Ford Super Duty (1999-2016) :: 2000 F250 V10 - Vacuum Loss Prevent 4x4 Lo Range Engagement
Mar 18, 2015
2000 6.8 v10 F250 supper duty crew cab. 4x4 high switch's on (manual lock hubs installed) but 4x4 low will not engage. Brake input/out put tested good. Trans switch Park/"N" both test good. PCM reads switch output in all modes, (dash 4x4 selector). The only other issue I am having is the Vacuum is bad ( defrost default no blend door operation). Would vacuum loss prevent 4x4 lo range engagement (with manual hubs ) or should I go to the solenoid, relays on the case/ right fender?
View 4 Replies
Advertisement
When passing or going up small inclines on freeway, my F250 seems to make the shift to the passing gear but then almost a complete loss of power. Jerks around for a few seconds and finally provides enough power to at least get back to the original speed. (It feels kind of like the lurching, etc. I used to get when those stinking GM diesel injectors would act up in the 1990's.)
It also stays in first/second as I punch it while entering the freeway and doesn't want to make the shift. I can put it in neutral and race the engine, so I don't think it is an engine problem, unless the transmission is electronically controlled. I have a lot of computer dashboard gauge resets after falling to zero and sometimes have to set and release the parking brake to get the auto door locks and windows to work. (That started after a car break in where the door electronics were apparently pinched, but that was a couple of years ago.)
Does it sound like the transmission or electronics? In the old days replacing an automatic transmission filter seemed to fix a lot of transmission issues. Not an option now, but would I expect to see any results doing a transmission flush and fluid change? It's probably been about 60000 since I had that done. (157000 now).
View 2 Replies
Having trouble with vacuum on my '06 CCLB V10. I only lose vacuum while towing, not sure why. Lines all seem like they're fine. I have no issues while unloaded. What could be causing this?
View 8 Replies
I have an 06 F-250. I have had this truck since Oct 2013 and had never use 4 wheel drive here in southern Alabama, so my question is i lock my hubs, turn my selector to 4 high and it works. Now selecting to 4 low and I get nothing.
View 9 Replies
2000 super duty v10 with 92,000 miles. Getting that common rattle around 2k rpm range that goes away if I give it gas or let off. I originally thought it was the inspection plate on the transmission so I removed it and went for a drive to verify. The sound is still present so the only thing I can think of is the catalytic converter is worn out??
View 10 Replies
I have the factory keyless entry on my '03 F-250 SuperCab. I have always had to be within about 5'-8' of my cab to get the doors to lock/unlock. I thought it was normal for the longest time, but recently learned it's not. I am out of warranty now so I need to try and fix this myself. What is the location of the receiver module, and what it looks like? Also, is there an external antenna w/ the factory keyless entry, and where is it at? Transmitters are fine, as is battery power. Only think it could be is receiver/antenna.
View 14 Replies
I have a 2010 f 250 super-duty and i cannot get vacuum past the solenoid mounted on top of the radiator. Ford has given me nothing but bad advice. I know i have a vacuum leak after the solenoid and need to replace the lines going to the two hubs but when i switch on the 4wd and hook up a vacuum gauge the vacuum is good up to the solenoid about 12 inches. i constantly have 12 volts going to the center lead but nothing else in the other two leads either in 4 high, 4 low, or 2wd. Am I missing something here? shouldn't there be a voltage change when i turn the switch to 4wd to actuate the vacuum solenoid to let the vacuum pass thru the solenoid? I have tried replacing the solenoid but that did not work. Also use rubber vacuum line and make at down to the hubs?
View 4 Replies
I am in the process of rebuilding my front end and have found that the nipples that screw into the top of the knuckles for the ESOF system are rusted and need replacing. I'd like to keep the system as close to original as possible, but have had no luck in finding a replacement. What the appropriate Ford part number is or where I could pick up a suitable replacement. This would be for a 2001 F-250 4X4 with the V10.
View 2 Replies
I recently picked up a '99 F250 Super Duty with the 6.8L V10 for a song.
The 4 wheel drive hubs are not working with the vacuum. If I use the manual lock on the hubs all is well. I ordered the Innova 31703 CarScan OBD2 + OBD1/ABS/SRS Scan Tool. It says it does Trans codes. I am hoping it will cover the 4 wheel drive too.
