Ford F-150 - 1997-2003 :: Heater Blows Hot Then Cold / Moisture Coming Out Tail Pipe But No Coolant In It
Dec 8, 2012
I have a 2003 Ford f150 5.4. Heater blows hot, then cold, then hot then cold. When it start blowing cold it pukes out the degas bottle. I have burped it, did the combustion test to make sure not a blown head gasket, the oil clean, there is moisture coming out tail pipe but it has no coolant in it. flushed heater core, pulled water pump off and checked it, its good. Changed thermostat 2 times, put front on ramps to get any air out. I am at a total loss now.
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My DD just developed a head gasket leak. I've been noticing a coolant smell for a few days and today saw lots of white smoke from the tail pipe. I figured this is where my coolant was going and sure enough there is coolant coming from the driver's side head. I've ordered the gaskets and new bolts, but need the install.
I think mostly what I will need is the intake and head bolt torque and sequence. I will need to take a few days off work to get it done. Truck is a 2002 F150 with a 5.4L engine.
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1998 F150 step side, 4.6 V-8 automatic, 176,000 miles -
Heater begins to blow heat as the engine warms up - heat gauge moves up to normal level - running at speed, suddenly the heater blows all cold, the heat gauge pegs to total hot - the oil light comes on, the engine begins to miss - stop the truck, shut off the motor, wait 10 seconds, start back up and all is normal and away I go. Heater working just fine. Gauges are just fine. Have checked the hoses when it pegged to hot, and they are just warm just as if everything is normal.
Problem is intermittent.
Have changed radiator reservoir cap, thermostat, made sure fluid level and mixture is correct - what else to check? Computer issue?
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My buddy install a BPD air/oil oil cooler in his 2003 F250 last week and now there is coolant pouring out the tail pipe. I haven't seen it but he tells me there is quite a bit coming out. It wasn't doing this before we installed the BPD oil cooler. Normally I would say bad EGR cooler but his EGR is deleted. This is the 3rd BPD cooler I've put in and this is the first time I've had any issues after the install. The install went smooth other than we broke the radiator and had to install a new one. I feel bad cause I'm hoping it wasn't something I caused but I just can't think of anything I did during this install that would cause coolant to be getting into the exhaust. He just had it towed to the local Ford dealership.
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After tooling around town and a complete warm up cycle for the engine I encountered a problem. The situation is this.... Had to go around a slow poke....waited until traffic had cleared and nailed it. My truck belched out a boat-load of blue smoke from the tail pipe. Could not duplicate this on the return trip to the stealer (Dealer). Needles to say, I am worried about the health of the engine....(no codes popped, or anything else as I had a code reader hooked up) My truck did the blue cloud again with a rev up in park after a cool down but wouldn't do it again, but there was a strong smell of unburned fuel at the tail pipe.
4.6L, 2WD, Sport Package....
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So the other morning I drive the 140 miles out of town to work for the week. when I pull up to the job site the cooling fans were revving really really high! never heard this before. then it went back to normal after I opened the gate and parked my truck and shut it off. I'm driving maybe 5 miles tops to the job and back to the motel every day. however that is far enough that my heater should be warming up and it's not even coming close to warm. it blows cold air. and to compound that I'm not sure the cooling fans are even working. they don't appear to be. Is there a connection here?
2011 xlt 4x4 super crew.....
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A friend has a 2003 F150 that after starting up will run hot but blow cold air when the heater is on. The truck will run hot for ~ 5seconds then all of a sudden the temp drops to normal range and the heater begins to blow hot. Simultaneously, the oil pressure light comes on when the truck runs hot, then falls to the normal range when the temp drops. I thought perhaps the thermostat is in backward.
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I just came back from a 200 mile trip and parked my truck. Next day, got in the truck and turned the key.... it turned over and white smoke coming out the tail pipe. After doing some research(you tube),I ruled out cps sensor because it was showing low rpms on tach. Replaced glow plug relay and still have same issue.. what else to look at that I can do without getting it towed. Hunting season coming soon and I need the beast.
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I have a 2003 Toyota Camry, XL-E, 4 cylinder vehicle with 156,200 miles on it. The car has been serviced regularly since buying it new and is in excellent condition. My problem is that when starting it for the first time every morning, quite a bit of white/bluish smoke comes out from the tail pipe. It then clears and I don't have the problem for the rest of the day no matter how many times I start the vehicle. The next morning the same thing occurs on the first start and first start only. This problem has been occurring for the past six months. The vehicle seems to be running good. I recently put 1500 miles on a vacation trip and it ran fine. I have discussed this problem with several mechanics and they cannot provide a definite analysis or solution. I have been told that it is possibly a cracked head gasket, cracked gaskets or oil leak being burned off the engine when started for the first time. What do you think might be the problem and what course of action would you recommend I take?
