Ford F-150 - 1997-2003 :: Engine Oil In Coolant?
Nov 25, 2013
97 f150 4x4 4.6L V8 196XXX miles
So last oil change I noticed I was missing two quarts of oil over a 3 month period and It doesn't burn very much if any at all. Well I started snooping around and noticed my coolant smelled like exhaust... So I took it to a mechanic for a coolant flush and to try a quick fix in a bottle before I rip everything apart. First he did a chem test and he said it the color only changed a little bit so the leak wasn't huge yet. Well he pulled out quarts of oil in the cooling system and filled it back up with the gasket sealer, ran it hot like he should have, and drove it for 4 or so miles, said it seemed everything seemed good. Also had him throw in a new thermostat. Drove it home less than 2 miles and coolant is overflowing from the coolant reservoir on to my driveway
Ok now before I took it in it never gave me any problems. I had hoooot heat, never overheated and exhaust never seemed abnormal. So after I got it back from the mechanic I threw the front end on jack stands and tried burping hoping it was just air bubbles. Got a lot out but there always seems to be more. Couple days after that it puked coolant again but it still never overheats. The hot air never gets as hot as it used to, and usually the hot air gets colder and colder at idle and heats up when I start moving again (during this the temp gauge does not change noticeably). One time however as I was driving at a constant speed the air got colder and colder and the temp gauge started heading to cold even though it was completely warm a moment before. Shortly after I arrived at my destination and it was leaking coolant again but I didn't keep driving to find out what was going to happen next.
Burped it again. Now no matter what I do though I can't seem to get the top coolant tube to get hot like it should be when the engine is warm even though I was able to the first time. So I'm pretty sure my head gasket is toast but what I don't understand is what made it get so bad so suddenly, especially when I was trying to take preventative measures. And how is it that the oil is going into the coolant, I was under the impression it happens the other way around.
I understand that at this point I need a new engine or head gasket but I just don't get what went so wrong. Now I'm weighing my options of selling as is, replacing head gasket, or junkyard engine with low miles considering I have 196XXX on my current one.
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My truck is leaking behind the engine. There is not any coolant on top of the engine. It's leaking above the transmission and running down the passage sides. Are there any hoses that could be leaking behind. Sometimes it leaks a lot other times it doesn't leak at all. The shop thinks it's a freeze plug but wouldn't it be leaking more if it was?
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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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I have a 1999 4x2 F150 XL, 4.2L engine, 5-speed trans., about 197,600 miles and have been getting P0306 and P0174 codes. The check engine light came on and stayed on. Also, pretty much randomly, my engine over-heats and the engine compartment coolant reservoir is suddenly dry as a bone. I bought the truck new and this has only happened twice, during normal driving.
Clearing the 0306 and 0174 codes. Not sure what to do about the over-heating thing.. What I've done so far to try to clear the codes is the least expensive stuff:
=> Replaced both forward O2 sensors, have read where the two rear O2 sensors don't necessarily need to be replaced so I haven't replaced them yet. The sensors that came off are Bosch, as are the ones that I bought from Autozone and installed.
=> Replaced old spark plugs with Motorcraft brand, gapped to 0.054 in.
=> Replaced old spark plug wires with Motorcraft spark plug wires.
=> Cleaned the MAF sensor
=> Replaced PCV valve and replaced an section of elbow hose near it. The original elbow had a big hole right at the 90-degree bend, on the inside.
=> Replaced a cracked, dried-out, vacuum hose coming from the evap cannister purge valve and going to the front underside of the upper intake manifold.
=> replaced fuel filter.
After doing all this, I took it out on the road long enough for the computer to wake up and relearn and got the check-engine light again. Only this time it was flashing. I gather from reading in this forum that a flashing CEL is worse than a constant-on CEL so I drove back home and have yet to take it back out.
After reading about problematic ignition coils, I followed a procedure in my Haynes manual to check mine out:
=> Verified the correct resistance values at the electrical connector (0.7 ohms),
=> Verified battery voltage is present at the harness side of the electrical connector (about 12.6 volts),
=> checked the resistance values between the three sets of 'towers'. Starting from front to back, the resistance readings were 13.06 kOhms, 13.12 kOhms, and 12.98 kOhms. The correct range in the Haynes book is 6.5 to 11.5 kOhms so I thought maybe my ignition coil was bad.
