Ford 7.3L Power Stroke (1999-2003) :: 2001 F350 - Missing And Shimmy - RPMs Will Drop A Little
Sep 3, 2017
I ran out and test drove a new to me 2001 F350 7.3L tonight. Everything seemed good, until I got back from the test drive. I pulled in and was sitting there with it idling. It seemed to idle fine, then a very small miss and very small shimmy then idle fine again; then another small miss and another shimmy. It continued like clockwork. Every time it seemed to miss and shimmy, the RPM would drop just a little, but not much. Does an ICP sensor sound like the problem, or maybe something more serious? 2001 F350 7.3L with 235,733 miles new trans, turbo replaced at 150,000 something miles. No blow by. Idled fine before driving, also drove fine. It doesn't seem to surge when idling, just kind stalls and shimmys for a split second then idles fine for a few seconds.
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Have a 2003 F-250 with 174,000 miles. Recently replaced CPS and ICP and it's running much better. It normally idles at about 700 rpm. Lately, after driving for any distance above ~40mph, when I come to a stop, the rpm won't drop below about 850 rpm. If I shift to neutral (automatic trans), the idle drops to around 700. At the next stop sign/light, it's back up to around 850.
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the wife's '01 Excursion has developed a new idling quirk. While sitting, it will briefly drop rpm's. You can hear it, and see it on the tach gauge. No other noises or problems, except for the brief drop in rpm's.
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My '03 7.3 is "surging" on idle. When warmed up, and idling, the RPMs will drop by 300 or 400 for a few seconds and then will correct and shoot back up. It cycles like this (every 5 seconds-ish) continually . I just put in a new IDM and checked the UVCH - is there a separate idle control mechanism that I need to have a look at? (2003, 7.3, 214K, stock).
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2003 7.3 excursion.. The truck starts every time revs up and idles about 3 seconds then the rpms drop and it tries to stall out catches itself then revs backup and idles rough similar to if you have got air in the fuel lines from changing the fuel filter.. About 1 in five times the truck will stall out and it starts and immediately and idles rough but the rpms and everything runs at speed and rpms don't drop again! This is a reman engine/transmission recently installed.. The mechanic who installed it was unable to figure the problem out.
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Recently I have noticed that when on a tune other than stock I am getting a surge at idle - my RPMs drop to around 621-630 then shoot back up to 660-675. On my stock tune my RPMs stay around 640-667 and don't cause the surge (felt as a shimmy so to speak). Is there anything else that causes a similar symptom? I attribute it to tuning due to it only happening when running anything but stock but could be wrong.
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Lately I have been having problems loosing power. Truck wants to miss mostly going up hill and runs sluggish I'll pull off the road and let it idle for a minute and it will run fine. And it is only occasionally some days it don't happen at all and other days it happens quit often. New fuel filter, oil is good, had it on the scanner and isn't throwing any codes. Around 230k miles newer injectors.
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I have looked through a ton of threads to see if I can find one similar to my problem but have not. I have stock setup but had a dealer installed anti-theft device. The first time it would not crank, it was like the the anti-theft plug was missing so I checked out the key, tried the spare and finally removed it all together. I checked all the fuses and swapped the Starter relay for another of the same part number.
I later sifted it into neutral assuming it was the P/N Switch and it started. This continued intermittent for several days but then Neutral wouldn't work. I got under the truck and pushed on the actuator rod for the transmission and it started again for a few days. If finally failed again and I had time to buy a replacement switch.
Once installed I verified I had back up lights in reverse but still no crank. I have since pulled off the starter and had it verified as good. Is there more to setting/adjusting the neutral switch or is there something I am missing before I tow it in?
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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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My feed truck (2001 ext cab 4x4 7.3 198k) had a cold starting issue I fixed with new gp relay. Now I noticed when it gets down below 30 degrees it has a cylinder miss until motor warms up. I don't doubt injectors are in my future. I was wondering though if that is common for worn injectors or if maybe something else has gone haywire and how long can I run it like that before something else tears up? after about 7-10 min the miss goes away and I don't notice it. I would like to get through the winter before messing with it or having injectors put in it...
