94 s10 4.3


Asked by Nov 27, 2014 at 12:38 AM about the 1994 Chevrolet S-10 2 Dr LS Extended Cab SB

Question type: Maintenance & Repair

i have a 94 s10 4.3 and when it runs about 20 min the top radiator hose builds up alot of pressure and get so hot u can barely touch it, i put new thermostat and water pump on it but it still does the same thing. any other ideas what it could be?

6 Answers

sounds like bad rings. sorry

or radiator is stopped up. or heater.core. also make sure thermostat isnt upside down. ive had more.than a couple thermostats bad outta the box. oh and u have to burp system of air after thermostat change


my heat was working before but its not now, and i jus had to change freeze out plug too. how do i burp the air out?


and also the whole radiator is cool except the side where the top hose runs into it.

sounds like thermostat man. change it and pay attention to how its in there. it goes cone side up. spring down. and you see in the pic. this one has a tiny little flapper thing. it has to be positioned right if yours has one. i doubt it does but it may be bad brand new. test it in a pot of boiling water.

oh and when youre done and you put it all back together leave radiator cap off and fill radiator. let it sit and run..with the heater on. air bubbles will start coming out then water will come out. keep an eye on temp. gauge and wait on the thermostat to open. it should be obvious. water level will drop quite a bit. fill with water again if needed til full. no bubbles no air. heat should get warm too.

Your Answer

Add photo

Related Questions


Looking for a Used S-10 in your area?

CarGurus has 1,819 nationwide S-10 listings starting at $1,749.


Search Chevrolet S-10 Questions

Chevrolet S-10 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 1,970
#2 John Saffrahn
John Saffrahn
Reputation 890
#3 Trebor66
Reputation 840
View All

Related Models For Sale

Used Ford Ranger"
259 Great Deals out of 7,727 listings starting at $988
Used GMC Sonoma"
9 Great Deals out of 577 listings starting at $1,799
Used Toyota Tacoma"
622 Great Deals out of 30,180 listings starting at $2,850
Used Ford F-150"
3,174 Great Deals out of 216,366 listings starting at $1,900
Used Dodge Dakota"
163 Great Deals out of 4,813 listings starting at $900
Used Chevrolet Blazer"
1,623 listings starting at $1,999
Used GMC Sierra 1500"
1,023 Great Deals out of 56,283 listings starting at $2,499
Used Dodge Ram 1500"
513 Great Deals out of 13,809 listings starting at $995
Used Chevrolet C/K 1500"
1,131 listings starting at $2,400
Used Chevrolet Camaro"
811 Great Deals out of 38,791 listings starting at $2,650
Used Jeep Wrangler"
441 Great Deals out of 16,281 listings starting at $3,400