ok had the coolant flushed on my s13 240sx cause it was overheating after i installed the new radiator, thougnt might be to much air in the system worked great till i dorve it for like 3 hours one day in the misssissippi heat it over heated on me, took it to the shop got it back said it was the cap it was weak, drove it for like 30 min it was fine then drove i later today for like hour and a half and bam over heated whats the deal think maybe the thermostat is stuck open or not there at all i just bout the car,
(the car reaches operating tempatrues normally it dosnt take forever like most themrostats that arent there) i figured it might be this casue it only happens on long trips pls help im going nuts
Still overheating
-
Eikon
- Posts: 6928
- Joined: Sat Apr 24, 2004 3:20 am
- Car: 71 240z, 93 Supra TT
- Location: Lake Orion, MI
- Contact:
Re: (seabee)
A tstat being stuck open will never be the cause of an overheat. For an engine to properly cool itself their needs to be a proper flow of coolant through the engine to the radiator and back. If the tstat is open you will achieve that goal. Closed or partially closed will hamper that effort.seabee wrote:well you know a car will over heat if the thermostat is stuck open just takes forever for it to heat up but now that you metnion the thermostat being partially closed makes sense to its at the shop now well see what he has to say
Other things that might prevent proper cooling flow would be: Clogged radiator, faulty water pump, air in the coolant lines, clogged coolant lines.
Also, a blown head gasket can lead to issues that will cause an overheat.
I agree with your first post when you mention that a bad radiator cap may be the problem. Try getting a new one. You don't need the 1.3bar.. a standard 1.1 bar will be just fine. Give that a shot.
well i changed the tstat today put in new coolant my buddy decided to start it while i had the cap off bending over the motor needless to say i got covered in coolant, stuff shot out of there like a geysor, guess its tiem for a new head gasket hopefully not a new head give me some input what ya think and how hard are they to change on these
-
s13sr20chris
- Posts: 4148
- Joined: Tue Jun 10, 2003 9:32 am
- Car: '89 Nissan S13 w/redtop running 13psi and not leaking fuel anymore
- Contact:
Re: (seabee)
sometimes it will shoot out like that while burping air. the telltail sign is if it only shoots out when you give it a throttle snap or if the bubbles are consistant even after bleeding the air. in many cases(but not all) you will find white coolant smoke or wet plugs.
Re: (s13sr20chris)
man it wasnt like a little burp like when bleeding air when he turned the motor it shot up like 2- 3ft in the air, plus lately every now and again i seen some white smoke while i was idling so im going to compression test it and see whats up