Also there is no water in the oil. If you don't see this the water pump may be faulty, a broken impeller perhaps. I recently flushed my radiator myself and got rid of the Dexcool and all traces of it that was there and replaced it with green coolant. My car is at the point where is it overheating and will not perform. Tried it again the following morning still no problems. If I disconnect the temperature sensor, both fans come on immediately.
If not then you most probably haven't got a blown head gasket. When you replaced the water pump did you replace the timing belt either time? As the problems seem to ease up and thinking that I've got the problems under control, about 18,000 miles later, the car starts to overheat on my wife. Anyway, this elbow is a common failure problem and usually leaks slowly at first. Again I really apraciate everyones advice. So I would suggest inspecting and or replacing the radiator cap, and overflow hoses to keep the air out.
Was the thermostat professionally installed? This is not an awnser but i have had 7 chevys with the same problem. It's located directly across from the air filter assembly. I'm trying to prevent the costly trip to the dealership. Change the thermostat and this should take care of the problem. The thermostat that I replaced about a month ago, was defective. Hi, I have a 99 Grand Prix with about 70,000 miles that is overheating, blows cold air.
The car still wants to climb to the red. Check the oil fill cap and dipstick for a milky deposite. Usually those fans always have electric and the sensor acts as a ground when they engage. Your coolant reservoir or overflow container is how you fill the radiator. Does anyone have any thoughts on what it could be? Unfortunately, I didn't figure it out until after going through the time and expense of changing head gaskets. But would the system being stopped up, cause it to get air in the system? First off It is a 3.
Or any other troubleshooting I should do? Feb 03, 2012 Hello, kevans222 and thank you for asking your question on Fixya! At noon it started overheating again. My car overheated on the highway this morning. I have given you some things to investigate but to really help you with an answer I must ask for a little more information with all the parts you say you have replaced in a 6 month period of time. The one good thing out of this, I have found repair shop that will repair my car much less than what I have read here. Get more great money saving tips and tricks about your vehicle from: Thanks for the vote, and good luck! Is there any white residue in the oil or on the oil cap? In the end I fixed it with a gallon of water. All brand new parts and my 1999 pontiac grand am 6cyl still over heats bad. I don't think that's the problem.
I am at my wits end as to what to check next. Jan 29, 2014 Make sure radiator is full and that all hoses are ok. Your reservoir overflow plastic container has a pressure release cap on it which releases pressure. I wired each fan directly to the battery, both function correctly. Take the radiator cap off with the radiator full and gun the engine while it's still cool.
I have seen numerous vehicles overheat because of a blown head gasket, or other gaskets in the engine for that matter. I guess nothing's impossible, though! I think that the temp sensor is located where the upper hose goes into the engine but not entirely sure of this There are 4 relays in the engine fuse block for the fans according to this Scroll down to engine block fuse panel. If you dont have any clue what ur doin, one thing you could check is if your fan is working properly when the engine warms up. I've only had the car for maybe 6-8 months and it's getting to the point of having to fill it up any time I stop anywhere. What kind of mileage is on the car? Thx Ripn, and Knucklebuster for your replys.
Is the radiator clogged up with sediment? Update This question seems to be attracting a lot of views, so I guess a lot of people are having the same problem. Do you notice any leaking coolant? There was a bigger problem with overheating with this car, even after the fans were running correctly. I need to bleed my system. I have never seen a more stupid design. These terms are used for identification only. Should I start by changing the thermostat? Both fans kick on with a good amount of breeze. There are two bleed off valves located that need to be losened until all the air is removed from system.
Word of advice: Avoid all 3. This lead me to suspect the fans, so I tested the fans themselves independent dual electric cooling fans. I used a circular wire brush attached to my drill to remove the corrosion from the back plate. Either the fan s are bad or the sensor that controls them is. Not the answer you're looking for? You need to get the water pump replaced, because the coolant is not circulating that is why the radiator stays cold even though the engine is overheating. One thing I did find out was that there have been numerous people locally that have dealt with this same problem on the early model 3.