I have a 1999 Ford F450 Tow truck with a 7.3 turbo. It loses power and misses when I give it gas but when driving normal speed no problems.
I had a ford technician look at problem with a computer and he said number 8 injector . Today number 8 was changed.
Test drove it same problem. I also changed th fuel filter. And I emptied the tank to make sure No water
1994 f250 7.3 turbo problem.. runs great on the level.. Cruises 65 no problem.. We have an 8% grade coming from town and half way up it starts cutting out and sounds like a jack brake under the hood and loses power.. Once over the top it clears out and runs fine again.... I just changed the fuel filters but no luck... I have been wrenching on cars all my life but no diesels..
View 6 RepliesI have a 2001 F450 7.3 chassis cab with just over 100k. I have a new problem... So far on two different occasions the service engine came on followed by a loss of power under a load and white smoke from the exhaust. Took it to the shop the first time, they determined it to be a dirty air filter, which seemed odd since it just happened all of a sudden. They changed air & fuel filter, problem gone- for two weeks..
View 8 RepliesThe last couple of days with the temps in the 50's, my 2000 F550 with a 7.3, will start normally and idle fine. When I try to drive it, I get less than a quarter mile and it just looses power and will die.
If I flutter the pedal, sometimes it will keep running, very poorly. And when it does this, it is putting out blue smoke. After it does this, it will run fine. Just like nothing is wrong.
What do I look for, or is this normal. I have had the truck since last October and this is the first time it has acted like this.
I am a mechanic and tow operator running a late 99 f350 7.3 6 speed cab and chassis wrecker. This truck has had a hard life and has been neglected for quite some time, and now has become my baby/headache. Truck starts great, idles nice, and will run great for about 5 minutes until it starts billowing white smoke that smells like fuel and loses all power. If you continue to drive it it will die. Sounds like it's dropping cylinders and will barely idle. If you stop for 5 minutes or so and let it idle it will smooth back out and will run great again for another minute or two, then right back to stumbling.
Using torque app, hpop pressure looks good when it's running well. Peaks at 3k, IPR maintaining 30-40% max. As soon as it stumbles you can see the hpop drop to 5-600 and the IPR will climb to 65%. Let it idea bit and they go back to normal, and stay good until it stumbles again.
Ive changed the fuel pump, ICP,rebuilt FPR, change fuel filter, pulled and cleaned the fuel tank (metal tank, no delamination, looks perfect inside). Pickup screen looked good. Cleaned the IPR, cleaned the hpop reservoir, there was no screen inside. Checked voltage at fuel pump, 11.78 across the pump with it running. Pulled valve covers, no noticeable leaks around injectors. Injectors have less than 5k miles. Remans with 100% larger tips.
To me it seems like the lpop is not keeping up with the hpop under load, starving it until you idle and let it catch up. Could it still be bad injector orings? Bad lpop? Something I'm not thinking of?
I am at a loss on what this could be. For the past 8 - 9 months my truck will randomly miss and if I am going slow enough it will cause the engine to quit but only when it is raining. I sometimes get a service light when it happens but as soon as i turn the key off and back on it goes away. My truck runs perfect otherwise and even when it rains except when it randomly does what I just explained.
This started when I replaced my passenger side valve cover gasket and I also took out my "brain box" (don't remember what it's called) and put it back in (didn't replace it). I did have the up-pipe replaced as well around the same time and put in EGT, boost and trans temp gauges. That's about the only things engine compartment wise that's been done.
I did just take it to a shop to put on a scanner and after his testing it did spit out 1 code. It was the cam position sensor. Can this sensor cause what I have explained? Like I said, this only happens when it rains. Doesn't matter if it's poring or barely sprinkling.
