Ford Super Duty (1999-2016) :: 2005 F250 - CEL Code P1299 For Cylinder Head Temperature Sensor
Jun 19, 2013
(The truck is a 05 f250 with a 5.4l). The problem first started out with the engine temperature gauge spiking and then resetting itself when the truck is turned off and then turned back on. If I drove the truck for any distance it would go into limp mode and the CEL would come on. The code was p1299, which is the cylinder head temperature sensor, and I replaced the sensor but no luck. Then the shop and I went through all accessories hooked up and couldn't find a short until I remembered that my prodigy break controller would occasionally read "ol" or "sh" which both readings are from shorts. I tow a enclosed trailer about 85% of the time and the past week I have been towing it with a different 250 and the same break controller without a problem so I have eliminated the trailer. But the shop just said the problem was the controller and unhooked it.
Now the next day it threw the same code with the controller unhooked and the trailer hooked up. after thinking it seemed that it was happening when i accelerated so I took apart the 7 pin and sure enough there was a little water in it, but after driving it around for a little and no code being thrown I hooked my break controller up and it still was showing ol or sh so i believe there is still a short. Also I noticed that my voltage is reading right at 13v instead of the 13.8-14v it was reading before this issue arose. I think I have narrowed it down to the 7 pin harness and/or electrical in the break components, but do not know what would loop back to the temperature sensor.
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After replacing most of the underside of my Super Duty, Complete front end, backing plates, brakes, rotors and shocks, I have a misfire code on cylinder #4. I replaced the plugs, cleaned the MAS and filter and rotated the coil to cylinder #1. Still have a misfire on #4 and noticed the coolant slightly low and some condensation on the oil cap. Could this be the intake gasket? My mechanic is away for 2 weeks and I think the price at the dealer will kill me. I have 63K on the truck, don't tow and plow mostly family members. It's getting a little rusty but is still in good shape.
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My 5.4 F250 with 200,000 miles having many problems... It all started a few months ago, when the cam needed to be replaced, and a cam phaser was also replaced at the same time. It ran fine after, then threw a code for cylinder 3 misfire. The guy I took it to said it was due to the huge crack in the exhaust manifold and that was messing with the o2 sensor coming up as a cylinder 3 misfire. So, got the new manifold and it was good for a few weeks.
Now, starting the other night, Friday the 13th, it threw a CEL when I was coming into the driveway. It had been throwing a code every once in a while, and I brought it to school to scan it Friday the 13th but there was no code. So, I assume that it is an intermittent problem, no big deal. When I go to get in my truck to go to work a few hours later, the 5.4 cranks... and cranks... and cranks.
I get it to fire up, and it dies again. Run codes, and it says that the cam positioning sensor is broken. Replace both of them, still acts up ie. doesn't start when it does start it runs very rough and stalls. Get it up to my uncles shop, and replace fuel filter.. Still runs like trash. Run codes now, and it says rich/lean in bank 1.. My uncle tells me to move my truck out of the shop, so I start it up, and it runs great. No hiccups, it idles perfect as I move his truck out of the shop first.
I park my truck outside and let it idle for about 10 mins, and when I come back out it is still idling, perfectly fine. I get in, put it in reverse, and get about 20 feet when it dies and will no longer start back up. What could be going wrong?! Sick of throwing money into this thing! At one time while started up in my uncles shop, it was blowing black smoke, as if it was a diesel!
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I recently picked up a 2005 f250 SD 5.4 4x4... I was having issues with sporadic shifting and wandering shifts while cruising around 100kph, scanned it and came up with p0721 OSS sensor circuit performance fault.
I checked the harness and all looks fine, now I attempted to remove the OSS at the rear of the tranny, got the 8mm bolt out however could not, for the life of me get the sensor out. I tried not to use pliers to twist the sensor or anything for fear of breaking the sensor off and having bits go into the transmission.
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My truck threw a code p1299 last night on my way home from the lake. I was towing on a huge grade and all the sudden my engine temp gauge pegged out on me and check engine light came on. I pulled over and noticed a bunch of coolant had overflown the cap but the engine didn't seem to have over heated. When I restarted the truck the engine temp was immediately normal range. I drove for another 30 min or so and the engine temp started to climb and then come back to normal then climb and stay pegged. I pulled over again and noticed the coolant level was low and coolant had overflown the reservoir. I restarted the truck and once again it was normal. I just drove surface streets the rest of the way with no issue. I suspect blown head gasket. This is a 2003 F-250 6.8L with 100000 miles.
