Posted: 4/16/2003 4:36:22 PM EDT
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I'm having a cooling system problem that I can't figure out. This all started out as a general maintenance (hoses and belts) and I thought I saw a drip of coolant coming from the water pump. The vehicle is a 94 Toyota pick up with a 4 cyl, auto, ac and 233,000 miles. I replaced the belts, t/stat, hoses, h20 pump. After this work, the vehicle developed a problem of almost pegging the temp guage every time the truck is cold started if the heat is turned on at all. If the heater is turned on at all, the temp also runs hotter (1/2 way on the guage with heat on, 1/4 guage with the heat off). I thought it may have been a bad t/stat (napa), so I replaced it again with a new Toyota t/stat; changed nothing. The radiator was getting a little rough, so I replaced it with a new one; no change. It also seems to run hotter than normal with the a/c on and it heats rapidly if you don't keep moving (only with a/c on). The only thing I havn't replaced is the fan clutch, but it seems to be working o.k. If anyone has anyideas, please add on here. Thanks in advance. Sleepy717 |
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OK I'll bite. Maybe you have a nice little air pocket in your cooling system. That's F'd me over before. I don't know how to purge the system on a toyata, sorry. You said you have a clutch fan, did you take it off when doing the belts and hoses? You probably installed it backwards if you did, I've seen that be the cause of similar issue's. |
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This may sound dumb, but I have seen it done before. Are you sure you didn't reverse the fan? Instead of pulling outside air into the radiator, it is pushing engine compartment air thru to the outside. Also, double check to make sure there are no air bubbles trapped in the block. Fill up the block before you install the thermostat. fullclip |
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did you get the right water pump? just because the counter-monkey gave you what his computer said was right doesn't necessarily mean it is the right one. when you put on new belts are you sure you routed them right and are not actually turning the water pump backwards instead of forwards. |