Dodge - Ram :: Heat Gauge Crawl Up When Driving For Long But Truck Not Overheating
Nov 5, 2014
My 2001 Dodge Ram 1500 Magnum V6 keeps having a problem where periodically the heat gauge will inexplicably go to over heating, when the truck is not. It loves to do this when starting out on a long trip, though it only does it once. The heat gauge also likes to crawl up when driving extended periods on the road. It isn't overheating. I don't hear it gurgling or bubbling when I stop. In all this time, the air conditioner has worked and never warmed up. Lately, I've also noticed that the heater won't work when it's seeming to overheat.
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My car's heat gauge reaches to half and then stays there for the rest of the ride. When it reaches at/close to half, only then I hear a knocking sound while accelerating. However, if I press the accelerator only slightly OR full way down, then sound goes away. What is wrong with my vehicle? I have Dodge grand caravan 2006... (It has run 400000 miles)?
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I am working on this 99 Nissan and the issue is that the gauge shows the truck is over heating ,so we changed the thermostat ,the temp sending unit and that other thing next to that,and flushed the coolant system and bleed the system with new antifreeze and fresh water for the correct mixture..The truck still says its over heating ,the top hose hot and the bottom hose not anything more then it is when the truck hasn't been running.The truck starts right up and seems to run very well,then the gauge maxes right out and then wait for it to cool according to the temp gauge and drive a bit more,with in a mile its over heating again according to the gauge..I checked the oil and its perfectly fine and normal !I am so lost here,the radiator is like new and the clutch fan works right ,checked all the hoses and they are not collapsing ,water pump replaced a year ago...
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I am looking at a 1997 F150 with a 5.4 in it, guy who owns it says if you drive it down the street the temp gauge climbs and then the truck goes into limp mode but if you check the engine temp under hood it is nowhere near overheating. Where I should start to look for a problem here? If this is too complicated I will pass on the truck, its not worth it to me to get this truck if it is going to be a nightmare. I have a 2000 with a 4.6 that runs great so this would just be a spare for me, but would like to have it because its in such nice shape.
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My 2005 Hyundai Elantra GLS has had 0 problems. It has about 132K on it, but it's still awesome.
I was stuck in some nasty traffic the other day in 95 degree NC weather, and was idling for about 15 minutes with the AC on. Out of nowhere, it felt like my AC got warm and I saw my coolant temp gauge spike from just under midway to 3/4 of the way. Unsettling.
As soon as I got on the gas and drove for about 5-10 seconds, it dropped precipitously back to normal. I was able to recreate this behavior once I got home. Normal driving results in normal temperature. Both fans appear to running.
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I have had my 1998 Honda Civic for about 5 years now... I bought it used. Occasionally I have noticed my oil levels have been low every 2 months or so. Oil is not being burned and doesn't leak. It hasn't affected performance from what I can tell. I have basically monitored the levels and everything has been fine. There was also an electrical issue since I have had it.
About 8 or 9 months ago, I noticed the temperature gauge was basically in the red while driving. I pulled over and noticed the oil was reading empty. I put oil in it and took it to the shop the next day. They told me the head gasket was bad and that the oil and coolant were mixing and recommended I replace the engine. I asked them how long I could manage before the car quit entirely and he said maybe a month, two if I kept doing oil changes.
I put the heat on while driving it, and the temp was normal. I took it to another shop the same week. They couldn't get it to overheat for a couple hours. The guy told me it was probably the fan but wouldn't know unless he could see it overheat. He said the fan would cause it to overheat at stoplights when there wasn't air on the engine. When the car gets hot, it doesn't get worse at stoplights and is only after I've been driving like 20 minutes that it heats up. I asked that he call me as soon as he knew what it was and I would decide whether I wanted it fixed that day or not. Then I didn't get a call for awhile, and when I called them, they said the guy was out getting the part. I felt like they were rushing so I would replace the fan. I asked if it was the head gasket because I didn't want to fix a fan if the engine needed to be replaced. They said it was not. I didn't replace the fan. They also told my husband that we could save wear and tear on the engine by putting the air conditioning on instead of the heater. When we do this, it overheats. Its only when the heater is on that the temp stays normal.