I located a Motorcraft ignition coil at a local O'Reilly Auto Parts store, went there, and was able to check the resistance values on that new one. Turns out the resistance on the new one at the parts store is pretty much the same as that on the one on my truck (all three coils were 13.something kOhms), so I haven't replaced the ignition coil. I guess either my Haynes book is probably incorrect or the ignition coil on my particular F150 has different resistance values than the rest of the vehicles covered by that manual.
Next things I'm looking at replacing:
=> egr valve and the associated line to the DPFE sensor. (DPFE replaced a few years back, as a result of a P0401 code)
=> iac valve
=> upper intake plenum gaskets
I'm kind of at a loss at this point. I hate to just continue replacing things without knowing that I'm replacing the right things.
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I discovered coolant in my oil pan on my 97 f150 4.2. Im replacing my intake manifold gasket which had coolant on the bolts and the timing cover gasket. Should I do the head gasket while its tore down that far?
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My son and I just rebuilt a '99 4.6L motor. A complete overhaul.
After running the motor for 15-25 minutes, I removed the oil filter and discovered a milky substance as I emptied it. I emptied the oil pan and found more water in the oil.
We removed the oil pan and did a coolant system pressure test, but didn't see any coolant coming from the bottom of the engine.
Is there anywhere other than the head gaskets where the 2 can mix or is this a normal occurrence during the break in period? The truck has not been driven anywhere yet.
I did not replace the head bolts with brand new. They were torqued properly tho.
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I have a 2003 F150 4.6l triton v8.... I started over heating yesterday. Got home, let it cool down and found Oil in Coolant. No coolant in oil or transmission fluid. What could be wrong?
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My 2003 f150 4x4 w/5.4 has 220k miles and only minor issues until a few days ago. I now have a coolant leak at the mating surface (both sides left and right) of the aluminum crossover coolant manifold (holds thermostat on one end). I have most of the bolts out to remove the crossover manifold but there is one bolt on the RH side that comes from the underside. All things equal, main question is... Can that crossover mainfold be removed independently from the intake? My thought is that in order to get to that last single bolt (there may be others I am not aware of yet) that I will need to remove the intake.
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Ok 210k truck runs great except I am loosing coolant into #1 cyl. Ive owned the truck since 120k and it has NEVER ran hot not even above normal. I guess due to expansion it will even fill up the cyl nearly hydro locking it, no oil in water/radiator and no water residue in the oil either. I had the intake gaskets replaced thinking it may have been it but it came soon back. I really dont think its an head gasket, has there ever been reported problems with the intakes on these trucks? oh btw 97 2wd with 4.6. Even with coolant getting into the cyl it still runs great just a little white smoke.... I really don't want to replace the engine I think it has a lot of life still in it.
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I have a 2003 F150 4.6 Triton V8.... My truck started over heating again after replacing the Thermostat and Water Pump later this summer.... Well I checked Coolant and I have Oil in the Coolant. I see Nothing wrong with the Tranny Fluid and see nothing wrong with the Oil.... What could be the problem??????
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I have a 2001 F-150 5.4 engine. There is a coolant leak where the coolant leaves the head. Looks like a new gasket is in order. The part that needs to come off crosses over to the driver's side and the thermostat mounts into it. To remove this part and replace the gasket, it appears that most of the top of the engine, throtle body, fuel rails, intake, etc., will have to come off. One of the four bolts holding the part on is installed with the bolt head facing down. The only way I see to get this out is to take everything apart.
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I have a 2000 F-150 xlt off road with a 5.4. I have owned the truck since 2001. The truck has 170K miles on it and I change the oil between 3-4K miles. The last couple oil changes I have I have noticed I haven't been draining as much out as I usually do, this past oil change was about 3 quarts low. I thought it was very odd. The truck runs great and does not smoke or leak oil.
