Explorer :: 2003 With 4.0 Engine - Coolant Loss And Smell But No Leakage
Jun 24, 2012
I have an 03 Explorer with the 4.0 engine. There is a strong smell of coolant and the reservoir does go down slightly once a week or so. There is No Leak whatsoever that I see, I have checked under the hood, under the vehicle, under the dash, everywhere...nothing. Where is the coolant going? This seems to be a common problem, I work at a quick lube and almost all of these explorers are low on coolant when they come in.
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So, whenever I park the car after a trip it always leaks fluid when the A/C was on which I know is normal but now it seems to leak a lot more and I'm wondering if that's where all my coolant goes. Where exactly does it drip from from the A/C? Is that somewhere in the cowl?
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I have a loss of coolant, and I can smell it as I drive. I looked under the car today every hose is dry to the cooling system, so I thought look where the heater core is, everything is dry there too. No sign of Head gasket leak either. I just can still smell it, and still losing some but it is very little. What should I look for next?
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I am trying to figure out the problem with my 2002 ford 7.3 Engine.
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It has a lost of engine coolant. The oil is 100% clean with no signs of Coolant. No chocolate milk effect. Also it makes a Odd thumping noise at idle. I think it is coming from the Exhaust Manifold.
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So I have a 2003 6.0 king ranch w/ 164k on it.. EGR delete, high pressure oil pump, coolant filter and SCT tuning. A couple months back I had a coolant flush done. After about a week the coolant tank was empty.. Engine heated up due to loss of coolant.. I flushed system again and put ford gold coolant back into the tank. (5 gallons). A couple days later and coolant was very low and engine heated up?? There are no signs of leaks anywhere...Added water and it cooled back down. I'm lost. EGR is deleted but no studs done.....
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I have a 2003 Chevy Malibu, V6, 3.1, auto, 140k miles. Car started out with code 0420 with no noticeable symptoms, but then added code 0303 (miss fire cyl #3) with loud knock (mostly after warmup) and loss of power under load. Now internal loss of coolant (no puddles or external drips). Changed plugs and wires - no change - all plugs looked good with no sign of contamination. Questions - if this is a valve/piston/lifter problem (which would explain the knock, miss-fire and loss of power), why would I get the loss in coolant? If the loss of coolant is fouling plug #3 (which would explain the coolant loss, miss fire and loss of power), could that give me the loud knocking? I don't see how a valve/piston/lifter issue would cause a leak in coolant but I also don't see how a coolant leak into cyl #3 would give me such a loud knock. Do I have two different problems? If it is a leak into cyl #3, is there any way to tell if it is the intake manifold gasket (which leaked before and was replaced five-six years ago and which I could do again if I had to) or a blown head gasket (which I don't think I could fix or afford to get fixed)? Engine will occasionally get hot (but not overheat).
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Ave an 02 Camry 4 Cly
Noticed small puddle of coolant under the car - then noticed overflow empty and radiator a little low on fluid. Noted some coolant below the thermostat.
After filling back to proper levels, ran engine for a while with no apparent leaking. Took a couple of short trips and inspected after each trip and no leaking noticed.
Checked several hours later and noted coolant below thermostat housing and on ground. After a couple more trip noted coolant level dropping again.
What would cause fluid to leak after engine shut down? Could be coming from another location, but my attention is on the thermostat at present.
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I got a 99 v6 passat and it looks like I'm leaking coolant from the back of the engine, like under the TB.
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I'm sitting at my Toyota dealer where I bought the car 3 weeks ago. My car is in because it needs to have the engine coolant pump replaced due to a leak. Is this a common fix for the gen 2 Prius? Fortunately this is getting covered under warranty.
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My 97 Concorde 3.5 w/ 223k developed a second coolant leak from the front of the engine. Using a pressure tester I found it was leaking from the water pump housing o-ring (pass side) and also the o-ring behind the water pump itself. I did this exact repair 3 years ago including new pump! I do everything meticulously so this has me a bit frustrated. I've got it all torn down and cleaned up real nice, except there seems to be a lot of pitting in the o-ring grooves on the back of the water pump housing, mainly the large one.Can I use high temp RTV oil-resistant sealant in the grooves and then put the new O-rings in to make sure they don't leak from the pitting?
Also, I found the cam thrust plates to have hard, cracked seals.
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Well, I decided to take on the dreaded task of replacing the lower manifold intake gaskets and put in new isolator bolts. It was a major undertaking, and when I finally finished the oil change and fired up the car, it sounded fine. Then I checked under the hood.
I saw coolant spurting out the side of one of the hose connections that I had to take off and put back on. I thought the gasket on it looked pretty worn, but wasn't expecting this!
Unfortunately I don't know the name of the hose connection to pick up a gasket at the store ... it's the larger lower hose that is bolted on to the lower intake, not the hose slightly above it that has the plastic clips.
