Question about 1988 Ford Bronco II

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Overheating intown or towing

Will an electric cooling fan resolve my problem? The engine I have in came from a 87 bronco2 .I cleaned it had a clean radiator installed new heater core/hoses/180 thermostate,tried ice water product.and it still wants to boil over. We rebuilt overdrive trans at same time.At this time I am running without thermostate installed.Seams as same problem exsists with differant motor,and cooling system.Hot weather makes this motor run hot.Is the overdrive causeing the motor to run hotter.Maybe a larger trans cooler would be better? Can you help me with this ongoing problem? Idaho Gym

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  • idaho gym Aug 07, 2008

    Well,,,Guys and Galls,it didnt work in this situation.As it turns out the A4LD transmition is putting out an excess amount of heat.Do you know of a good tranny for sale? Best Regards Idaho gym.

  • idaho gym Sep 13, 2008

    There was a pin hole in the rad cap but it was replaced earlier. The cause was inproper seals were installed when the auto trany was rebuilt which caused the clutches to slip in the overdrive.Even at best though my rig wants to get a little warmer than I like when towing my bass boat when the weather is above 80 degrees.The fan did not help in fact it was worse.It is back to stock equipment at this time with the exception of an rad enhancer "cool"series cools like ice water. Thanks for your input,Idaho Gym.


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You might laugh, but have you put a new rad cap on? If the system is not holding enough pressure it can overheat.

Posted on Sep 12, 2008

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I have a 2002 lincoln ls it was running hot I needed a hydraulic cooling pump a thermostat and water pump replaced all of them and still running hot

Overheating on an older vehicle, especially one with high mileage, is not uncommon. Aside from the parts you mention, such things as fan clutch failure (or, alternatively, electric fan failure) can cause a car to overheat quickly at idle. If the car was poorly maintained, not enough antifreeze over a course of years may cause coolant channels in the engine block to rust shut, rendering the cooling system ineffective. Something as simple as obstructions to the front grille or rust clogging veins of the radiator can also reduce cooling capacity. A worn engine will also heat up very quickly under load.
You will need to observe when your vehicle tends to overheat (at idle? when driving? when climbing hills?), and use that as a point from which you may start diagnosis. Some things to check immediately are:
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  2. Check the operation of the fan clutch or, if your Lincoln is so equipped, of the electric fans (especially if the vehicle is overheating at idle or in traffic;
  3. Is the vehicle burning oil? Have the engine overhauled;
  4. Check for signs of rust buildup in the cooling system. Has the proper 50/50 ratio of ethylene-glycol coolant to clean water always been maintained? If not, suspect damage to the engine's cooling channels from corrosion or mineral buildup.

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MDX won't start on hot days

A faulty air conditioning system can cause overheating.

Fix: you may want to consider getting these parts of the vehicle checked:

Air conditioning system

I hope this helps!

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if you are selecting lower gears on a stick shift... good... if the car is automatic you should leave the shifter in drive position going up hills or towing. use lower gears to go down hills only. check the cooling fans for proper operation. also... their is a product or additive you can get called "Water Wetter" add this to the coolant to help the cooling system work better. Also, the engine thermostadt may me malfunctioning.

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It over heats. why???

It could be a number of thing but i would start off by having your radiator flushed and if your check engine light is on its more than likely that your sensor is out that tells your electric fans to kick on and cool your engine.It is called temperature control sensor and usually runs approx. $15 to $30.

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1 Answer

2002 kia sportage overheated and now will not start

Well the alternator would have nothing to do with the overheating! If the alt went bad, you'd be having electrical issues, not cooling issues. Why would you change an Alternator if it was overheating? Was somthing else happening at the time to make you think you had a electrical issue?

The thermostat could be stuck closed or the water pump failed, both common issue, sound like somthing is causing the engine to either run hot, or not cool properly.

Once the engine has overheated sadly the damage is done, you could have simply cooked a sensor,or it could be as bad as you could have warped the block or head, or one of a number of other things!

Hot engines are hard to start, you should let them compleatly cool down first! In fact you should have either checked the car out or had someone check it out before attempting to start or drive it again, this is why god created tow trucks! A $50 towing charge or a $5000 engine repair bill, I know which one I would choose!

Did the check engine light come on? Any other symptoms?

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What is the use of thermostat? is it true that by removing the thermostat, it will help in reducing overheating?

a thermostat maintains the engine to a pre determined temp which is most efficient for removing stat you will never reach/maintain the correct temp,so use more fuel,and cause more engine reduce the risk of overheating,keep the car maintained correctly,and if towing/climbing high terrain,fit a secondary electric fan in front of the radiator.fitted with a on off switch for when not needed.......(normal useage).

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1 Answer

04 Jeep Grand Cherokee Overheating

long answer but should get you solved.

You know for some reason jeep eliminated the FC relay for some models and now relies on the computer to determine when and at what speed the fan should run based on coolant temperature inputs and A/C compressor status. If the fan is not working properly i would consider replacing the fan,
"I have a 04 GC also with the 4.0 and I could not find my FC relay either. Nobody at a local dealer here had ever heard of this phantom FC relay problem. I was able to find an electrical diagram on the web that does not show the FC relay for the 04 GC but that was it. The diagram only showed the PCM and two relays in the PDC near the battery. My GC was overheating now and then. It would seem to overheat when you were in stop and go traffic or letting it idle. I was not losing any coolant so I replaced the thermostat but that did not fix it. After much frustration I started the engine and sat there and watched it run until it began overheating. I paid particular attention to the fan. When the engine began to overheat the fan was barely spinning and would even shut off at times during the overheating. I knew this was not right so that is when I began this search for the FC relay but I could not find it. I disconnected the fan and did some checking on the two speed electric radiator fan. It has a 3 pin connector where the center pin is ground. When I ran power to one pin and grounded the center pin the fan would run. However when I switched the power to the other pin I got nothing. I had already checked operation of the Low and High Speed relays in the PDC near the battery and all checked out so I went and picked up a new radiator fan assembly and installed it. That was yesterday and that fixed the overheating problem. I have concluded that for some reason jeep eliminated the FC relay for some models and now relies on the computer to determine when and at what speed the fan should run based on coolant temperature inputs and A/C compressor status. I also found out that although my GC does not have the towing package it does have the max cooling package. When I went looking for a new motor for the radiator fan at local auto parts store I was asked if it had the towing package and I answered no. Everytime I did they would bring out a motor that only had a 2 pin connector. Not one of them kept the motor that would be needed if you had the towing package. I bet if they did it would have a 3 pin connector on it. So while my GC does not have the towing package I think it has the max cooling package that usually comes with the towing package. I think the standard cooling package uses a one speed fan where the max cooling package uses a two speed fan. It may be that the standard cooling package uses the FC relay which is supposed to be under the passenger headlight but the max cooling package eliminates the relay and uses the PCM to control two relays in the PDC which in turn run the fan. One more thing....replacing the radiator fan assembly involves removing the shroud. One of the 4 screws that holds the shroud is in a very tight space. I fianlly got to it with a long socket extension and swivel. I know this is long but I hope it helps because I was very frustrated at the lack of informartion available locally and on the web in reference to this oddity" (article found on web)

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1 Answer

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have the system pressure tested,
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