Question about 1994 Jeep Grand Cherokee

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Radiator caps stays cold even after normal running conditions

After running my jeep and its at normal running conditions the radiator cap is always cold and i have no heat either

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 512 Answers

SOURCE: 98 jeep starts cold sputters, no power

the p0171 code is for a fuel system lean code......possible causes are a cracked exhaust manifold.....bad o2 sensor...bad coolant temp sensor fuel pump.....lean fuel can cause the other codes you have for misfires

Posted on Sep 30, 2008

  • 4 Answers

SOURCE: 2004 Jeep wrangler 4.0 - 6cyl overheating

I had the same overheating problem in my jeep ! My problem was finaly found out to be the clutch in my fan its a different kind of clutch system it work as this. When your jeep gets warmer the tighter your fan clutch gets .While cool your fan moves slowly. now to test your clutch just warm up your jeep and rev it up a bit if your fan dose not pick up speed then it is sliping.What will come out of this is that you fan will the seez and run full all the time. if you jeep dose not overheat wile moving then it is not your thermo stat period.

Posted on Oct 14, 2008

onyeredson
  • 404 Answers

SOURCE: The heat in my 1992 Jeep Wangler is not working.

Hi!
It appears we have an Air lock scenario and you will need to perform a system Bleed.
Park the vehicle on level ground, when cold remove coolant filler cap, start engine and leave to idle, turn heater on full and blower to max. When engine reaches operating temperature watch and listen near coolant filler, keep clear as gurgling and hopefully a boil over should occur. Top up with very warm coolant and wait as it may do it again.
Check for heat inside vehicle if warm replace coolant cap but keep an eye on temperature gauge as the ~Air lock may have moved on from heater matrix/core so proceedure needs to be carried out again from COLD.
If persistent boil ups/over attention must made in the cylinder head
or gasket area, or possibly water pump?
Please press the Blue button to appraise my FREE Efforts, Thank You!
Paul 'W' U.K.

Posted on Feb 05, 2009

freetek
  • 5568 Answers

SOURCE: radiator fan not working replaced relay,temp

You didn’t mention replacing the temperature sensor located on the block in the path of the ‘cooled’ coolant.
I can’t tell you any closer where to look for it since you didn’t specify which engine you have.
This device is a solid state item called a thermistor.
With the air temperature around 77 degrees F and a 'cold' engine, it should measure about 10,000 Ohms and hot, around 1,200 Ohms while disconnected from its mating connector.
With the ignition on, and the connector disconnected from the sensor, you should measure about 5 volts coming from the ECU.
If this has failed, the ECU is not getting the right info back from the sensor and doesn’t know if the fan is needed or not.
 

Posted on May 26, 2009

  • 6982 Answers

SOURCE: 2004 jeep grand cherokee larodo 6v overheating

If you are referring to the fan inside the cab, I'm not...checked the radiator fans?

Posted on Jun 23, 2009

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4 Answers

I have a 97 jeep grand cherokee...the radiator hose is collapsed. Does that mean I need to replace it or add more fluid or something else?


Hi , it sounds like you have caused a vacum i.e. not enough water in the system. You have to check you car when the engine and water has cooled down. The expansion tank is were the water level has a line you must fill it up to the level line with water when the engine is cold. And when its cold weather you have to use antifreeze to top up the level.

Jan 08, 2016 | 1997 Jeep Grand Cherokee

1 Answer

At what temp is my 99 cadi dts considered to be overheating. It has gone as high as 120? Should I be concerned.


The radiator cap regulates the water pressure inside the radiator. The reason the cap has various spring ratings is because the water is typically hotter than boiling point to match the requirement of the engine. Most engines operate best at above 100 degrees C, and this is why the water needs to be pressurized. Each engine's optimal temperature range may differ slightly from model to model, but most are fitted with a temperature gauge to allow the driver to judge for themselves if the vehicle is overheating.If your vehicle is operating above normal, then please check the following:
1) Radiator cap for fit and corrosion.2) Condition of radiator. Feel from top to bottom after running. If cold in one area, then this could indicate a blockage. (replace radiator)3) Remove and check thermostat. Place in a glass of hot water, and view its operation (should open). Place in cold glass of water and view (should close).4) Operation of radiator cooling fan.5) Addition of antifreeze. Antifreeze helps even out hot temperature within the engine and improves performance and running.6) Pressurize system and check for leaks.
If none of the above are issues, then remove temperature sensor and compare resistance to a new one at the same temperature. Replace if necessary.

Nov 02, 2012 | Cars & Trucks

1 Answer

High pressure in radiator 1997 ford ranger


You might have a head gasket issue still. You should not see any geyser out of the radiator with cap removed, nor continuous bubbles if you start the engine up cold. A random bubble is not a concern.

If you start it cold with radiator cap removed, you should should not have any coolant being forced out the open cap location. If you do- even a small amount when cold means there is combustion chamber pressure entering the cooling jacket, and it will not always reveal in the oil pan when the leak occurs outboard of the oil gallery locations. A continuous stream of bubbles is also an indicator. Normal thermal expanision will occur as engine heats up. If you had the small hose that tapped off of one of the heater lines, and you simply plugged it or otherwise removed it to save some money on a radiator- that in itself can be the problem- that small hose bled air out of the heater core and out of the head so there would not be a need to "burp" the system of air. If you did not have it initially, your truck did not have that hose, but you might try burping it of air to make sure you do not have a pocket of overheating in one cylinder of the engine,

Normal running pressure is 16 PSI when hot, any more than that will force coolant out of the side tank and into the reservoir. Some of that expansion is normal.