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2001 EX 4WD 6.8l ... Just finished an engine rebuild and have a single DTC showing that I am having a problem isolating. In short: P1299 Cylinder Head Overtemp Protection Active. I have new sensors all around however. I have run a separate ground to the intake manifold to rule out bad ground. I have cleaned all ground connections otherwise. After clearing codes and start from cold, the issue does not occur until the engine warms up. I was seeing temps over 250 F on my scantool.
I pulled the thermostat and ran from cold... took a lot longer, but the condition eventually occurred. Scantool shows temp of 255.2 when protection kicked in. However, the engine, radiator, intake manifold all just slightly warm to the touch, barely no heat coming through the HVAC system. So, I do believe I had a new bad thermostat in the mix, but why do I still throw a code for the high temp. Temp gauge sits at Cold the whole time. Here's the catch, if I disconnect only the air coolant temp sensor, the problem does not occur, the engine runs like a kitten.
Key On, Engine off, the coolant temp gauge goes right to Hot and stays there. When the problem first started, the coolant temp gauge started going back and forth between Cold and Hot repeatedly. I have replaced that particular sensor twice to rule out a new bad sensor. Key on, engine off; with new sensor reads 185 ECT temp. Original sensor read 318, first replacement read 257. This third sensor is the only one that actually registers changing temperatures.
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2011 6.7... My truck is throwing code P2033 Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor. What is the part number for that sensor?
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To make a long story short, after replacing the timing chains, guides, and tensioners, the right side cylinder head began running very loud. Think of the usual chatter associated with these engines and multiply it. It was constant, from start up to shut down, and it increased with rpm. Thought at first it may be caused by debris in the oil clogging the lifter(s). After changing the oil multiple times along with different additives and driving roughly 600 miles, the noise persisted. Taking a look down the oil filler tube with a flashlight and with the engine running, the head looked dry. Safe to say at this point I was starving the head of oil.
Removed the valve cover. Removed the rearmost camshaft cap. Sure enough, the oil passage was completely blocked. Inspected everything and there was signs of running dry (minor discoloration, dried oil spots... but no real damage and no play anywhere. Put it all back together and the truck runs quieter than the day a bought it.
Here's the camshaft cap:
This is exactly what it looked like after removal. The material blocking the passage is hard and bridle like plastic.
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I just bought a 'new to me' 2005 F250, Crew Cab with a v10. The Carfax showed up clean but after doing some detailing on it, I realized it had been resprayed and there was a little wrinkle in the bumper. I tried using the ignition key to lock the tailgate but it didn't work, so I'm assuming its been replaced. Need to confirm that the ignition key should be the key that works the tailgate lock or is the tailgate a different key that they guy never gave me?
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I am running a 2008 Ford F-250 with the DPF Delete and the Mini Maxx Tunner. I have replaced the ECT (Engine Coolant Temp Sensor) as well as the EGR Valve and housing troubleshooting this issue. Both the Engine light and the coolant icon come on when I turn on the vehicle. I am getting a P0117 Engine Coolant Temperature Circuit Low code on the Mini Maxx.
From a cold start with codes cleared if I turn the engine to ON even without starting the engine the Engine codes will come on and the the Mini Maxx will read engine coolant temp 302 and will go into Defueling Mode. I have repeatedly tried removing and reattaching the connector to the ECT thinking it could be loose connection. I can't drive the truck because there is no power and i know the engine is not hot because I have let it sit all night before doing these tests. I do not have a scanner to test other than the Mini Maxx. Other notes: I have checked Coolant I have checked Oil
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You know the "mechanic's fiances truck" problem. I recently replaced the cam sensor in my 05' F250 Gas. The check engine light had been on for a while before that and my truck rode great, however I now want to sell it and I can't do that with a check engine light on. It's got about 85k miles on it.