I have been driving the car for 8 or 9 months now with the heater on with no performance issues. It doesn't overheat and even when I forget to put the heat on it goes up to the red, but doesn't "overheat" with the steam and whatnot. It doesn't seem to do anything to affect the performance of the car. We have replaced the radiator cap, which had pieces falling off, and it didn't work. The check engine light came on yesterday and the code indicated something to do with the transmission.
We took it to a third mechanic today and he said I needed a new thermostat... I do not see any sort of film in the oil. We just flushed the coolant today and there was no sign of oil. I'm totally lost on what to do. I feel like the mechanics have lied to me about what was going on. They contradict each other and the little things they told me don't seem to be the case or don't work.
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I have a 2006 Jeep Liberty 3.7L that has a temperature gauge on the dash that reads an overheat when driving. The oil looks normal, there is no white smoke, no bubbling from reservoir. I have replaced the following:
Radiator
Thermostat
Water Pump
Coolant Temperature Sensor
Coolant Reservoir Tank
I am not leaking any coolant and the reservoir level has been fine. I have let the vehicle idle for 20+minutes, with no overheat. When I drive it around, the temperature gauge will read an overheat. When I stop the car and pop the hood, the engine is not overheated and both rubber hoses to/from radiator are flowing the coolant. The only thing that will bring the gauge down is turning on the heater full blast. Could this be the gauge itself being bad? Could it be a short in a wire somewhere? I had thought maybe a head gasket, but have no symptoms of a head gasket.
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I have a 2002 Volkswagen Golf 2.0, I was driving and the temperature gauge starting raising pretty quickly. I stopped, checked the coolant and oil, both were at normal levels. The car cooled down pretty quickly, and I drove a little and it raised again. The heat is coming out cold despite the hot temperature. Overheating, normal coolant levels, no heat.
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I have a honda civic 2000 and recently I noticed that it overheat only after exiting a long drive on highway. The car does not overheat for my normal daily commutes (within the city).
I tried the following:
- Checked coolant on bot radiator and overflow tank.
- Changed the thermostat- No leak on the ground in the garage where I parked the car overnight
- No noise to lead to an eventual issue with water pump
- Radiator fan is kicking ok
- Had a mechanic do the chemical test for the head gasket: negatif
- Found that there is air in the cooling system:tried to burp the system 2 times but air is still in the coolant system. Not sure where its coming from !!?? Might be that this could be causing the overheating ?
- Found a crack on the manifold and changed the manifold then tried to get rid of the air (burping the system): no success. The air is still not removed completely.
- Changed the radiator cap.
What can I do next to diagnose the overheating condition that happens only after exiting long drive highway?
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I have a 2000 Excursion with a 7.3 diesel. I have 245k on the clock. Engine and transmission are original. I have an overheating issue when I am towing and pull a long grade. It's not as bad as it was before but it still happens and I am tired of turning off the AC and putting the heaters on full blast to support cooling when it is 90 plus outside. A list of things that I have done so far.
Newer water pump and thermostat.
New tensioner.
Installed a new trans pan with about 7-8 larger capacity.
Used some magic juju juice to clean out colling system.
Installed a coolant filter. I am on my 5th filter. The first one didn't last 500 miles before getting stopped up.
Switch to Delo ELC.
I recently had the upper hose off and when I looked inside, I didn't see any scale or build up. I also read about some of the trucks of that vintage didn't get a trans cooler. When I looked, I saw a cooler but it doesn't look like it is plumbed through the radiator.
I want to install a large trans cooler. I don't want to replace the radiator just for the sake of replacing it. Also, look at the pic of the water pump with the thermostat sitting in it. Is the thermostat supposed to be resting all the way down? I keep wondering about that.
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Noticing that my drivers seat is taking a long time to heat up. I usually warm up the car in the winter, and turn on the seat heater. The seat is still cold when I get in, and does not heat up until I go a few miles. Have to check and see if the passenger is doing the same thing.
