Ford F-150 - 1997-2003 :: 2002 - Coolant Leak On Driver Side Front Right Near The Thermostat Housing
Dec 17, 2012
I'm trying to figure where the coolant leak is. Appears to originate on the driver's side front, right near the thermostat housing. Since the engine tilts back the entire drivers side is wet. The thermostat gasket appears to be OK, but it does have a lot of miles on it.
If it's not the thermostat then can coolant leak from the cross over tube. And is the cross over removable without taking off the intake. There appears to be a bolt coming up from underneath on the passenger side.
Also, does coolant flow through this plastic intake. If it does, then the leak could be some where else, if not, then it's probably the thermostat.
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I have a coolant leak coming from I am assuming the thermostat housing or thermostat. My question is, is there a gasket behind this that I am assuming is bad or is the thermostat bad.
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I have a 1990 F-150 w/351 that I knew had a coolant leak at the back of the engine when I bought. It's a tinker around truck, something for me to play with.
I've traced the leak back to a metal tube/pipe that sticks out of the engine compartment just below the AC housing. I cannot find anything in the Haynes manual or a diagram on the intertron that shows what this is and if it should have a hose on it or...?
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My serp belt started squealing so I pulled the thermostat housing to inspect the rubber gasket. It looked OK, but I cleaned up both surfaces and replaced with a new gasket, and put it back together. The housing was replaced just a couple months ago along with new hoses. It was not corroded and OK to reuse.
Started the truck up and saw a slowish/steady drip of red Cat ELC dripping on the driveway. Opened the hood up again and carefully inspected around the thermostat housing - no coolant is leaking there.
I did notice the same slow/steady drip coming from just behind and beneath the thermostat housing. See in pic, this is where it is dripping. One other question, what is this plug for on the side of the water pump?
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I set out to do a coolant flush but ran into an increasing number of problems. When I went to replace the thermostat I discovered one of the three bolts would not come out due to the inside thread on the thermostat housing being stripped. I purchased a brand new housing and O-ring.
When I reinstalled the thermostat (also Motorcraft brand) with the above O-ring and attached all the hoses I had a severe leak between the thermostat housing and the intake hose connecter. I diagnosed the problem as the O-ring slipping off of the lip or ledge inside the thermostat housing and not sealing all the way around.
The Motorcraft O-ring seemed like the diameter was too big for the interior lip of the thermostat housing because the ring would pop up on one side whenever I tried to fully seat it on the interior lip. I went to AutoZone and purchased an orange Duralast O-ring, and while it seemed to be a little smaller diameter than the Motorcraft it too slipped off when I tightened down the housing.
I have tried everything, and every time I tightened down the housing I did it very slowly and carefully doing an 1/4 turn at a time with the three bolts but still the O-ring would slip off.
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I have a 95 skylark 4 cylinder, i have what appears to be a coolant leak from the thermostat housing and i also have coolant mixing with my oil. Can the leak from the housing cause the coolant to mix with the oil? If not what else could be the issue?
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Only when running heat or defrost, coolant leak looks like it's coming out of the bell housing. I have a supercharger so very difficult to see behind motor, but with inspection camera, heater hose lines look dry. firewall looks dry. No coolant in cab. No steam on windows or smell. Pretty sure not casting/ freeze plugs because absolutely no leaking with heat off. Can run for days with no loss, then turn on heat and within minutes/ seconds coolant puddling in driveway. Is the hose that runs through valley pressurized only when heat is on? I saw a few older threads but as far as I could tell none specified heat on/ heat off conditions. Just started problem after doing some other work, hoses were off radiator and intercooler, replaced radiator. None of those connections are the culprit.
98 F150 Lariat 1900 TVS S/C Chiller Killer I/C 19PSI Snow performance WMI
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My '02 F150 just developed an oil leak. It appears to be coming from the passenger side front. I'm just assuming here, but could it more than likely be the timing cover? I'm 150 miles from home and I'm debating on getting the timing cover gasket on my way home tomorrow. Also, if it is the timing cover, what other gaskets should I replace? Pretty sure the water pump oring.
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My explorer with 4.0 sohc is starting to leak fluid out of the thermostat housing. How hard is this to do and what can I expect in cost to do it myself. I dont drive this explorer but about 2 miles each way to work as I live on a military post. I have been putting it off ( just keep adding coolant and water) every couple of days. I have noticed that the engine temp doesnt not get up to half way like it use too. Maybe 1/4 of the way on the gauge now. I have always flushed coolant system very two years. It is starting to get some rush in the overflow bottle now too. Other then that she runs good and no other engine issues. She does have a 136k on her.
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My truck just passed the 3 year/36k by 2 days! I got it on 8/4/10 but it only has 27,000 miles of course I just found a puddle of coolant under the right front drivers side. After a little reading, I guess this is common. Should I push for Ford to fix it or get an extended warranty and turn it in on that or... Aftermarket yet that isn't half plastic like this stock POS?