What is the name of this hose connection so I can try and find one at the store? It's a 2003 Windstar model.
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Son in law just bought a 2002 Explorer with the 4.0. Looks in pretty good shape and overall I don't think he got a bad deal. However....after a test drive I noticed an antifreeze smell. Got to poking around and it appears to be leaking directly below the thermostat housing and that whole manifold for lack of a better word. It's a bugger to get in there and really see what's leaking...doesn't appear to be any hoses but given the angle can't be really sure. I'm new to the Explorer and the 4.0. Is this anything peculiar to the Explorer/4.0? A known part problem? Something far worse?
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On Sunday my son was driving my wife's '03 Passat GLX 2.8 4motion station wagon when he received a "stop engine" warning and noted the temp was climbing past 250. Good lad that he is he stopped immediately and noted much steam and coolant originating at the rear of the engine. My hope is that it's just a hose since there is no coolant or smell in the interior (just went through the nightmare of a heater core on my '96 Jetta!) We had it flatbedded to our home but I haven't had time to make a further investigation and was hoping for some insight from those here as to how I should proceed in diagnosing/repairing this issue.
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We have a 2010 Prius with ~120k miles and a supposed oil leak; about half a quart for the last 500 miles. Ongoing for some unknown period of time. I haven't seen any oil on the ground for the past week. Furthermore, the engine coolant is very low. The dealer believes the "seepage" is due to head gasket, which would cost $2400 to repair.
This isn't my car (my gen 2 runs great), but it reminds me of my beloved 1996 Subaru which had to be let go because of an expensive head gasket and emissions failure. We expected the Toyota engine to last much longer. So far, the Prius hasn't thrown any check engine lights. Is this unusual? Any signs I can look for that might confirm the head gasket leak or suggest a less expensive diagnosis?
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I have a 2003 Honda Civic and the engine temperature will sporadically raise above normal. Using the heat (even a slight mixture, anything but full cold) seems to worsen the problem.
I've discovered that the coolant is almost always low in these situations, and so I've just been filling the coolant up in the morning before I start the car, but it usually takes about half a liter. There are no puddles or wet spots in the garage or inside the cabin, and I've had the radiator put under pressure for a weekend and it maintained operating pressure, so it seems that there is no leak.
I've had the water pump, timing belt, spark plugs, and O2 sensors replaced. It's been like this for about a year, but it's more frequent in the winter when I use the heat more. Where is my coolant going?
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I can see no sign of oil leakage or oil burning. The car runs great, about 159M miles. Yet, it goes through 4 qts of oil every 1000 miles. If you don't check it frequently, it suddenly is 'dry' and takes several quarts to bring back on the stick to full. There is a little puff when first starting of light smoke, then nothing out of the ordinary.
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I have an 1998 F150 4.6L V8 that is using coolant. I recently replaced the radiator because of a leak in the lower right side. Vehicle has about 190000 miles on it. The vehicle is using some coolant, but no apparent leaks. When I warmed up the engine after replacing the radiator, liquid dripped out of the back of the muffler - rusted out.
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2002 7.3, losing coolant. Occasional whiff of antifreeze, not in oil. I use my truck to tow a food trailer that's only about 4500lbs, some highway, most city driving. 173K clicks, bout Jan 2016 with 130K, first time this has happened...
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Loss of coolant! I have a 2003 6.0 diesel with 200,000 miles. I put in a new oil cooler and ipr egr delete two years ago also flush the system and added a coolant filter. I filed it back up with the red antifreeze. Now the problem I have never lost any coolant since then and my deltas are about 5 degrees. But the other day I pulled a heavy load the first one since I did the repairs (coolant got up to 220 degrees and would drop back down) when I got home the coolant tank was about a inch low. I let the truck sit about 3 hours and checked it again and it was back at the full mark. Drove it the next day and it's back low about a inch, Any clue what's going on.
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2003 Explorer Sport, 4.0 L, 84K miles. Car just fell out of extended warranty and has been serviced exclusively by the dealer.
While driving, I experienced a sudden bog down and inability to travel faster than 20 - 25 MPH. The more pedal you give, the less power. In neutral, free revs will not go above 3000 RPM at full pedal and will rise and fall between 2000 - 3000 RPM. The next day all is normal again. This happened twice now and I am not sure why. No CEL, no stored codes.
Plenty of pressure (felt by hand only) out the tail pipe except when fluctuating during free revs. There doesn't appear to be any vacuum leaks. What I can check to correct this? Could it be bad fuel or water in fuel?
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I have an 01 supercab. 5.4 Triton 135k. I have begun to smell coolant the last couple of days. Have seen nothing leaking and truck doesn't run hot.
Will investigate more this weekend. Where to start looking for this. It has to be leaking somewhere. Windows don't fog and the smell is there all the time. I live in florida so don't use much heat.
Not the heater core. Heat works fine and no smell from the vents.
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