I have a 2003 F250 4X4 crew cab 7.3. It was running great at 244,000 miles. The only problem was the HPOP was leaking, I had done the two upper O rings several thousand miles ago. Any ways after changing the HPOP while driving down the road it would miss at times or hiccup (funny it wasn't doing this before) Also it died a couple times, once at a stop light, had to get it towed home another time in stop and go traffic, this time it started with-in 10 min after trying several times. So I decided to change the IPR, still did the same thing. So I decided to change the CMP with negative results. I checked the ICP sensor it looked good no oil leaking or no saturation. So would it be safe to say I may have gotten a bad HPOP. Remember, I had no problems until I replaced the HPOP
View 14 Repliesi have a 99 f450 7.3 that cranks but will not start. I did an injector buzz test but it sais no communication between the computers. it has a new rebuilt engine, new ipr, icp, hpop, water pump, and both computers.
View 4 RepliesI have a 2000 F450 with a 7.3. I am having problems starting it. Batteries are good, engine turns over strong. It has started a few times after a extremely long crank (so long I am sure I am burning out the starter). I have replaced the CPS since it was cheap enough but that didn't make a difference. I have unplugged the ICP and it is very oily inside the connection. Does this mean the ICP should definitely be replaced? The truck will not start with the ICP unplugged. Should it be able to start with the ICP unplugged? Other items I plan on looking at at the IPR and possible the IDM box. Am I on the right track?
View 11 RepliesMy VIN inside the door is scratched enough that the State can't verify it. They need two locations to match the VIN otherwise the vehicle must be scheduled for a "level 3" vin inspection hundreds of miles away. Well I tried to find one on the engine where the DMV can do a "level 2" vin inspection but I can't find it. Where other vin's are on my 2002 Ford 450. Mine is a flat bed.
View 4 RepliesI have a 2000 Ford F450 7.3 4x4 dully with a PTO driven winch 108,000 miles. The truck has develop a transmission slip.
I have changed the transmission fluid twice and it drives better but it slips badly. I can drive it up to highway speeds but it has problems getting from 0 to 10 MPH. The transmission runs hotter then normal but nothing major maybe around 205 degrees
Do I need a complete rebuild? This is a beater truck that I use to tow mainly. It is not worth a major investment. I need the PTO gear and 4x4.
I have several 2000 through 2003 7.3 E350 and E450 short school buses. Does the transmission from these has a PTO gear? I am thinking of pulling the transmission from one of them and swapping it.
It looks like the transfer case just bolts to the back of the transmission; I believe that a 2wd van 7.3 transmission will work with the 2000 F450 setup.
I have a 1999 f450 7.3 diesel that surges and will stall but will start right back up again and drive. It does this over and over but all ways gets back to the shop. The engine starts good when cold so glow plugs are working correctly. What I have done:
Fuel filter change, check electric fuel pump but have not replaced it. I have replace camshaft sensor.
What I have found d by inspection:
Throttle pedal has 2 electrical connections one for the IVS and one for the TPS. I have experience on the 7.3 IDI diesels but very little on the newer injection system.
The truck is a 2002 F450 7.3 diesel with about 120k Miles.
While driving from 45-70Mph the truck engine stops for about 1 second and starts back up by itself. I thought the problem was the cps so I replaced it with a ford CPS. Today the problem still persists. The truck engine turns off and comes back on, the tach drops to 0 rpm and so does the speed.
The Check Engine Light comes on and so does the water in fuel light and so does the Check Gage light. After I turn off the truck and start it back up the truck does not show the lights.
I believe I found the issue, but can't look into it today. While I was moving some of the wires on the truck I found out that if I move the red/black bunch just a little bit the truck shuts off and comes back on when i let it go.
I have a 2000 F350 7.3 213,000 miles. Manual tranny, 2wd. It is my daily driver.
No issues until 2 weeks ago I pulled out and began shift gears when the engine died and I completely lose pedal. The engine does not shut off it goes to idle and the lights and power are fine but I quickly lose acceleration. After a couple seconds and a few pumps on the pedal it comes back. The problem is intermittant. Until yesterday it was only in the morning but then happened on the way home from work. Thinking ti was water in the fuel I used an additive to cure the water.
