Ford 7.3L Power Stroke (1999-2003) :: High Idle After It Sits About A Minute Warming Up
Feb 14, 2016
I have noticed thru the cold months after I start my 2001 F250 7.3L 4X4 after it sits about a minute "warming up" that it goes into a high idle. The high idle will stop once I press the brakes. Is this normal?
I think this is a unrelated issue, but just started over the weekend. Was riding home, and pressed my brakes and the pedal moved almost to the floor. Not normal conditions for my truck. Usually the pedal is very stiff. I have noticed that my power steering pump has had a hum for months. I changed the fluid (ATF Mercon) within the last 6k miles and that calmed it down a bit.
After the pedal went to the floor, the hum seemed to quieten down even more. The power steering still works and the reservoir has adequate fluid and so does the brake fluid reservoir. I haven't noticed any leaks around the truck. I'm going to bleed the brake in an hour or so. The brakes pedal seems stiff when I press it after the high idle, but then it gets soft after a pump or two.
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Every morning 1.8T idles high when warming up usually takes a minute or two to idle down. When your running late kind of annoying when I drive before idle goes down to normal brakes seem way to responsive and jerky...
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Having issues for a couple days now. Starting with the last two weeks while driving, the water in fuel, wait to start, and check engine lights would flash on. It would resume with more fuel as if nothing happened. Twice on separate days there was enough water that it shut it down in the middle of driving and it would have to be parked then restarted. One morning went out to start the truck, was inside for about 10 minutes and heard the truck shut off. Went out to see if it would restart and there was no wait to start light. Fuses have been checked and none are blown. Been shutting off like this for a couple days while trying to warm up, so it hasn't been driven because it hasn't ran long enough. Yes it's plugged in because of the cold.
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I have a 99 f350 and I can't get my truck to kick up the idle when it's cold out. There have been mornings in the negatives and still nothing. I replaced my egr tube and cleaned the exhaust pressure sensor. My exhaust back pressure valve opens and shuts while driving at slow speeds but not while at idle, but I don't know if that's related. I replaced the oil temp sensor with a ford motorcraft one. And I plugged my intake air temperature sensor into a buddy's truck with the same motor and his truck still idled up no problem.
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I have a 2002 F250 7.3 4WD automatic with 313,000 miles. A week ago it started stalling after it idled for 10 minutes. It acted like it wasn't getting fuel. It would sputter a few times then just quit. I changed the fuel filter and the truck ran fine the rest of the day. Since that day, it has acted the same way every morning at 1st startup. It idles fine for 10-20 minutes (depending on how cold it is outside), then hesitates a little, then stops. After going through 3 new fuel filters (thinking I had bad fuel), I stopped putting in a new filter every morning, and found that if I just waited 4 or 5 minutes, it would start and run fine after that. It then runs fine the rest of the day.
After it stalls, it will not start right away. I need to wait a few minutes. I've tried draining the fuel filter bowl also. No luck. I tried a new Cam Positioning Sensor. It seems to be related to temperature. It's been getting down to 30 degrees Fahrenheit the past few mornings. It starts fine and idles fine until the temp gauge just starts to move. Then, the stall happens. My fill-up just prior to this happening was with B20 Bio Diesel. I suspected that for a while. But, I've ran all that fuel through plus 4 or 5 regular diesel tanks through, so I no longer think it was related to that. It do see the check engine light when it stalls. I had a shop read my codes and the only code was bad KAM memory. The mechanic said that code shows up all the time on these engines and not to worry about it.
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2001 F 350 7.3 183,000 miles.. The problem is the longer it sits the harder it starts.. when it does start it runs VERY ruff!!! it takes 10 min or so to run on all cylinders.... This is my first diesel..
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Here's the deal. 99 Powerstroke out new injectors and orings. Did orings twice to make sure i didn't damage it. New turbo, new utvc gasket, new ipr, new fuel pump, I new complete engine wire harness. I pulled the injectors and ran in another truck no problem. New injector cups compression was all in the 300-375 range. Any cold start smokes like hell. Goes away when driving after the first time of hitting boost. Spits and shudders for a few seconds until boosting. Every time I stop it starts smoking again at idle. No power loss not using oil. Can't get a grasp on this smoking issue. When cold start I kill millions of mosquitos in a one-mile radius.
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So finally got my truck running due to a fuel issue. Anyways been driving it for a week or two now, and I have a strange problem idk if it has been covered here or not.
