Last post on Feb 08, 2011 at 8:14 PM
You are in the Dodge/Plymouth Neon
What is this discussion about?
Plymouth Neon, Dodge Neon, Sedan
#6 of 10 Re: Plymouth Neon Thermostat Housing Leak [irvinman]
Apr 06, 2009 (4:47 am)
Yes that small rubber seal is correct, though color will probably vary by company that produces and sells it. The neon uses recessed seals on alot of the parts instead of the traditional compression gaskets. While this does not make them all reusable, it also makes them easier to replace if need be. I haven't had to replace anything but the head gasket on my first neon because some idiot silicone the hell out of it, but the others were reusable. Check the store's return policy. If they'll let you return it if it's not opened, get it and pull your thermostat. Check the seal to see if there's any place where it's cracked or squashed more then the rest of the gasket. If there is damage to the gasket, replace it. If not, take the new one back and keep looking for the leak.
#7 of 10 thermostat
Dec 02, 2009 (9:18 am)
ive got a few questions here. i have a 2004 dodge neon sxt. it all started with my radiator breaking and all the transmission fluid ran through the motor, so i had the radiator changed and the transmission and the engine flushed by a mechanic. i brought the car home, and now when the car runs for a short while it overheats, and i no longer have any heat, could this be the result of a faulty thermostat, and when i change it do i need to drain the radiator fluids or not can someone please help me out with an answer as soon as possible because i want to get this problem taken care of soon thank you
#8 of 10 Re: thermostat [dinman]
Jan 02, 2010 (5:40 pm)
The problem with neons is getting all the water back in it. No heat problably means no water. A full radiator is not a correct indicator of enough water. Went thru this my self. I think a Haynes manual has a method.
#9 of 10 Re: thermostat [ramcharger]
Feb 22, 2010 (5:49 pm)
It is like digging a hole.....There is always more than what you took out! LOL
When you drain a cooling system and refill it. There MAY be more than what you took out. Provided you didnt spill or have a leak. The reason is that when you are putting the coolant back in, there is air inside the motor. And as your engine fills the air becomes trapped inside the motor with the coolant. Usually on the "backside" of the thermostat.
To prevent this problem this you should bleed the system as you are refilling.
You can do this by adding coolant then starting the engine and as it the engine warms up you add a little more at a time. To do this properly it should take about 10 - 20 minutes, watching your gauge periodically at the same time.
This could also explain why some of the other people on here are having overheat problems after certain fixes.
And you would be totally correct when you said no heat means no or low coolant levels!
#10 of 10 thermostat problems again
Feb 08, 2011 (8:14 pm)
it got below zero couple weeks ago and 98 neon would not blow hot air. the next day still no hot air but car overheated, i took out thermostat and it was locked open, by the copper tabs.
changed it had no problems, not today got below zero again, and now the same problem i have not yet taken the thermostat out but i bet it will be the same, any reasons why it keeps happening like this. thanks.