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Maintenance & Repair Cooling Systems -- Problems & Solutions (Radiator, Fan, etc)
561 messages, Last post on Nov 12, 2009 at 1:37 PM
You are in the Maintenance & Repair Forum. Your Host is mr_shiftright
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Hey I have a 1986 toyota pickup truck. I had a radiator leak so i got a new radiator. Then the water pump leaked so i replaced that and the thermostat, my truck will still over heat but not all the time, only sometimes. Do you think it could be a bad waterpump or therm? there is no white smoke or water in the oil. The mechanic said I needed to change my clutch for the fan, he was able to stop it with his hand. Sometimes I smell a coolant smell from the engine area but not the exhaust. Sometimes ill have to top off the radiator, there is no leaks at all though. Any help would be awesome, the mechanic pressure tested it and he said was fine. faulty pump? Thanks for the help!
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Replying to: toyota83 (Nov 05, 2009 8:25 pm) This sure could be causing overheating. While at idle or driving slowly, the bad clutch is not turning the fan, which could cause overheating. When driving faster, you are getting adequate air flow thru the radiator, and are not overheating. This may be why you overheat sometimes and sometimes not. A way to test for a bad clutch - Get the car hot, warmed up. Idle the car, open the hood, have someone turn the ignition off. The fan should stop turning very quickly. Just a few spins, then stop. This indicated the clutch is working, meaning when hot it has high friction and will make the fan spin. If the fan continues to spin, it's broken - when hot it has no friction to turn the fan.
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Replying to: bolivar (Nov 06, 2009 3:35 am)
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Replying to: toyota83 (Nov 06, 2009 9:57 am) If you have to add coolant, there is only two reasons: -You have a leak -You have a bad head gasket and it is either being pulled into the pistons and burned out the exhaust or pulled into the oil system and the crankcase has coolant mixed with the oil.
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Replying to: bolivar (Nov 07, 2009 12:09 am) That's not good, by the way. probably not your problem.
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Replying to: Mr_Shiftright (Nov 07, 2009 9:01 am) Think we've got this covered now, between the two of us working on it?
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Replying to: bolivar (Nov 07, 2009 9:56 pm) |
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I POSTED A PROBLEM WITH MY CAR I TOOK IT TO PEPBOY'S AND THEY TOLD ME THAT IT WAS THE HEADS BUT THE CAR SHOWS NO SIGNS OF THEM GOING BAD TOOK IT TO ANOTHER MACHANIC AND HE SAID IT SHOW THAT IT IS RUNNIG GOOD AND NO SIGNS. IT DOES NOT MISS FIRE OR HEAT UP IT STAYS AT THE RIGHT TEMP 190 TO 210 BUT IT NEED WATER EVERYDAY ABOUT A 20 OZ CUP OFF WATER. THE COOLANT RECOVERY TANK IS BROKE ON THE TOP WERE THE BATTERY SITS. THE MACHANIC TOLD ME IT IS NORMAL NOT THE SEE WATER IN THE RADIATOR BUT WHEN I TURN ON THE CAR THE WATER WILL RISE TO THE TOP. I GUESS THE ONLY WAY I WILL KNOW IF I LET SOME MACHANIC TAKE THE HEADS OFF AND GET THEM CHECKED. 
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Replying to: trail03 (Nov 09, 2009 11:51 am) |
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CAN YOU GET A BAD READ FROM A PRESSURE TEST AND DOING THE DYE THING IN THE RADIATOR. MY CAR DOES NOT SHOW SIGNS THAT THE HEADS ARE CRACKED IT DOES NOT SMOKE,MISFIRE,WATER IN OIL,TEMP STAYED AT 190 TO 210. THE ONLY TEST THEY HAVE NOT DID IT THE PRESSURE AND REMOVE THE SPARK PLUG ONE OR REMOVE THE HEADS AND GET THEM TESTED EVEN IF THEY GET TAKEN OFF THE GASKETS NEED TO BE REPLACED RIGHT OR WRONG NEED HELP
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