Driving around tow etc if you come to a light or whatever and stop the rpms stay at 800rpm. Now if you shift it out of gear and back into drive the rpms settle back down around 650. Where is should be.
My guess is the torque converter is not disengaged all the way when it stuck at high rpm (800-900) for this situation. No cel, slippage, or crazy noises
2002 7.3 power stroke all stock right now @160k black crewcab
Previous owner had a tunner on it but not anymore. Could it have smoke the trans???
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Does the 2002 7.3 have an automatic high idle in cold weather?When you start it after it runs for a few moments it goes into high idle until you hit the accelerator. I had a 96 powerstroke before this one,it didn't do this. Just wondering?
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My truck was shuddering in od. So as I last effort thinking it might be injectors I pulled all of them and replaced all of the orings and valve cover harnesses. After all of this was done seemed to do nothing at all. Now a new problem has surfaced. It's having idle problems. It will now idle at 780-850 instead of 650-700rmps. Also on deceleration it will miss pretty bad. Checked all of my injectors again all connections are good and all of the injectors are tight. Not burning any oil. So I unplugged the icp and bam runs like a top perfect running engine. So I bought a new one and plugged it in and itake doing the same thing. So what is going on! Also it was throwing a random check engine light but wouldn't bring a code up I'm completely lost....
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I hear a whoosh whoosh whoosh sound coming from the exhaust when its warming up in the morning. What is happening?
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OK, truck is 2000 F350. I am heading on a 2000 mile roadtrip to Yellowstone for my wife's 40th birthday in two days. What was our rock of a vehicle is now causing me severe anxiety.
Over the last few days the truck has been difficult to start - almost stops turning over as if the batteries were low. So I ignored it because if I plug it in, it starts fine and if I drive it and it gets hot - it starts fine.
Tonight while driving - I noticed a high idle and then it went to normal - I thought it was weird and a few miles later at a stop sign it struggled at idle, sort of loping but not romping very high and the over drive light started blinking. When I got home when I went from drive to neutral it goes to high idle and then the overdrive light blinks. The first time it blinked it went off when I pressed the OD button - but now it continues to blink.
Would low batteries be the root cause of this? I will continue my search for blinking OD light but I thought I would get this in the queue in case this is bigger than I can handle. I have 48 hours to resolve this issue - leaving Wednesday early morning.
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I have a 2000 7.3 and I have a hypertech Max Energy Programmer set to stage 3 in my truck right now (100 HP). I noticed last night when I was going up hill and had my foot to the floor the truck would hesitate for a minute and then lag before it was would catch up to itself. I did it again on some flat ground and noticed when it did do that my boost gauge would get to 20 and then fall to Zero. If I start out and gradually get to the floor without punching it the truck drive fine. How to fix it?
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Well, long story is that I starting have problems with my 2000 F350 Dually 7.3 PSD about 6 months ago ( ~10K miles ago ). I have sunk almost 5K$ in mechanics and the problem is still present.
By troubleshoot, I do not mean try this, try this, as that has been what is happening. I mean making test measurements and diagnostics. I am fairly mechanically inclined, but I am no mechanic. Looking for primers on how the 7.3 PSD works.
Symptoms: After the truck sits 12 to 14 hours, it starts and idles fine ( ~ 700 RPM on the 'Dash Tach' ) just as it has always done. During the first 5 miles of driving it, the SES light comes on and it sputters, stalls, and vibrates as if a couple of the injectors are not firing. It then clears up and the SES light goes out, except that it idles at about 1200 RPM ( 'Dash Tach' ).
It runs fine like this the rest of the day, If I shut it down it will start right up and run fine, but it has the high idles. Only if it is shut down longer than 12 to 16 hours do the symptoms, other than the high idle, reappear. The high idle is constant. Also mpg have fallen ( 13 opposed to 16 ).
It does not seem to be related to ambient temperature, or the amount of warm-up idle. I have idled it for three hours on startup and it is fine, until I drive the first 5 miles or so.
Now, I have had three mechanics work on it and they have replaced: the ICP sensor ( 3 times ), the Fuel filter ( twice ), drained, flushed and refilled the HPOP, replaced both sides of the valve cover wiring harness, put in a new IDM, fuel heater, CPS sensor ( 3 times ), fuel pump in fuel tank, EBPV ( not sure what this is ), and the last straw was saying the injectors needed to be replaced ( or at least the O-rings, but while we are in there you might as well ... ).