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I'm thinking this is probably just the way they are, but I don't understand why........... I have a '12 F250 supercab 6.7 FX4.... truck is an XL, no supplemental heat or anything. If it sits outside over night, and I go out in the morning after say a 35-40 degree night, start it up and let it run 10-15 min then drive 5 miles down the road to town, both temp gauges are still pegged on the cold side, and there's virtually no heat blowing on the defrost. Even if it sits in the heated garage over night, same temp, same drive to town in the morning, same lack of any heat.
My old 2010 V10 that I traded for the 6.7, and my current 09 5.4 are the exact opposite of this. I can start the 5.4 cold, leave within a minute or two, and be making some heat within a few minutes. By the time I get to town, everything is well in the normal range, and I'm turning the heater down cuz it's too hot. Even once the 6.7 is fully warmed up the heater doesn't seem to make near the heat that the gas trucks do. I love the 6.7, I just find this a bit odd. Am I missing something, or is this just the way they all are?
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I have a 1988 Dodge pickup 1500 with a 5,9 gas engine. It used to pop right over all the time. Now, in the morning, I have to crank it forever until it starts, and if it sits for 1 hour or more, same thing (have to crank for a long time). It is my understanding there is a valve called a one day valve that holds pressure on the gas line. Is it possible this valve is not working properly? And if so, do I have to replace fuel pump to fix problem? once started it starts up with no problem until it sits for hour or more then hard to start.
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My 2010 Ford Explorer experienced a radiator leak between the radiator and the plastic tank on the top, so I replaced that, we were still not experiencing any heat while driving it. I watched a couple of videos on how to "burp" the system, to no avail.
Next I replaced the thermostat, and "burped" it again, still no heat, so I drained and flushed the system yet again and still no heat. What else is there to check? I have the Haynes manual and did the flush and fill the way the book said and still have no heat I am about to lose my mind.
The blend doors sound like they are opening. They are not clicking like they are broken.
The heater is on full the entire time, I have not rotated the dial since I started this.
I unplugged one of the hoses on the heater core and blew into it, the hose was bone dry and I blew into the end of the hose and fluid came out of the cabin side metal tube. I also plugged a water hose into the tube and ran water through it to make sure it wasn't clogged, it is not. Front and rear heater cores.
Here is everything thing I have done from the start:
- Replaced Radiator.
- Replaced Thermostat.
- Drain and flush and re-service.
- Checked for leaks out of the water pump weep hole (none) and operation of pump, the upper hose gets hot and I feel water go through it when the thermostat opens.
- Check the radiator cap for pressure, it opens at 20psi and hold between 17-19psi. Replaced radiator cap anyway.
- Removed supply hose and ran coolant to purge trapped air.
- Ran water through the supply and return hoses on the heater core. On the front and rear.Check operation of heater control valve, works.
- Turned vehicle on while watching the exhaust pipe, a small amount of water on initial start up in the morning but no smoke.
Problems still occurring:
-Drive vehicle it over heats but returns to normal at idle I also get the coolant light that extinguishes when the car returns to idle. Even though it says its overheating the car has not pushed coolant into the expansion tank.
- The car will not take any more coolant, and only overheats after the fan comes on. And still no heat.
Should add, 4.0L engine, no oil in water after flush and the engine oil looks like engine oil not milky. Next step was a water pump???
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i was on my way to work today -10-degree weather and i noticed my temp. the gauge was slightly above 190, and it steadily climbed into the red approx. 10 mins while going down the highway, all the while my heat was blowing extremely hot so i pulled over to let it cool down. I was able to get back home without it overheating too much (not in the red).
So i let it cool and refilled coolant 50/50 g12 due to loss from evaporation, now its just blowing cold air from vents prior to this (last couple months) it wouldn't reach 190 it was slightly below my question is does this sound like the thermostat or something worse its almost like its been sticking open and then all of a sudden it was stuck shut I'm not sure but I'm gonna change thermostat tomorrow .
