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Hey all,
I signed up on the forum to specifically ask this question and to hopefully get some answers or suggestions. So here’s my problem, I have a 1994 3.0L Ford Ranger 4X4, reg cab, long box, and I cannot for the life of me get it to warm up and put out some heat. Here is what I have done and what I have found out, first I followed this guide http://www.fordrangerforum.com/how-s...ing-guide.html With no luck, so here’s the rest:

Temp gauge only comes up to the start of the “N” on normal
Top hose of the Rad is Warm
Bottom hose if cold
replaced the thermostat 4 times now (even used one that opens at a lower temp)
Water pump IS working (got my wife to start the truck while I had the cap off, level dropped, also topped up coolant at this time)
Tried a different water pump just to be sure
Heater core line is warm at best
Replaced the temp sensor

Tomorrow I might completely pull the thermostat just to see if I can get the bottom of the rad warm. Just to be sure the motor wasn’t over heating, I checked it with a thermal imaging device against my 97 Ranger 3.0L, and it actually seems to be running cooler than the 97. I also have a dodge ram that is doing the same thing, and I have done everything except change the motor to try and get that one warm with no luck. I have had the dodge to several shops and don’t want to follow down the same road with the Ranger. So here I am, I hope you guys can give me some guidance and maybe some suggestions that I might not have thought of. Any help would be awesome!

just an update, pulled the thermostat and let it run for awhile. All the rad got slightly warm, but of course it still stayed quite cold over all.

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1994 Ford Ranger
3.0L, 4x4, Regular Cab, Long Box

Well its into the shop, told them to fix it or keep it. Will let everyone know what I find out so hopefully it helps someone else.

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1994 Ford Ranger
3.0L, 4x4, Regular Cab, Long Box

Im betting plugged heater core and pulling the tstat will make the no heat issue worse when its cold.

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99 x-cab 4x4 4.0l auto
mods, cranked t-bars, silencer delete, k&n drop in, Trans Go stage 3 shift kit,3200stall Fuddle Racing Torque Converter,
VANIR 63mm TB, Roush split rear exit exhuast, E-Fan, JBA headers
Auto up/down both windows, OHC, EATC

03 Crown Victoria Police Interceptor

heater core was cleaned several times. Like I said in the post, its not a problem with the heater, its a problem with the truck not getting up to heat at all. So far the dealer is stumped, they said there is absolutely no reason the truck shouldn't be heating up, it just isn't... They tired bypassing the heater all together to try and get the truck warm enough to open the thermostat, and had no luck truck still won't heat up enough to open it. They said there is a few more things they are going to try, and should be getting back to me within a week.

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1994 Ford Ranger
3.0L, 4x4, Regular Cab, Long Box