I bought a cheap code reader and it says: P1316 & P1211. I believe these are the same codes since day 1.
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Lately I have noticed a lot of blueish smoke coming from my exhaust at idle mostly while warming in the morning though it would do it if the truck idled for a few minutes. I took it to the dealer because I have fords ESP but the tech couldn't get the truck to smoke and wasn't getting any codes so he sent it back with a clean bill of health. After getting it back I noticed it smoking again so I picked up the egr valve kit pulled the valve and cleaned it as best I could and replaced the seals, that was last night. This morning it was blowing more smoke than it has before and has continued all day whether cold or warm. I just changed the oil last week and it's still full so it isn't burning any. Head gaskets were done along with studs last month, egr is obviously intact, cat is gone. I'm really at a loss for this, It's an 07 f350 scsb 6.0...
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Was driving my truck normal, got to a stop and the truck staring to idle high and like stuck on third gear and also the tow light (over drive) started to flashing Is like the truck put it self on safe mod. Drove it back home but couldn't do more than 55 miles n hour so I didn't hurt the trans.
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So I just purchased my first diesel a couple weeks ago (2003 f250 Lariat). I love it! However, I'm having concerns about my turbo whistle on it. At idle and while in higher RPMs is sounds ridiculously loud (even at 0 PSI in the boost). I've been doing my research on it and I know the 03's have the loudest sounding turbos because they have less vanes than the later models. I know without a video it's going to be hard to diagnose, but I am wondering if a loose boot would cause a turbo whining sound through the exhaust? I have yet to hear ANY other diesel in person that has a turbo whine as loud as mine.
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My high pressure power steering hose just blew at the "B" nut at the pump. Meaning, the fitting is still in the pump but the line is out. Do I need to replace the whole line or is there a retainer I can swap out?
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I just replaced my 3rd HP power steering line last night( 3rd in 300K, always blows the same point....fitting comes apart where it attaches to the pump.
I'll start, mine have gone about 100K plus or minus 10K, almost thinking about making it a 100K maintenance item.
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Pulled our 5th Wheel up to a campsite we like in the Eastern Sierra, have pulled this trailer there several times before. This trip it felt way down on power and the EGT's were getting up there, I saw 1320 and it would have gone higher if I hadn't backed out of it. It had good boost 24psi averaged 17 to 20 on the steep long pulls. We came home today without the trailer and it ran just fine except once when I really nailed it the emission system light came on and stayed on solid till I turned the key off and on. What is the Emission System light telling me? It ran just fine when the light was on and all indications on the Scangage were good as well a on the Boost, Egt and fuel pressure gauge.
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Story starts when I was cruising down the freeway and the truck cut out, seemed like a CPS or Injector related issue - seemed like a whole cylinder bank cut out. Stopped truck on shoulder, she shuttered and died. Turned truck off and restarted, ran like a top for about 4 miles then did the same again. I restarted it again and drive it straight home, ran like it I usually did.
As soon as I arrived home I did a little research and learned to start with CPS. I replaced my grey CPS with a new, Ford grey CPS. Truck fired up, ran the same that it did before - not the best idle but at 302k I was content. Drove it for a few days and it did it again, hobbled the truck home, although it did do it a few times and the last time it did it was really hard to start.
I replaced the IDM through NAPA. She's a work truck so I wasn't going to splurge for a Swamp Unit, the NAPA one came with an 18-Month Warrenty. She started right up afterward, the smoothest idle I had ever felt and she ran great, except for an SES. I ran the code and it was an IDM code, ran a buzz test and it pulled injector #5 high/low error, but it buzzed (a bit quieter than the others).
Here's the weirdest part, when the motor is cold the SES is constant, but as it warms up it only shows under power and sometimes flashes off at certain RPMs (1700-1900 and 2100-2300) and turns off when engine braking (TC locked) returns at idle. NO engine lights with the old IDM. I've checked the wiring to the injector from the 42-pin to the outer connector. (.6-.7 ohms, what my meter reads without any loads) Injector (from outer connector) reads 3.2 ohms. UVCH is less then 2 months old (GP issues) injectors have less than 5k on them.
Why? New injector solenoid? Bad IDM? Is it possible my last one never fired #5 and it got stuck? Or did my old IDM fry #5? Also I'm going to keep driving it and maybe it'll clear up, there was one drive I took where it cleared up completely. I've done some extensive research on this an i'm stumped. With the new IDM the truck has run better then it ever has.
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