This morning I got in and noticed a tick or slight knock, thought maybe it needed warmed up. After a minute. I shut it off and checked the oil, to my surprise there was next to no in the engine! This has me very worried now. I haven't checked my coolant since last oil change so I'm not sure if that's where it's going. Where to start looking, I'm missing like 5 quarts of oil in 3300 miles. Again the truck run great and does not smoke at all. I was getting ready to change it this weekend, always run high millage 5w-30.
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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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I'm getting a p1299 code..it has plenty of coolant in it..what's the next step I should do to address the problem?
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I replaced water pump and thermostat...thermostat 2 times.
This is the thing : No coolant will come out the water outlet pipe.... I sit there for way too long and nothing flows out the outlet. remove the thermostat or an inlet hose and coolant flows out.
I overheated pretty bad... I drove maybe 10-15 minutes unaware. I suspected blown head gasket but no missing coolant and nothing in the oil. I removed the water outlet pipe and thermostat and just poured coolant in to see if any reached behind the thermostat. It did.
I even started the engine with it removed and coolant flowed out. now it didn't pour out...as in filling the entire diameter and squirting out... HOW MUCH pressure or flow should be normal there.
I am really stuck. I don't think air is an issue because I don't have a radiator cap. I am thinking blown head gasket restricting flow? New water pump is not up to par ?
Why the hell won't the thermostat open at all!!!!??? removed I get some flow!!! Its a get a jiggle pin. I am about to take into to be diagnosed but I cant believe this problem has turned into this. Can they test head gasket? I am preparing myself to do the head gasket and the rest.
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Okay so I was getting the misfire in cylinder 3 so I pulled the plug out and it had coolant in it. Does that mean it needs a new intake manifold gasket? That is what the guy told me at the parts store. Also can I drive it like this or will it damage the engine?
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I have a 2002 supercrew 5.4 triton. My coolant temp gauge is acting up. When it starts up its obviously in the cold range but when the truck begins to get up to temp, the gauge only goes up 1/4 full. What it can be?
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I have a 99 Ford F-150 Lariat. I am smelling oil in my coolant reservoir. I have looked all over the engine and do not see any leaks. I do not see any oil on the ground. The truck does not overheat so I don't know how it is getting in. My engine runs great. What can be causing this problem?
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My 2000 F150 started leaking from a small pin hole in the coolant bypass pipe that is located on the top / front of the intake manifold, it is the pipe that flows toward the heater core. I decided to remove it without pulling the intake "being lazy". I almost had it and it snapped, while trying to retrieve the piece that was still in the hole It broke and part fell into the intake, I assume into the head in one of the coolant ports. I have removed the intake and still cant seem to see it or retrieve it. I have tried a shop vac, and a magnet wand, still nothing. While pulling a vacuum I noticed that I had flow / suctions from all my cooling ports on both heads, the line from the heater core, and even my top radiator hose.
So I guess my question is, If I cant get this out and it fell into one of the water jackets in my block will it hurt anything??? I know rust and other things end up in there anyway. I still haven't given up on removing, I am really in need of answers,, in case I cant remove it. I do know the flow of coolant is up through the pipe I was trying to replace, and either through the heater core (hose), thermostat, or maybe the bypass back to pump.
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1998 F150 4x4 4.2 ... Small leak spraying out of a steel pipe onto the front of the motor. This isn't my truck so I'm not very familiar with it but looks like there is a pipe that come from the water pump threw a bracket and y's and one end has a hose going to heater core n the other part is where the leak is I think it has a hose connected to it that goes to the intake. Only leaks when thermostat open. I'm going to take it apart tonight n see what I find. Iv looked for a replacement part and found nothing so I am going to try n replace the steel pipe with hose.
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I have a 1998 Ford f150 4.6 2x4 i have a coolant leak on the upper intake. It comes out on the back left of the intake through a metal pipe. Well where the metal pipe is (pressed in) to the intake. Now i talk to the guy at ford dealership in the parts he said it is called the (heater pipe). He also told me that the part is 21 dollars but I have to press it in and if that does stop the leak he said I would have to buy a new intake. Now here is the problem I can not find any info regarding this heater pipe. I don't know how to remove it properly, why it is leaking. I can't find it in the handbooks that i have read so far.
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