intake corners.
If there is then the intake is leaking and you will still have to replace gaskets on intake. THIS IS A REAL COMMON PROBLEM WITH YOUR ENGINE.
What else can I help you with?
Why is my engine overheating 2000 cadillac deville?
could be your thermostat or you have no antifreeze coolant or your water pump is going bad
Why would 2001 Tahoe need antifreeze once a week when system has been flushed and no leaks Only happens when heat is used not air conditioning?
Your either burning - head gasket going bad leaking - check all hoses, fittings lines, water pump boiling coolant away - check radiator cap, thermostat
Where does the thermostat go on a 91pontiac sunbird?
The thermostat is going to be located in the raditor. Use extreme caution when taking the raditor cap off to advoid burns from boiling antifreeze. Once the raditor cap is taken off you shuld see the thermostat. Just pull out to remove, or push hard to install.
What is wrong when both hoses going into heater core on a car is cold?
the heater core could be stopped up, or could be low of antifreeze, or the thermostat could be stuck open
Why does your car sound like it is drinking antifreeze and disappear when you put it in but it is not leaking on the ground?
If losing anti freeze but not visible leaking typically means bad head gasket. Antifreeze is leaking into combustion cylinder and therefore evaporating and going out exhaust pipe as steam.
Your 1998 olds cutlass appears to be losing antifreeze but there are no puddles or other obvious signs of where it's going What would antifreeze in the oil look like you just changed the over flow cap?
the oil would look gray if its gray the head gaskets busted
Replace thermostate on 1996 Nissan Pickup model XE?
drain some antifreeze,then remove end of top of radiator hose going into inake,remove thermostat cover,2 bolts hold it on.then remove thermostat and scrap old gasket off and apply sealant and new thermostat and tighten.u might want to check new thermostat to see if it opens at 180 derees.
Is Tahoe joe's going under?
Tahoe Joe's is not going under. Although its home company, Buffets Inc., declared bankruptcy for about a year. They are no longer bankrupt though, and neither is Tahoe Joe's. ITS DELICIOUS!
Why does heater go from hot to cold on 2001 civic also defroster not very good?
The thermostat may be sticking shut which would cause you to loose heat inside or you may just be low and antifreeze. Check your antifreeze level if it is full then get a new themostat and if that don't work your heater core may be going bad.
Is there going to be a recall on 1999 Chevy Tahoe steering shafts?
There are currently no recalls for the 99 Chevy Tahoe.
Is it safe to drive a vehicle that has oil going into the antifreeze?
NO! Take it to a mechanic immediately. Call AAA at once, if you are a member. Oil is not antifreeze and antifreeze is not oil!
What would cause a 2002 Tahoe to act like the transmission is going out?
The trans mission IS probably going out. This is a well know defect in the 2002 Tahoe. Google it.