Maybe related, the heat is always on. Meaning I feel heat at my feet when the temp dial is cold and fan is off. I can't find the heater control valve to check the vacuum line.
View 14 Replies
2002 F250 SD 4X4 5.4L. 4.5 inch pro comp lift tire size 305/75/R16. K&N cold air set up. 208,000kms
I know the truck does horrible on gas but lately is been getting worse, maybe I am getting 350km to a tank. Mixed highway city driving. Sounds like I might have a vacuum leak somewhere but I have no engine light. I've had the truck since last year and put about 10,000km. on it done regular oil changes .. brake maintenance no motor work so far.
View 2 Replies
I have a 2013 F250 which has both the Manual and auto locking hub feature. I tried to plow my driveway this morning and after making one pass I put the truck in reverse and could not back up my steep driveway. The truck is showing locked in 4x4 on the dash, the 4x4 control is in high lock but the front wheels will not turn. It has been very cold here lately (-30) and I'm wondering if the vacuum lines for the auto locking hubs have frozen. I have switched the control out of 4x4 and back in several times, and it does lock in again, but as soon as I put the truck into reverse, they unlock again. The hubs are covered with ice and snow right now so I have not yet tried to manually lock them.
View 14 Replies
My 1999 F 250 5.4 liter. I know I have a vacuum leak because whenever I accelerate the air conditioning coming from the vents switches to the defroster. So my question is how do I go about finding the leak? My hubs in the front are manual so I know I don't have lines going up there. I do have some mechanical capabilities I've changed water pumps alternators brakes etc. But never anything with vacuum lines or a/c.
View 14 Replies
I have a 2000 F-350 diesel and the electric vacuum pump went out. I bought a new one from napa and it would not stop pumping. Checked for leaks and found none. If I unplug the hose from the vacuum can the next day, you can hear it suck air so it seems I am holding vacuum. Problem is I burnt out the new pump in two weeks from running all the time. Bought another one and same problem.
So now I plug the electrical in and let it build up vacuum for a couple of minutes and then disconnect it so it won't burn out and I am good for days on vent controls and 4x4. If there has been a bad batch of pumps out there? I also unplugged the hose from the pump to the holding tank and put my finger over where the pump sucks and it still did not shut off.
View 3 Replies
One of my work trucks is a 99 F-250 5.4L. Up until recently it's been running strong. Then one day it's like someone flipped a switch, and now it runs like it's losing power.
Symptoms: a quick short stumble when you first hit the accelerator. While driving, it takes the entire pedal to accelerate. Even with the pedal to the floor, it won't keep up with traffic. Driving uphill, it will barely maintain 40 mph.
I've checked everything I can think of. Fluids and filters are all good. Battery and alternator are good. There are no trouble codes. I have Autoenginuity with the Ford Bundle, and the truck passes every diagnostic test I throw at it.
There's no smoke. It still idles pretty smooth, although there is a slight and very quick random shudder in the idle that has started at the same time it started losing power.
Transmission is good. The last thing I tried was to change the fuel filter, but that made zero difference. Quick question, does the tank on the 5.4L trucks have a pickup screen like the diesels? If so, I might try blowing some compressed air through the fuel line and see if it dislodges anything.
So that's where I'm at. It has no power, yet I can't find a single thing wrong with it.
View 14 Replies
I have a 99 F-250SD with 5.4 automatic that just all of a sudden started running unevenly at random times, but frequently. There is a pending code P0300 Random/multiple cylinder misfire. I have had the truck for 12 years and it has run perfectly for the last 10+ years and just started this problem, it did not come on slowly but all of a sudden. I have seen on here that some people say that 90% of the time a PO300 is a bad cop. I replaced the plugs 60k miles ago when I had a bad coil on plug 10 years ago that did not set any codes, but this seems very different that more than one cylinder seems affected, like maybe 2 or more cylinders are not firing momentarily.
