Chevrolet - 3500 :: Slow Coolant Leak Above Rear Transaxle
Mar 26, 2011
I have a small leak of greenish fluid (appears to be coolant) coming from a silver/aluminum tube that runs the length of my van, just above the left rear transaxle. The leak seems to be in the tube, near a support that keeps the tubing flush against the undercarriage. It is a slow leak, but it is dripping onto the transaxle/transfer case, and is beginning to leave a small puddle on my driveway -- gets a little worse each time I drive. I haven't noticed much loss of coolant in the reservoir, so not sure what this is and how to fix it. I have a photo. I am thinking the tubing might be part of the heating system.
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Van has 144k miles on it. It's been well maintained (see my other posts). I have had it since new (7 miles). The LIM was done preventively at about 75k miles (5 years ago).
Two to three years ago it started using/leaking etc coolant at a very slow rate. I would estimate somewhere in the 8-10 fl oz per 3-4 month range. As time has gone on it has been progressively using more. Now it is about 12-14 fl oz in about a month or 6 weeks. My "low coolant" indicator came on the other night. It had been a while since I added any coolant mix. 3-4 months anyway. It took about 1/2 gallon (US). There has been no "real" visible leak,up to now. I noticed yesterday when I was under it doing an oil change, that there was a "film" on the bottom of the trans pan. I followed the trail as best I could and it led me to the rear of the engine near the drivers front wheel. It was a small drop of coolant. (I tasted it). Don't try this at home... From the top of the engine looking in, I followed the upper radiator hose to the thermostat housing "pipe". It is very difficult to see in there. I took a few pix. [URL] ....
It looks like there is a little pool of coolant sitting near or under the thermostat housing that pools on top of where the transaxle bell housing meets the engine block. It's very hard to to see in the pix. Some of what looks to be damp, is actually shadow. This pool I believe runs down the back of the engine/trans, and then is blown on top the trans pan and undercarriage.
The van runs great, I want to keep it for the next 9 years. There is no coolant in the oil, or oil in the coolant. Unless the fix is fairly easy, the leak is still small enough that I am not going to bother with it until it becomes a large leak. The car runs cool even in the hot summer pulling a load. The only issue is the leak and that I have to add coolant every once in a while.
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My wife has a 2006 Touareg V6.
Noticed a coolant leak a week ago, refilled with coolant, and as of today the coolant warning has not come back, so whatever it is must be a very slow leak. Today I took the opportunity with the unseasonable warmth in Chicagoland to investigate.
Got the T-reg up on jacks and belly pan removed, ran the engine while inspecting the bay, didn't see anything.
After I shut the engine off, however, I noticed a small but somewhat steady dripping coming from roughly the middle of the front of the engine block.
Pulled the plastic cover off one of the pulleys, part # reads: 022 121 341. I couldn't find a match anywhere online, but I got tons of results for 022 121 011, which is the water pump.
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My son has a 2007 sonata v6, daughter has one too. Both have about 130K miles, and both developed slow coolant drip leaks. I took off both hoses on both cars, cleaned the crud from the housings and replaced with new hoses and clamps. Problems solved in daughter's car, not so in sons car. I note that it looks like the area below the thermostat housing is wet - and thought that was from the crud/hose situation. But he is still losing coolant, even more now that its getting colder at night, and I's sure its not the hose connection anymore.
The car will generally NOT leak when hot, only as/when it cools off. I.e. puddle in the morning situation.
Looking at the diagrams, it looks like that "housing" is really a connection to the crossover pipe, heater hoses, other stuff (throttle body heat) and also contains what looks like a temp sensor.
I suppose any of these are possible, but my first thought was either a leaky temp sensor (or possibly loose) or something more serious like a cracked housing, leaking o-ring, gasket etc.
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I have a 04" GLI and I was thinking about doing a coolant flush. Looks like I have a slow leak. I was wondering where should I look in order to stop the leak. Put some coolant in about a month ago and now the coolant light is back on. Every morning when I pull out of my driveway there is a small leak under the driver side of my car. Is this an easy fix? If I do decide to do the coolant flush myself what is the recommended coolant replacement?
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I have a 2006 F-150 XL with the 4.2 V6, auto that has a slow coolant leak that I cannot find.
I bought the truck this spring, 190K, drives good, but it leaks coolant. I have added probably 3 gallons of water this summer, this does not bode well for winter.
I can't see any wet spots or steam, but do smell anti-freeze occasionally from outside the cab.
I don't really want to try easter-egging the repair (replacing things that might fix it).
How to find the leak? Or should I just use some form of stop leak.
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2008 Highlander - super slow coolant leak. Dealer can't find it via pressure test. Never trips sensor, but after 6 months or so, the heater doesn't work well unless turning to the left. Has happened since new, but now Just out of warranty. Dealer has recorded two pressure tests and leak, but I'm wondering what to do.
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On my 1.8t jetta she is leaking coolant slowly. Just started when it got cold out. It is dripping down the oil pan right down the center. It is falling off the oil drain plug. Was reading that it could be the water pump leaking but then it wouldn't be in the center of the pan. Got it jacked up now so here are some pics.
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New truck to me. Truck was advertised with a slow coolant leak. Figured I would trace the leak down and get it repaired no issues. Anyway, working on it this evening I take a close look around the oil filler area and notice the dreaded milkshake color.
I drained the oil out of the truck and the oil actually came out nice and black. Is the headgasket the only area that would cause the oil/coolant mixture? Supposedly the truck has never been overheated.
At any rate, on to find articles on how to pull apart a 4.6L Triton head. I'll see if I'm up to this challenge.
