2.3L Coolant Issues
I have a 1986 Ford Ranger 2.3L 4 cyl. I just tore apart the coolant system due to the fact that the coolant gauage wasn't reading, however when we pulled the sensor, and warmed it up with a torch the gauge started to read, there is good ground all ready where the senesor screws into the block.... we eplaced the water inlet, t-stat, and the heat tubing... We also blew out the heater core, and flushed the radiator.. Still the gauge doesn't read, adn I get warm air at best out of the vents. I put it back together like it was taken apart.. however the own prior to me was not a very good mechanic... Do you know where i might find the coolant flow diagram to make sure i have the heater core hooked up correctly, etc.
Thanks Dale |
Re: 2.3L Coolant Issues
Based on your engine being a 4-banger, it is likely your water pump impeller is rotted out. The gauge sender and heater core are at the end of a very long and high push. When the pump rots out, the design of the 4cyl cooling system prevents circulation from reaching the heater core and the gauge sender. Your symptoms are classic.
Run through the no heat troubleshooting guide I made and I suspect it will lead you right there. >>> http://www.fordrangerforum.com/how-s...ing-guide.html <<< |
Re: 2.3L Coolant Issues
1. A water pump with a rotted impeller would cause overheating.
I had the same problem. The gasket that seals the thermostat to the top of the t-stat housing was bad allowing the coolant to bypass the thermostat. Now I have heat and the gage comes off the cold mark. On the 2.3 and I would imagine the 2.5 would be the same the t-stat has to have a seal. |
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Re: 2.3L Coolant Issues
Thank you both for your input. I just want to be clear.. So it doesn't matter which side of the heater core is hooked up to the water pump, and or the water inlet? I though this had something to do with it... is there away to see if the impeller is gone without tearing it all apart?
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Re: 2.3L Coolant Issues
I don't think it matters. Usually in is on the left and out is on the right I think, but I don't see how it would matter. The only way to tell with the pump is to remove it. I know, sucks.
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I pulled the water pump last night and the pump, and the impeller are fine.. so any other thoughts? I still need to reattach the fan (and i went ahead and put in the new wp I bought, also changed a tension-er pulley), so i wont be able to tell you which hoses are hot etc... until tomorrow sometime..
thanks Dale |
Re: 2.3L Coolant Issues
Where does the troubleshooting chart lead you to?
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Re: 2.3L Coolant Issues
It says the heater core... i guess air getting through it when i blew it out, is different from liquid trying to get through......
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