Unless you have low PH water or serious galvanic corrosion going on elsewhere in the system, you should be seeing more than 2 years of service life out of a radiator.

With a normal engine you should be able to run at idle with the cap off, and provided there is room for thermal expansion initially, you will be able to watch the flow begin as the thermostat opens. All that should happen if there is not adequate room for expansion, is the coolant simply rises and overtops the radiator cap location.

Dec 27, 2011 | Ford Cars & Trucks

2 Answers

My sunfire overheats and leaks out overflow everytime i drivee it.i changed water pump,thermostat the fan is working fine and had a water pressure test done last mth


DID YOU BLEED AIR OUT THE COOLANT SYSTEM.TO BLEED COOLANT SYSTEM, FILL THE COOLANT SYSTEM THROUGH THE RESERVOIR TANK OR THE RADIATOR UNTIL THE FULL COLD MARK IS REACHED.BESURE TO USE 50/50 HALF WATER AND ANTIFREEZE.YOU CAN BUY ANTIFREEZE THAT IS ALREADY PREMIX 50/50.AFTER ADDING ANTIFREEZE TO RESERVOIR OR RADIATOR FILL RADIATOR TO FULL MARK OR IF YOU DONT HAVE RADIATOR CAP ON RADIATOR POUR ANTIFREEZE IN THE OVERFLOW JUG UNTIL COOLANT LEVEL STAY THE FULL COLD MARK.WAIT AWHILE UNTIL COOLANT LEVEL STOP DROPPING.NOW INSTALL THE RADIATOR OR OVER FLOW JUG CAP.START THE ENGINE AND ALLOW IT TO RUN UNTIL NORMAL OPERATING TEMPERATURE IS REACHED AND THE UPPER RADIATOR HOSE BECOME HOT.STOP THE ENGINE AND OBSERVE THE COOLANT LEVEL IN THE OVERFLOW JUG. THE COOLANT LEVEL SHOULD BE AT THE FULL HOT LINE.ALLOW THE ENGINE TO COOL UNTIL THE AMBIENT TEMPERATURE IS REACHED THEN CHECK THE COOLANT LEVEL IT SHOULD BE AT OR ABOVE THE FULL COLD LINE.ADD MORE COOLANT IF NECESSARY. WARNING BECAREFUL WHEN OPEN THE RADIATOR CAP OR JUG OVER FLOW CAP.USE A LARGE RAG OVER THE RADIATOR CAP TO KEEP FROM GETTING SCALDED.OPEN RADIATOR CAP A LITTLE AT A TIME TO KEEP FROM GETTING SCALDED.WAIT UNTIL ENGINE COOL DOWN BEFORE OPENING RADIATOR CAP OR OVERFLOW JUG CAP.WEAR SAFETY GLASSES.

Jul 12, 2011 | Pontiac Sunfire Cars & Trucks

2 Answers

2008 Impala heat problems


remove the radiator cap and let the car run for 30 minutes to let the air out of the heater coil, these radiator caps on the 2008 Impala will not bleed off, while running notice if air bubbles air slowly rising to the top of the radiator cap, re-install cap and see if this fixes problem, we also purchased a new radiator cap, this fixed my wifes car.

Dec 07, 2009 | 2008 Chevrolet Impala

1 Answer

No heat ..help installed new heater switch, replaced water pump..replaced coolants, and thermostat......................what else could it be? Nissan 2003 GXE Sentra 1.8 L Engine/...


you could have an air pocket in the cooling system that has to be burped. With a cold engine, park uphill and leave the radiator cap loose. Fill radiator and coolant reservoir. Start engine with cap loose and run at 1500 rpm until temp gauge reads normal. Feel if top radiator return hose from engine to radiator is hot. If yes, coolant is flowing and thermostat is open. If cold, thermostat is not staying closed until engine is hot.

report results.

Oct 29, 2009 | 2002 Nissan Altima

1 Answer

I have a 1996 Maxima, when the car is moving the heater works, when it stops, even at a light it blows cold air. What could the problem be?


It sounds like your thermostat may be a bit cogged, to check it simply open your radiator cap (not reservoir) before you turn on your car in the morning when it's completely cold and leave it open & running until it reaches the normal working temp, simply look inside the radiator if water flows freely, if not the thermostat may be the problem. (remember to use eye protection and NEVER open the radiator cap if the car was running previously, even if the engine is warm only. This may cause serious burning damage) proceed ONLY if the engine is completely cold.

Oct 10, 2009 | 1996 Nissan Maxima

1 Answer

Jeep Overheating?


I would suggest you have the radiator and cooling system pressure tested . .another option would be to get a new radiator cap and try that. If you want to do a quick test for the radiator cap .. try loosening it to the first notch and see if your overheating problem subsides ..

Apr 10, 2009 | 2002 Jeep Wrangler

3 Answers

Engine over heating 2002 jeep 4.0 liter


The bottom hose will not contain an air pocket. Check your water pump. When the engine is cold, take off the radiator cap and start the engine. When the engine temperature indicator shows normal operating temperature, you should be able to see the coolant moving through the radiator. If not, the water pump is not working. Could be a missing belt, could be a bad pump.

Mar 03, 2009 | 2002 Jeep Wrangler

2 Answers

2001 JEEP ..RADIATOR IS COLD


what is the water temp at the dash...leave the rad cap off until normal temp... might be an air lock. If the engine overheats fast and blows coolant out the filler then its a blocked radiator...why did you repace the thermostat

Dec 24, 2008 | 2001 Jeep Cherokee

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