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One last issue with my 2000 B3000 3.0L. The leak seems to be on the left (passenger) side of the water pump very near where the bottom radiator hose connects to it. I can't find any loose bolts. It does not leak while driving the truck or soon after. It has to sit for several hours or overnight before it shows up. There are usually 3 or 4 wet spots where it drips from the water pump to the frame to the driveway. It is small enough that I only have to fill up my coolant tank every 1 or 2 months. Could this just be a small gasket leak? It's been happening for about a year or so I think. I replaced the radiator about 2 years ago. I've been expecting it to get worse or bust loose and have been checking it very often. I've never seen one not leak while running like this-has me puzzled.
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Coming out the piece right behind the oil reservoir out a little hole whats this leak coming from...
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I have a 2005 Prius with 110,000 mi. Sometimes when I accelerate the ICE (gas engine) simply spins (as if the clutch was slipping in a convention car) and there is little acceleration and the gas engine doesn't shut off when coasting or braking as it always has in the past. The battery screen shows it is not charging when this happens and is at 1 bar (purple). then sometimes the hybrid battery gauge will go from 1 bar to fully charged (green) in under a minute or 2 and then show discharging just as fast which isn't possible. It goes away after a restart sometimes but then happens again soon. Is it the TP sensor, Hybrid battery computer or ? I have gotten all kinds of codes including P0a93, P0a80, P1400, P040a.
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My mothers 95 blazer LS coolant is disappearing. A friend said if it's not on the ground than it's in the engine somewhere. oil pan search looked coffee looking?
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I found during an oil change that there is coolant in my oil, I had suspicions of this because of having to add coolant more than I should of had to. There is probably either a crack in my block, head gasket or intake manifold, my question is how can I tell which. I figure that if I preform a compression check it will tell me that I have a cracked block and or a cracked head gasket, what will tell me if I breeched my intake manifold.
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1999 Camaro V6 125K miles. Occasionally overheats. No noticeable coolant leak. Was pressure tested and passed. Mechanic suggested new radiator cap. New cap installed and was fine for a while then overheated again and problem seems to have intensified. Will a compression test reveal anything regarding this problem?
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Car is a 1995 Chevy Cavlier LS. 2.2L engine, about 127,000 miles. Has a minor coolant leak (freeze-out plug) and a slow oil leak (if I forget to check the level, the oil light comes on about 3000 miles after an oil change). It's beat up, had a few years of poor maintenance (but limited use) before I got it from a relative 3-4 years ago. I do oil changes at 3-5k miles, keeping fluids topped off, and try to remember to change the air filter regularly (which reminds me, I think I'm due for one).
Problem history: About 7 months ago, I had problems with the battery going dead. Some of it related to stupid mistakes--lights on or door ajar. Battery was old, parts store suggested replacing it. New battery fixed the issue. About 2 weeks ago, I tried to start it and ran into the same problem after the car hadn't been run for 2+ days. Dash lights come on, the key-in/startup bell chimes, but turning the key to start leads to fast clicking from the engine and the chime sounding rapidly. I forget if it made any other sounds at the time. Attempting to jump it didn't work, but the other car had an old battery and the cables were kindof cheap.
Called roadside, and he was able to jump it. He suggested taking the battery to Advance, so we did that.Advance charged the battery, tested it, said it was fine. Suggested I bring the car over and they could test to see if it's charging the battery. I did that, and it seemed ok. Engine was a little rough, possibly spark plugs, but I haven't checked that out yet. I figured I had done something stupid again and left a door ajar or the headlights on.Today, same problem again. I last drove it 2-3 days ago. Headlights were definitely off. It's possibly the driver door was ajar causing the dome light to stay on, but I doubt it. Same noises when I turn the key as before, I hear the sound of the engine trying to start once (I think that it's trying to turn over), but it won't start. Haven't had a chance to try and jump it yet.
Possibly relevant: Back in the spring, it wouldn't start one day, but the engine wouldn't do anything, no clicking etc. Neutral safety switch was loose/misaligned. Mechanic was able to make a small adjustment, and it's been fine.
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I just got a 2006 Prius and I brought to Toyota dealer to do a regular oil change. After that, been told that I'll need a Inverter Coolant and Transaxle fluid change in next maintenance point.
This prius already has 111,000 mile now.
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I fixed a slow tire leak today and in the process I examined the rear suspension closely. I had one rear corner jacked up and could easily see the difference in position of both rear wheels compared to the frame. The difference was only in the range of 1 inch. Mind you one wheel was in the air, and the other was bearing the doubled weight.
I also examined the substantial torsion bar with it's C-shaped cross-section and closed edges. I don't see how any additional anti-sway bars could benefit this very stiff arrangement.
I know that members that installed rear anti-sway bars raved about performance increase.
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My 07 Prius is leaking transaxel fluid into the inverter cooling system. Transaxel fluid is sweating through the inverter coolant hoses. Before my taking ownership of this vehicle, it had previously been in a front end collision (that’s a whole other story). Anyhow – if I replace the radiator, should that take care of this problem? Are there any other ways these two cooling fluids could become cross contaminated?
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I am getting a light clicking from my rear Axel when coasting at a slow speed. It could be clicking at any speed but my car is to loud to hear it going down the road. I don't have more details than this. What to look for ?
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I wait for the glow plug to stop before attempting to start. Then it's like Aaron Tippin sings, "sometimes she runs, sometimes she don't". It turns over fine. When it's running, it runs good. But most times it won't start. The fuel is being stopped somewhere. The in tank pump is working..I can hear it when I turn on the key. What else can I check?
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