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My '02 F150 180k X-cab with the 5.4L is leaking coolant when it is shut off. Its just pouring right out.It looks like it's coming from top of the trans and around the firewall area. I had to replace a drain plug already.. the one behind starter ..its not leaking.
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So I noticed when I check the oil, there is a very small amount of water at the end of the dipstick and also water mixing with oil around the oil cap. It is not much water at all, but my first thought was head gasket. I was loosing very small amounts of coolant, but found a small leak at the thermostat housing....The truck runs fine, idles fine, no bubbles coming from the radiator at startup, no moisture from exhaust. It seems to be using more oil than normal, but I drive it 100 miles a day still and no major issues other than the perplexing bit of water and oil mixing. Could it be a tiny head gasket leak? What else would cause the water and oil to come together.
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I have a 2003 Expedition with a coolant leak on the front R/H side of the truck. I do not see any coolent lines on that side of the truck and the leak seems to be running off of the A/C compressor. I notice a couple of drops about the size of a dime about once a week in my drive way since x-mass and have NOT had to add any coolant. I was getting ready to do a flush and fill but now have concerns that it may have a bad head or head gasket. The truck has 84000 miles on it and never has been overheated.
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The truck has been a dream for several months and I had a coolant leak at the thermostat outlet. Changed the fitting and thermostat and sealed with lots of blue monkey snot. It's been perfect for a couple months but a week ago it started leaking again. Exactly the same as last time. I cleaned the mating surface of the water pump with a plastic scraper to remove the old sealer and then finished it with fine scotch brite. I looked at several parts breakdowns and none of them showed a gasket.......
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I have a leak on the right side of the cross over pipe. I removed one long bolt from the right side and two long bolts from the left side that go through the thermostat housing, and three bolts from the back of the alternator, but the pipe doesn't seem to want to move. I don't want to break anything.
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Finally got around to replacing my Thermostat because the DIY here made it look so much easier than removing the alternator and such. Did everything exactly as described and after assembling everything with the new t-stat and O-ring I am getting a constant leak from the housing. I tried removing everything and reassembling...all the bolts are tight. Plastic housing isn't cracked and seems to be in great shape. Everything lines up properly but coolant is just running out of the bottom of the housing. Am I missing some magical trick here?
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Bought a 04 GLI had the bad engine, had the engine installed sat at the shop for nearly a year. Towed car to my house to finish it and now I am running into their lack of knowledge and fixing their crap. Now the current issue...On the thermostat housing, a nipple that comes off the side has nothing connected and leaking coolant.
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I have a '02 7.3 that has developed a severe oil leak in what seems to be a small line that runs from the drivers side head to the HPOP on the passengers side.
it seems to be leaking at the braket that secures it to the head on the drivers side.
what is this line called and where can i find one A.S.A.P?
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I have a 2003 Escape Limited 4WD with approx 163K on the clock. It developed a tranny leak from the front driver's side axle. The seal is new and in good shape as I just replaced the axle and seal a few weeks ago. (I checked the shaft size and surface finish of the axle and it is in spec.)
I just removed the axle tonight and discovered that the problem seems to be the bushing just inboard of the seal in the tranny. The axle has movement up and down when inserted. (Not good!) This is allowing the fluid to leak from the seal.
Here are my questions. Is this a simple DIY fix using a slide hammer type of puller (or similar), or is it time to take it to a tranny shop. I can not seem to find a replacement part listed anywhere.
Also, with this much mileage, should I have the tranny reworked as a precaution if this repair requires dis-assembly or should I just address the leak and think about dumping it? I would prefer to keep it as my kids are now driving age and this is primarily their vehicle. (It has been a great little truck!)
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2003 F250 7.3... I noticed a water leak dripping down onto passenger side front leaf spring. I saw this before but attributed it to the AC (which kicks butt) but haven't used the AC. No scent to the clear fluid, temps all look good. Running fine. Where does the AC discharge go? Could AC be on (not on AC but set in blue zone on dial)? Reservoir looks ok but could e small volume of drips.
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Two weeks ago I was driving home from work and my heat stopped working. I pulled over and saw coolant dripping badly out of the bottom of my truck. I popped the hood and sure enough, coolant was bubbling out of the front passenger side of the intake. I took it to a shop to do the work (quoted at 500-550 out the door with a dorman intake). A week goes by and I get a call from the shop, "After two Dorman Intakes, the truck is not running right", what it could be.
The truck has 367k on it (not sure if original motor). Yesterday I get a call from the owner, " we put the original intake back on and fixed the leak with jb weld. The truck still runs bad. They claim they didnt do anything wrong and will not take any blame for ruining my engine. (Keep in mind the truck ran PERFECT when I took it in there). The truck doesnt throw any codes and they are at a loss of what could have happened. They put in 8 new plugs and 2 coils that they broke while in the process of removing the intake. F150 5.4 ...
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