There is a big power loss momentarily while it happens, but doesn't happen for long. The fuel pressure stays pretty constant (30 psi at rail) even while it happens, and it can affect the idle as well as while accelerating or cruising at speed. I cant imagine more than one coil on plug would be skipping at the same times or fail at the exact same time, but maybe having only one bad cop could cause this much hesitation? Does the code that indicates random/multiple cylinder misfire rule out only one bad cop? It just seems like running on 7 cylinders wouldn't be so noticeable. Could a sticking egr valve cause unevenness at idle and higher rpms and set a P0300 code? Would checking manifold vacuum be they way to see if egr valve is not working correctly.
View 11 Replies
My 2010 F250 V10 120000 mile has a sudden loss of MPG. It usually is around 12 MPG but now I'm at 8 I checked the air filter and its clean I checked the tire pressure and there all up to pressure. I'm probably going to try the fuel filter next.
View 2 Replies
It is a 99 F350 diesel automatic. T- case motor is good. Relays are new. All fuses are good. I have no power coming into the dash engagement switch. Bought this pickup for a backup farm truck and need the 4x4 to work.
View 6 Replies
On the highway doing 100 mph. during af take over, my Ford F-250 6,4 Super Duty 2008, lost nearly all power. (now it is like driving my old hummer h1)
Engine and car runs/starts great, only 10 minutes uptil 60 mph. now.
My mechanic has given up. He checked following:
EGR = OK
HOSES = OK
ERROR CODES = NONE
INTER COOLER = OK
PARTICLE FILTER CLEAN = OK
TEST WITHOUT EXHAUST = NO DIFFERENCE
FLUIDS = OK
Hopefully something I can fix with my hammer. The car has 85.000 miles on the clock.
View 14 Replies
On a 2000 F-350 with 5.4 engine, where does the vacuum line enter the cab? I got a truck in with no vacuum signal to the heat controls, and it has a slight miss at idle. Both of these are signs of a vacuum leak, but i can not find the line going into the cab.
View 5 Replies
Ok I am getting a (6R140) transmission behaviour every morning drive or later in the day after the transmission cools down. I am experiencing a 2-3 second delay of engagement when putting truck in Reverse. This happens EVERY time whether transmission is cold or warmed up. I am also having very hard/harsh shift fares going into 3rd gear and 5th gear with the 3rd gear being the worse of the two. Also experiencing these hard/harsh shift when downshifting as well.
I took the truck to my local dealer and I let it sit over night in their lot so they could experience it at its worst after sitting all night. They definitely recognized the issue. But since it wasn't throwing and codes. I find this an unacceptable answer.
I brought to their attention that this issue is well documented online and a lot are having success with performing TSB 11-7-10 (replacing solenoids) They looked it up and said my truck doesn't apply to TSB because of the build date. My window sticker and VIN # implies the truck was built 10-11-2010. Which from my understanding, does fall under the required TSB. None the less, I insisted that I know I'm out of warranty and I will just pay to have this TSB performed. They refused.
What should I do? I know everyday I run my truck with this issue it is decreasing the reliability of this transmission and it will most likely end with a full transmission replacement.
View 5 Replies
I have a 1999 f250 super duty with the 5.4 Triton motor with a 5 speed. I bought the truck a couple months ago, and it had a bad manifold leak (not surprised lol). but it ran fine just noisy. So i had a shop do new gaskets and bolts. Then my problems started.........
When you start up the truck she runs fine and some times drives fine. I will be driving along and its like some one hits a switch and i suddenly loose all power it spits and sputters and i have to down shift to make any kind of hill.
So I figures I had a misfire i got a light on for cylinder 5. So I decided to change all coils and plugs hoping that would clear things up...... well it didn't. It ran great for roughly 15 miles then it started to do the same thing again. I've changed air filter and fuel filter also.
When it starts sputtering i sometimes get a check engine light on and then it goes away. when the light is on the codes are:
P1151 A Heated Exhaust Oxygen (HO2S) sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time.
Read more at: [URL] ....
P1152 Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 2
Read more: P1152 FORD Lack of Upstream Heated Oxygen Sensor Switch Sensor Indicates Rich Bank 2 | AutoCodes
Both codes come on together always. but it will go away when the sputtering clears up. I just checked fuel pressure its at 32psi at a idle.
View 1 Replies