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I have a 2014 TDI with 86,000 miles on it. Several weeks ago I had the heater core changed and since then the car has ran hot twice when what appears to be a regen. The heat has stopped working again. When it is running hot, I can smell a strong odor of ammonia. It does not run hot all the time. Last time it ran hot, I felt the radiator and it was not hot all over. The passenger side hose was not hot and the top of the radiator was not hot. I have taken it to the dealership several times.
At first they said that they thought that the thermostat needed changing. I declined and said that it would run hot all the time with a bad thermostat. The last time I brought it to the dealer - I stated that I think the radiator is clogged. Now they are indicating that they want to change the radiator, thermostat, heater core (again), and flush the system. The system has been pressure tested and no leaks have been found. The tech indicated that it ran hot while in the shop with the A/C on and it boiled over.
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A few weeks ago my car started overheating and blowing cold air while I was on the highway. I took it to my mechanic and he found that the radiator was leaking. Two weeks later the car was overheating and the heater was blowing cold air when I was on the highway. I had it towed to the same mechanic and the car wouldn't overheat nor would it blow cold air. He drove it all around and on the highway but couldn't get the problems I was having to occur. Now I have intermittent heat. Sometimes I will start the car and it will take 20+ minutes for the heat to blow warm air. Other times the heat works fine for a while and then starts blowing cold air. Usually when it starts blowing cold air I begin to smell a sweet odor, possibly coolant. It hasn't overheated again, but I have stayed off the highway.
I just had the thermostat changed, and the upper radiator hose warms up quickly. When the heater is blowing cold air, one or both of the hoses connecting to the heater core do not warm up. Sometimes it's both hoses, other times the hose going in is hot but the other hose is cool. My mechanic seems to think that the head gasket is leaking air into the system, and that the air is preventing the coolant/water from being properly transported throughout the car. He did a pressure test to see if it was the head gasket when I brought the car in but it wasn't conclusive. Does it sound like a head gasket leak, or could it be a blocked heater core, or a weak water pump? So far I haven't noticed any coolant leaks, but I could be missing something.
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The gas gauge on my 2008 does not seem accurate. I had three bars left the other day and when I filled up it took 6.5 gallons. Normally with three bars it only takes 5.5 gallons. Also, it stays on "full" (all bars) a long time.
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My 2003 Dodge Neon started overheating. We replaced the thermostat, temperature sending unit, flushed the radiator, checked for blockages, cleaned the radiator, changed the head gasket and water pump.It can run for about 10-15 minutes driving or 30 minutes idling before it overheats. The fans will kick on. The thermostat opens up. Pressure builds up on the radiator hose. When it gets hot, it boils back into the reservoir.I've been careful not to let it get into the red since the head gasket change.We sent the head off and had it planed.
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I have a 2005 Durango, ~142k miles. The end of May, I had to get the transmission solenoid replaced, which may not be relevant. About 10 days later, the car started overheating when idling. There was a crack on the radiator neck, by the cap, and I had to get the radiator replaced, and the thermostat. The shop said the fan was wobbling, and they replaced the fan clutch as well. The fan was a lot louder than it had been, the mechanic said he had put in a higher performance fan in and maybe that was why, and offered to put in a lower performance one if I wanted. I declined.
Six weeks later, it started overheating while idling again. I brought it back, and the water pump was out. By now I was checking the temperature gauge constantly when idling, and it never quite hit the center until suddenly after 4 weeks, then it suddenly started overheating while idling again. I brought it back again, and they couldn't find any problem except he said the radiator was about a cup low, and maybe there had been an air bubble.
I've been constantly checking the temperature gauge since, and it once again never quite hit middle until 2 days ago, and now suddenly it's overheating when idling. I checked the coolant level after it had been sitting for a couple hours (and I had only driven it for about 10 minutes so far this morning, before that. I'm afraid there is a blown head gasket or something, but if so, why would it run so well for an extended period, and then suddenly start overheating again, twice now? They haven't done a compression check.
In case this is relevant, every few days the car will just stall out when coming to a stop, and sometimes the idle seems rough.
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I have a '95 Dodge Stealth Twin Turbo that wants to overheat when running the a/c...have repaired electrical fans, replaced water pump, flushed the cooling system to no avail. Looking for info about waterless coolants?
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