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I recently installed a Banks Ram Air Intake on my stock 1999.5 powerstroke and wow did it ever wake up the turbo. A few weeks later i installed a Flo-Pro 5" stainless exhaust from turbo back with no muffler. The truck is running better than it has in years and with 272000 miles, I am pleased with the results. HOWEVER, I have since noticed a little black sticky soot coming out of the tail pipe, a bit of vapor (no oil spitting) from the oil filler tube with the lid off, and now my dip stick tube where it enters the oil pan is leaking. What is going on , or am I now chasing and fixing week points on this truck?
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I took the dive into a new heater core, as the heater was not getting hot. These are the things I did while on my adventure.
1. Before reinstalling the hoses, I blew thru them to make sure of no clogs...water flew out the other hose..no problem..no clog.
2. inspected mix door not cracked or broken...no problem
3.actuator opens and closes ok, I assume, I can hear the motor run and the door thump closed...no problem
4. water and anti freeze level good....no problem
Start vehicle,let warm up, turn on heat.....No Heat...
5. check hoses at core, one is hot ,the other is not....Problem...
1997 f150 4x4 ...
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I just bought a 1997 Toyota Tercel 5-speed stick, with 175,000 miles, and the temperature gauge moves from its lowest possible position to its highest possible position when the key is turned on, although the engine does not overheat, and no coolant is leaking or being burned. I replaced the coolant temperature sensor, but the actions of the gauge were not affected. I don't know if it is somehow related, but the heater blows cold, regardless the setting of the temperature dial on the dash. What I might try next?
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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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I would I have a 01 7.3 e350 with 111k miles. I drove the van a couple of days ago.it sat for 2 days and now it wont go past 30mph.the van shakes crazy and went when i hit the petal no power with smoke coming out the tail pipe sometimes. When I shut the van off and restart it to drive it,it sounds better. I changed the fuel filter with motorcraft and changed the oil. Here is the kicker. It ran good after I changed the fuel filter the whole day and now its 4th of july and I went to get some drinks and it happened again.
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When I turn on the heater on at any temp and fan setting the A/C automatically turns on (compressor and condensor fan turns on) . Engine temp comes up and stays at 190. I can turn up the heat to HI and still cold air blows. All buttons and LEDs work on the climatronic, is it the climatronic that is bad?
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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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My 2003 Buick Century heater works fine while accelerating but as soon as I release the gas the air begins to cool, swiftly. I have had the radiator flushed and the coolant topped off but the problem persists.
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My 1999 F250 ld light duty has an AC problem. It only blows cold sometimes. And it doesn't always work when selected to AC or Max AC. It will work on Panel also. When it works it works great. It blows really cold. But it will work fine then I'll come to a stoplight and it will stop sometimes.
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I have a 2004 GMC Sierra 2500 Duramax diesel pickup. It has been blowing white smoke from the tail pipe and drinking coolant, 10 - 15 gallons since February. There are no obvious leaks of coolant under the truck. However, within the last 3 weeks it has on 4 occasions spewed coolant from the surge tank from the overflow vent. We have narrowed down the problem to either a headgasket leak or an injector leak.
We had it in to the dealership (big mistake) and they found nothing wrong. They think we either need to wait for something catastrophic to happen or do the head gasket and replace the heads. There is a technical service bulletin about the head gasket. There is anecdotal info from an article written by a master tech from GM about the injectors. We also know there is something about GM paying for the injectors and injector sleeves to be replaced if there is an issue like we have.
All the dealership is saying they did was drive around the truck and saw no coolant spewing forth and no smoke. They did see a lowering of coolant level in the surge tank. They also did another pressure test on the coolant system and found nothing. Outside temps and weather conditions have no effect on this situation unfortunately nor does the length of time it's driven. How much should a head gasket/head job cost? How much time should it take? Does it require removal of the cab? How much should an injector job cost? How much time should that take?
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Got a 2 wheel drive 2000 Excursion with approx. 215K miles with the 7.3L.
Slight shake in motor + you can literally floor the pedal and you'll move a little faster than a snail.
Does this sound like bad injectors? Also - tried to start it today and it was just cranking forever...Couldn't get it to start..I did notice while I was in drivers seat looking out the window...some white smoke coming from tail pipe while it was cranking...
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My brother-in-law has a 97 F-150 with 4.6L that has no heat in the cab (blows cold air no matter what setting at HVAC controller). Heater core was replaced one year ago and T-stat was replaced last night. Coolant level is full and the heater hoses are BOTH hot so I believe warm coolant is flowing through the heater core. I am thinking that the HVAC controller may be at fault or maybe the mixing door in the HVAC plenum is malfunctioning. I have 97 rangers that had a broken hinge pin for the mixing door inside the plenum (a common problem with these trucks), maybe this is the same issue (I don't know). I am taking the whole dash out to see what the trouble is.
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