After replacing the sensor, the light went off for about 20 miles, but it is now back on and my truck seems to miss every once in a while on acceleration or cruising. Some days it's worse than others. The check engine light still says cam sensor, but the sensor is brand new.
My fiance is a mechanic, so I don't know all the details about code numbers and such. However, I want to sell this truck pretty soon, and I would like it to run correctly. His dad (another mechanic) seems to think it could be a coil and wants to wait for that light to come on, but I would rather fix the problem and sell the truck!
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Ok says injector pressure sensor low first guess was the upgrade to the blue spring. Did that code clear for a day then comes back on looking at the hfcm but kinda unsure? Came on after we got the real cold snap and i had to buy a block heater I don't see one on here i also added diesel 911 to the tank this is a 05 f250 w 6.0l....
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I have a 2005 F250 with the 5.4. This truck has been one thing after another, as you can tell from my other posts. The problem this time is, if it cranks hard to start because it's cold(can be anywhere from as high as 32, but usually in the teens) it will start just fine, then several minutes later throw the check engine light. Put the scanner on, like clockwork, 4 codes, always cylinder 1 misfire pending, misfire on first 1,000 revolutions pending, cylinder 1 misfire confirmed, misfire on first 1,000 revolutions confirmed.
Sometimes you can hear a slight lope in the idle when it does this. Clear the codes, runs perfectly fine. It will never do it after it's been started for the day. Some days you would think for sure it would throw it when it's frigid and the winds been blowing on it, it doesn't bother, other days you wouldn't think it would, and it does.Can the computer think that since it didn't start right up, it misfired?
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I have a 2006 f250 6.0l diesel. I just replaced the egr valve plus egr cooler and I was going to flush the coolant. I was filling the truck with distilled water to do the flush when I noticed a leak under the truck. When looked to see where it was coming from it looks like it's coming from where the cylinder head meets the block on both sides in the back by the transmission. Is this a sign that the head gaskets are shot or did I forgot to tighten a hose or something stupid like that?
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I have a '97 f350/460 efi with 210,000 miles on everything. the only oil it leaks is driver side cylinder head (very little). And that is my fault, a little impatient when changing head gaskets. Its gonna outlast me I am pretty sure. Anyway, fords rock...
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I have a 02 F250 with 137 thousand miles. When it had 130 thousand on it I had the plugs changed unknowing that this year 5.4 was known for blowing the plugs.
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My truck has a bit of an interesting trait. Unless it's just about freezing, my transmission is just about always at operating temperature. If it's 50*F outside and I start the truck, the Trans temp is smack dab in the middle. If it's 30*F outside it starts just a little above cold then is "warmed up" when I drive it down my short street block, which ain't right.
All the rest of the time, it's always reading middle of the bar temperature. My old 5.4L never did this. My 7.3L does. Best I can tell is it's a fault in the temperature sensor for the transmission. I don't have a scan gauge yet to get the readings but will be getting one. Just need to know where the sensor is at so I can have a starting point.
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My Bank 2 Sensor 2 oxygen sensor is faulty and I need to replace it. The guys at the parts store were pretty certain it is downstream driver's side, but I just want to make sure before I PB Blasted and removed it. 2008 F250 SD v10 ....
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So I just replace my Cat. Converter with all new sensors in them. I just replaced my spark plugs. (I'm knocking out these check engine light problems) and I think I'm getting close to the root as to why these other parts went bad. Why my o2 sensor would be stuck on "lean" ....
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I've been trying to figure out what is going on with my '99 F-250 V10, you can check out this thread for the back story
[URL]....
I did a compression check and the results seem inconclusive to me- see image.
Before I did the compression check I started to take the intake manifold off to change the gasket set and it's about 50% done. I'm at a crossroad now. Do you think I should finish switching out the intake gaskets or do you think it's more than likely a head gasket? I would hate to put it back together, it still smoke and have to take the intake and everything else back off to do the head gaskets.
Someone had mentioned a possible small crack in the cylinder wall that is closing up when the engine gets heat in it and obviously doing the intake and cylinder head gaskets would fix it if that's the problem.
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I am replacing the head gaskets on a 2006 Ford F250 6.0 .... I have heard that I should replace the head bolts with studs. Do I torque the studs just like the bolts?
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