98 Honda Civic Overheating?
I have a 98 Honda civic Lx its overheating, It has coolant but when it starts to overheat it puts all the coolant in the reservoir. It does not consume coolant or leak coolant. Hoses do bulge up. I have replaced the coolant cap, thermostat.
Can a bad water pump be the source of problem?
Added (1). Also radiator fans have been bypassed so they run all the time.
COUNTRY BOY is SO-SO here! If HOSES are bulging, your have WORN HEAD BOLTS or a warped CYLINDER HEAD! WITH engien fully HOT, check for bulging! NEW HEAD BOLTS work GREAT on four banger HONDA engines! Do NOT use PRESTONE IN HERE EVER, either only genuine HONDA factory coolants, thank you! NEW HEAD bolts can repair a slightly warped head if done with ENGINE FULLY HOT! Check COOLING FAN SWITCH and replace it at 100k miolinter54n\vals using ONLY HONDA PARTS and not auto sp\tors\e junk parts! Usually DENSO supplies the sensors for HONDA! POWER WASH the space behind the RADIATOR< where leaves, bug bodies, feathers, paper, and small animal droppings have collected! This IMPROVES air flow around engine, rad, and even A/C condenser lives! T|IT is the SANDWICH from HELL! Clear all blockages here! BYE NOW! NO PRESTONE EVER in ANY year HONDA engine! HEAD BOLTS that are over S T R E T C H E D will do this. TORQUE WRENCH time!
HI, I agree with Country Boy but would add the radiator cap or the purser cap on the system not holding the proper amount (7 to 14 lbs) and its letting to much coolant out of the motor, then its lost and next time you start it your low on coolant.
Only two things will cause the coolant recovery reservoir to overfill when the engine heat's up.
#1. A thermostat that is sticking closed. #2. An internal cooling system compression leak. The dealer of your car can tell you which one it is.
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