Engine Cooling problem
1992 Toyota Corolla 4 cyl Front Wheel Drive Automatic 116000 miles
I replaced my thermostat (it was periodically sticking open) with a genuine Toyota stat & also replaced the lower hose. The new stat had 82 degrees C engraved (that's 189.6 F), same as the old one. When I tested the old stat, it opened at about 187 F but the new stat didn't open till about 197 F (it closed at 186 F). The instructions in Haynes for Corolla 84-92 says to run the engine (after refilling) with the radiator cap off, until the thermostat opens & coolant begins to flow thru radiator; then top it up & burp it by sqeezing the upper hose. Well, the thermostat won't open. The gauge on instr panel goes to midpoint; I don't know if that's high enough to open the new stat, but the old one kept it some cooler before it started acting up. I'm afraid air is trapped & not letting the coolant get to the stat. I've had trouble purging the system in the past after doing a radiator flush. I'm sure I got the stat in correctly, with the possible exception of the exact orientation of its bleed. I oriented it in the up position & didn't know to shoot for the 11:00 position that I see rec by "certified 2carpros tech" mmprince4000 in one of his answers on this site. What can I do? I'm afraid to drive the car any distance for fear of overheating it.
have the same problem?
Wednesday, January 13th, 2010 AT 11:11 PM