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View Full Version : thermostat?

blackedout06
08-21-2009, 09:18 AM
everyday for that past week or so when i get on the interstate on my way home, the s10 temp. rises up to like 240-250 degrees, the "check gauges" light comes on and then it drops down to regular temp around 200-210 degrees where it usually stays. i checked antifreeze and it has plenty, no leaks so idk im leaning towards bad thermostat. anyone with ideas?
Samickguy15
08-21-2009, 10:08 AM
240-250 degrees is asking for a popped head gasket and/or warped head. I'd be very carefuly with that business. Thermostats are designed to fail open IIRC. I'd definately get a new one. Probably a water pump too while you're at it.
Nanner
08-21-2009, 10:16 AM
240-250 degrees is asking for a popped head gasket and/or warped head. I'd be very carefuly with that business. Thermostats are designed to fail open IIRC. I'd definately get a new one. Probably a water pump too while you're at it.

x2 - especially if your s10 is a 4 cyl- its not a matter of IF it will happen, its a matter of WHEN it will happen...
blackedout06
08-21-2009, 10:20 AM
x2 - especially if your s10 is a 4 cyl- its not a matter of IF it will happen, its a matter of WHEN it will happen...

yeah like i said it just started doing it within the last few days maybe a week. this morning i watched it on the way to work and it got up to like 225-230 but dropped back down quickly. tonight i will go to the parts store and at least get a thermostat then.
blackedout06
08-21-2009, 10:26 AM
wow, maybe i'll buy a water pump too. i didnt expect them to be so cheap. i was thniking at least $100 but a reman is only $18.99 and a new one is $30.99
Samickguy15
08-21-2009, 10:29 AM
I'd suggest you go new, as I've encountered problems with reman pumps before. They're cheap, because there is not much to them, plus they are a common wear/repair item, so massive quantities.
blackedout06
08-21-2009, 10:31 AM
I'd suggest you go new, as I've encountered problems with reman pumps before. They're cheap, because there is not much to them, plus they are a common wear/repair item, so massive quantities.

right, that engine is easy to work on too so it shouldnt be much to get it swapped out.
Nanner
08-21-2009, 10:41 AM
right, that engine is easy to work on too so it shouldnt be much to get it swapped out.

yeah water pump in my old sunfire (4 cylinder, basically the same motor) was a cakewalk
blackedout06
08-21-2009, 10:56 AM
well thanks for the help guys!