I recently noticed in my 96 ford bronco 5.0 that when i turn the heat on it goes from cold to warm and then back to cold over a period of driving,but nowhere near as hot as it use to blow and also the tempature gauge fluctuates help??

Bucking Bronco (unpredicatable stalling) - 80-96 Ford ...

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Jan 7, 2011 - 20 posts - ‎5 authors Page 1 of 4 - Bucking Bronco (unpredicatable stalling) - posted in 80-96 Ford BroncoTech Support: I have a 1996 Bronco. ... BUT, on the way home today--about 25 miles into the trip, it started again. ...... F4PZ-9155-B Kit BB - 1990/91 5.0L/5.8L/7.5L (allwheel bases except 137" WB and 161" WB) AG $ ...

LET YOUR CAR WARM UP FIRST!! or you risk the chance of over heating and casuing engine damage. start your car let it warm up for 5 to ten minutes and then try the heat. also when you start you should NEVER have heat on right away. the heat that you feel comes from the engine. and if the engine is cold and you are trying to heat it up it will put stress on the engine and over heat. ALL cars have to wait for their heat. that's why you see peoples car running in the morning with no one in it. so when they do get in it they have heat. heat will not work until the engine is warm.

run fault codes and look for a sensor fault . Possible ambient air temp sensor/MAPMAF sensors

Doesn't want to turn over, or doesnt want to run even though it turns over? If it turns over but just wont "catch", then you most likely have a problem with your anti bleed back valve in you fuel injection system. The system isn't holding the proper fuel pressure for a warm start.

Sounds like the thermstat may be installed wrong or stuck open. If your engine temp is low (on the dash) then this is the case. If the engine is running at a normal temp, then you hear core is full of crap, and will need to be replaced.

chances are your core is the problem.

remove the two hoses that go through the firewall and flush water through them both to clean the core. My 70 mustang did the same thing and I flushed the core and it works fine now.

the shims are not why you go thru starters. Usually its caused because the heat shield was not reinstalled or the wiring is bad. Bad wiring causes the stater to draw lots of amps leading to overheating and damage. If the truck runs go to a repar shop and have them do a starter cranking test. If it passes then I would be looking for a heatshield if missing

change the electronic ignition module.try this as well.go to an electronics parts place and get a can of cold spray.mg chemicals or equivalent. \spray the module the -60 temp will take the heat out and if it runs,that is the problem. the heatsink compound on the back of the module dries out and it overheats.heat sink compound MUST be used when it is replaced .it is a special high heat di electric silicone based compound...

Big motor. Big carb. You can tighten the choke down a little to make it warm up faster.

it takes quite a while for a diesel to warm up by just idling in order to produce any heat.you have to put them under a load (drive it), before you will get any noticeable heat.if you have a block heater, plug it in 4-5 hours before you plan on driving it and that will definitely help produce interior heat quicker.