1G Overheat

[92laserboy]

well my car has been overheating but now we got the fans running all the time so that it doesn't overheat and this is the 92 Plymouth laser 1.8 liter motor. and the bottle that you put the coolant in when the car gets it starts bubbling back up so could i have a cracked head or head gasket and if so how could i tell if it is one of those and how much would they cost

i really need advice

 

[EagleTalon1993]

if you had to set the fans up to run all the time you lready had a problem doing that just masks the cause of the overheat and I can tell you from experience it will burn out the fan motors eventually.
Here's are some good things to check:
- Is your thermostat opening (usually so cheap I would just replace it) maybe with a160
- Check your cap for weak spring or bad gasket
- Start the engine with the cap off and when it gets to normal temp see if the coolant is flowing
- Do a leak down test to see if there are any leaks
- Last but not least by any means have the radiator cleaned/checked by a shop to make sure it isn't clogged or blocked (You could try a radiator flush from an auto parts store)

 

[tec_41]

I'm all too familiar with overheating issues...for me it started with a blown water pump, but that's easy to pinpoint usually since it will leave a nice puddle. Or at least it will spray into your engine bay/on the timing belt.

Next my thermostat went. As was already stated, just replace it since it's cheap and easy.

After that I had a bad heater hose that only leaked above 3-4k rpm. I was losing coolant for the longest time and I finally figured it out by revving the engine with the hood open. It was spraying right onto the headers and evaporating...so I would lose coolant, then run hot and have to add coolant.


Just a few things to check out, maybe share from my experiences

 

[DSM1G90]

I call it a blown HG .. not too expensive for a HG, but DON't go to "Autocrap" (Autozone..) to get one .. head to NAPA for a good HG.

-DSM

 

[92laserboy]

well the termostat is brand new and i have flushed the raditator twice and when it gets to normal temp the flow of coolant is very good and we have had the fans running for 3 months now and they are still going strong but what do yall thing is making the coolant in the coolant bottle bubble back up and be so hot and somebody said something about the raditor cap being bad?

 

[Lofer]

Id just do a headgasket, waterpump, and timing belt because the headgasket sounds like a likely cause. If you already got the head off you mine as well change the tbelt and waterpump.

 

[92laserboy]

yeah mights as well do that because they dont cost that much so i will do that