It started overheating, the guy that sold me it told me it didn't have a thermostat, so when i went to buy one it overheated, i let it sit to cool down, left the store and it wouldn't go more than 2 miles an hour. let it sit for another two hours fired right up, but still didn't have any power. I just put in the new thermostat, did a tune up, and put new coil packs in it. it isn't overheating BUT the top hose that connects to my radiator is hot while the bottom and radiator are cold. help?
A new part can be faulty so remove the thermostat and submerge it in a suitable container in kettle boiled water and watch to see if it opens
Your water pump is bad.
SOURCE: 1995 honda passport i have installed 2 thermostats
is the temp gauge getting hot as you drive the vehicle or does it remain at a constant temp? if no problem in coolant temp getting too hot (and overheating), then it should not be an issue.
you're sure radiator is filled with 50/50 mix of coolant & water to the top of the cap? if there's an air bubble trapped it could cause a problem. some cars have to be "burped" after refilling with new antifreeze.
if, however, its overheating, then i believe your radiator may be clogged preventing the coolant to flow across the radiator fins and cool properly.
try this. warm the car up (not the point of overheating, but hot enough for the t-stat to open), turn it off, make sure the electric fan is off (or unplug it is so equipped), then run your hand across the radiator. it should feel warm. if you feel cold spots, then that portion of the radiator is clogged preventing flow. new radiator is now in order.
hopefully its only a clogged radiator and not a clogged engine block.
hope this helped.
SOURCE: 1991 honda accord is overheating. Installed new
When the car is completely cool,check the electric fan(s) for smooth rotation.
Clean/check/change the thermo sensor,contact and wire.
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Excavate air pocket in coolant system / check for head gasket leak
This test will kill two birds with one stone.
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MAKE SURE THE COOLANT SYSTEM and ENGINE IS COLD!
RAN THIS TEST IN A WELL VENTILATED AREA ONLY!
You will spill some coolant during this air pocket purge test.......BE
KIND TO THE ENVIRONMENT and ANIMAL please clean up after the test!
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Put the front end on a pair of ramp or park your car on a VERY STEEP HILL (radiator facing top of the hill) .
Top of the coolant reserve tank
Let it ran for 10-15 minutes.
Monitor for air pockets escaping from coolant reserve tank.
Small amount of bubbles is OK at 1-5 minute mark
After the thermostat open up (after 195 F warm up) at
5-12 minute mark or after high idle you should see less bubbles.
If you do not see any in rush of bubbles then your thermostat may be
partially stuck or rusted badly inside the thermostat hosing.
Give the thermostat host few gentle taps.
If you see larger bubbles surfacing after 15 minutes then should do a
hydrocarbon (HC) dye test to test for potential head gasket leak.
Let engine cold down and top off coolant reserve tank.
Start monitor for coolant lost
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A coolant flush is require every 2 years or 24,000 miles.
I recommend the thermostat that has a relief pop-let to reduce the change of burst radiator and coolant hoses.
Make sure you get a new thermostat gasket,black RTV and fresh coolant for the job.
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