Yes I know the search button works, and I did use it. I just wanted to get your guys idea on what my situation, I have a neon that overheats but it takes like 30-45 mins to overheat and its only when I come toa stop. If I stop with in the 30-45 mins it wont try to overheat, but I had a water pump put on(the Tech. was a Dodge tech and he did the chemical test for the headgasket and that wasn't it so he thought it could be the water pump) and it still overheats. Well I read that it could be either, a coolant temp sensor, fan relay, air in the system(which I think it is, not sure because it gargles after I shut it off), or the radiator itself(which where is the cheapest place to buy one). Well now after 30-45 mins it just started to go up to a higher temp, like 3/4 the way up but didn't go down or up and I am pretty sure the fans are on too. Thanks in advances, I am gonna try and see if I can get any air out of the radiator today, and switch relays with the fuel pump. I forgot to mention that I also replaced the radiator cap, and the thermostat.

 

Sounds almost like an air lock between your coolent overflow container and the filler neck. seriously I had a overflow conatiner that loved to leak and when it didn't leak it had air lock.

yer not gonna last 30-45minutes on a bad water pump. When motor is cold remove the filler cap on the filler neck just off the top of the motor and start your car up with it off! next start adding coolent till it appears to be full and wait a few minutes till it gets to operating temp where the thermostat will open and see if it needs to ingest more coolent.

step 2 get a new over flow container and/or check your overflow hose for leaks.

 

I didn't even think about that. Thanks. But I did take off my over flow tank and I don't think itself could be leaking, but the hose could be I will check that out in a second too.

 

Ah yes I remember another thing that I read from here. Some guy said that his car was overheating because the ground wire by the radiator was not hooked up(?) and I was wondering why that was and what his symptoms were.

 

Alright, I went out there and I tried to get the air out of the system, and it worked for a little while until it started to just bubble up and start spitting out the coolant. So I stop the engine, and it spit out almost all the coolant, so I tried again and it did the same thing, so I stop it and did it again but this time before it looked like it was going to I put on the radiator cap. Well my question is, is that suppose to happen?

Then I looked over the overflow and the line and I don't think they are getting air in my system. But my next question is, how long before the fan should kick on just at idle? My fan didn't kick on once the whole time I was messing with it, and it was a normal temp. and I turned on the A/C(which is suppose to kick on the fan?). Then my next question, people say to switch the relays of the fuel pump and the fan, but what is the relay name for the fan?(The one that says something about A/C?)

Any suggestions or any information would be helpful, and would be appreciated. Thank you.

 

My boyfriends' 99 Eclipse did that. We replaced the Water Pump, Thermostat, Radiator Hose, Overflow Tank, Flushed the Radiator, Got All the Air Out of the System and various other things. It turned out to be the Head Gasket. It would run great, after about 30 mins it would overheat. Especially when going real slow or being at a dead stop. But my Neon, when the Head Gasket went, just started smoking due to all the oil leaking out. It never overheated or leaked prior to it blowing. The only pre-cursor to finding out it blowed was the oil light. It stayed on for like 4 weeks before the Head Gasket blew. Last week my Neon started overheating too, you may have seen my thread somewhere, it turned out to be the Cooling Fan Temperature Switch. The fans would turn on, but not when they really needed to be on. About the Coolant Temp. Sensor, I wouldnt think it would be that unless its putting out a code or your temp. gauge isnt working. It's only $20 at Autozone though, so it wouldnt hurt to try and replace it. On the 'gargling' sound...is it your coolant bubbling back into your overflow tank after it got hot? The coolant spewing out is normal I think, mine did that when I was getting the air out of my system and mine doesnt overheat anymore. I tested it on the Interstate [&:]. I would suggest having a mechanic run a compression test on your car to rule out the Head Gasket. I dont know what the chemical test is but if it has something to do with detecting oil in your antifreeze or vice versa, when my Head Gasket blew both were clean. Anyways, hope this helps. Seriously think about the compression test though, just to make sure its not the Head Gasket.

 

Any one else? Knowledge would help me right about now. Thanks.

And thanks xenonneon, I am just hoping it isn't the head gasket.

And can anyone answer when the fans should kick on if I am idling, and what relays do I switch?

 

I just need to know when the fans will kick on at idle so I can mark that off the list, and finish trouble shooting this car so I can enjoy it. It felt alright around turns, besides me not use to 5 speed and turns together yet.

And would the most liable suspect be the Coolant Temp Sensor? Or so I try to hard wire the relay first(but first someone would have to explain how I do that)?