I changed the fuel filter just after I bought it in April of this year. I know there is a Injector Pressure Sensor that could be the culprit. EGR?
'03 6.0 Powerstroke. Rough idle AFTER it warms up. Runs fine cold. It seems to studder and miss at mid range acceleration. Egr deleted and new oil cooler installed. New lift pump. Replaced ICP sensor. Have 48.5 volts at the FICM. Replaced the fuel pressure spring to the blue one. All new filters. Does not smoke. Does not throw codes. I need to fix this truck one last time. It has a date with the bottem of a very deep lake! It has been nothing but a pos since it hit the ripe old age of 25k miles!
View 14 RepliesI own a 2003 Ford F-450 Superduty Chassis w/Utility Body. Owned it for the last 2-1/2 years . So far, the only things needing replacement were an Alternator, FICM, and routine oil and transmission fluid as well as filters.
This past week the truck started lurching while in traffic. I brought it back to the shop and put the scanner on it, and found codes for #1,#3,#5 injectors imbalance and no circuit to the fan motor. Did some research and found low oil and/or dirty oil could affect the injectors, I changed the oil and all filters also removed the EGR and cleaned it too.
I started the truck ran it, stopped, and restarted and let it run for a few. I cleared the codes and did another test. The only code that came up was the Cooling fan P0528 again. I let the truck run. All of a sudden the truck revved up and I could hear the turbo kick in and the engine seemed to take a life of it's own. I did another round with the scanned and found codes for Cruise Control popping up P0565 through p0569 and the p0528 again along with a p1000.
My truck is not equipped with cruise control, but apparently that is what might be making the engine surge. What do I do? What this might be???
2004 f450 with 6.0. Was driving down the road when it started losing power like it was starving for fuel. It carried on for about a mile then died and will not start. No codes at all and we put a new fuel pump on but still wont start. Put a rag with gas in the air box and will run but rough.
View 6 RepliesSo the 04 is rolling down the road when the cluster gauges ping, the truck loses power/acceleration but the radio never goes out. Have a new alternator and batteries passed a check. It has done it three times. We are 1100 miles from home. OBD and cigarette lighter fuse was blown as well.
View 10 RepliesI've got a 2005 F350 that i recently did balljoints, tierods and shocks/stabilizer on. Just stating that because i don't believe anything could be binding up to cause this.
If i am to take a left turn, more than 45 degrees, the truck will seem to lose power assist on the return to center and be very stiff when i return it by force until i jerk the wheel past center and let it come back the other direction and it seems to regain power assist.
Also, the steering is just generally bump. I have not driven a better condition 2005 to tell the difference but i'm sure this isn't the way it's supposed to be
I am not having any issue with braking force, as of yet. The first winter i got the truck i blew a power steering line that goes from the gear to the cooler, in which direction i don't know. It's been a year and a half since then so not sure that caused any failure.
Before this symptom the pump would whine when on left turns only, no problem turning right if i feel like doing right turns the rest of my days. I guess what i'm getting at is, does this sound like a bad pump? Bad gear? Both?
Took my 2011 F250 in to the dealer where I purchased it concerning intermittent misses on gear changes. The dealer had no history or knowledge of problems with shift flares. I was told they would check it out. Bottom line, their checking it out yielded no results, no action, and no "engagement", pun intended, to resolve a serious concern. How did others resolve the issue when it came up?
View 14 RepliesWe have replaced 4 fuel pumps on a row.
Voltage is good...even ran a fresh circuit.
Ran new supply lines
But, can't seem to understand the continued drop in pressure. It usually takes about a day of driving to crater after a new pump/filter is installed.
It never dies, just loses power and drops the truck to an idle. Funny thing...if I shut the truck off and turn it right back on...full power for a short period!
The truck is used on a ranch that has plenty of rough roads...thought inertia switch maybe but i believe that would stop fuel completely right?
I am totally stumped and so is the mechanic.