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I just bought a 2001 F350 diesel with 120k miles on it a couple weeks ago. Friday I headed out to Oregon with my 16 foot enclosed trailer filled with jet skis (about 4-5k pounds) for a competition. A few minutes after being on the freeway I noticed the truck did not have good power. About 30 min later while climbing a steep grade the truck almost went dead.
I started at 60mph and by the time I got to the top i was at 15mph with the throttle pinned. the motor sounded funny and shook the truck more then normal. After wards on the down side of the grade the truck started to act normal. I took it to my buddies house and switched trucks because I didn't trust if for the 13 hour drive.
Today I talked to a mechanic at the dealership and he said that it sounded like injector o-rings to him. I went home, pulled the valve covers and started the motor to see if anything is leaking. steam was coming from the valve area and the down spouts on the injectors was flowing oil. The thing that looked especially abnormal was one of the injectors looked like fuel was dribbling from it. I don't know if that is a problem or not. I couldn't tell if it was fuel or oil but no other injectors had fluid coming out near the wire connections.
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2001 F350 just rebuilt the turbo, did the EBPV delete now no power.
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The other day I had been driving about 3 hours and truck went dead then back on, it happened two more times in about 30 minutes.
(2001 F 350 Dually 7.3 A/T 2 wd.)
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I drive a new to me 2005 F350, he has a 2001 F350. While we were talking he said he didn't think his pickup had the power it should have. He pulls a 5th wheel camper that weighs around 8000 pounds fully loaded. He said it takes a couple of miles to get to 55 mph, and it is hard to hold the speed. It doesn't have the power it did when he first got it last year. He was told that a diesel is slow getting started. He rode with me in mine, when I dropped it about half throttle to pass a slow car he said he could tell mine had way more power.
His check engine light is not on, it starts good both when hot and when cold. It runs smooth, no miss as far as I can tell listening to it. What are some common issues that could cause this? He did just change the oil and fuel filters, not sure about the air filter. He said the power loss came before he serviced the engine, and did not improve after the fuel filter change. Where to start? He was also told to check the filter inside of his fuel tank, so he is getting ready to drop his tank.
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I have a 2001 F350 7.3 the truck will at random times loose power and almost shut down. A while back I had an issue with the uvch plugs and changed that out. Truck ran fine till I got some dirty fuel from a diesel tank at my friends farm. I did the hutch mod cleaned the tank and now have a frame mounted screw on filter before the pump. I cleaned the fuel bowl and changed the filter. Fuel pressure stays at 59psi and drops to 56psi wot. The truck is tuned with an edge programmer. After these mods the truck ran awesome for over 2000 miles. Now it has the above stated problem. I have fuel and hpop guages along with egt and boost. During the problem egts will increase rapidly and it seems like it is starving for fuel.
Hpop gauge reads 3300psi or above during wot and shows good pressure during these mishaps. I have auto Enginuity and I get a different reading at wot of only 2600 psi. The hpop gauge is tapped into the icp sensor per instructions and has been installed this way for a while with no issues. The tune has been on the truck for over 40000 miles. The only thing that I can come up with is it will occasionally throw a p1211 under wot or pulling my Gooseneck Dump Trailer when loaded. However it acts up sometimes and doesn't throw the code. Sometimes you can shut it off and start it back up and it's fine other times it will last for the whole day. My only guess is low pressure from the hpop but I don't reflect this from my gauge only on AE at wot. Wouldn't a bad pump act up all the time? Am I correct to think it is just the ipr?
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I have a 2001 F350 XLT with cloth seats. In 2003 I upgraded those seats to power seats.
- When I upgraded to power seats I did not run a new power wire. Since my 2001 was at least fused for power and heated seats I located the Power seat 30amp power wire.
- That wire is located on engine compartment fuse #15 (Circuit 5298 as I recall) and Dark Green. It comes through the firewall and runs down the drivers side kick panel along the floor and then intersects with the power and ground seat belt wires that ran under the seat.
- The ground wire was coiled and attached to a ground stud behind the drivers side kick panel.
About a month ago I had a mouse get in and chew my seat wiring to shreds. I built my own harness and am good to go there, however since I had these seats all apart I decided to replace the foam and add HEAT.
So that brings me to the specific question. In the engine compartment fuse box, there is a 30amp positive wire for Heated seats. My schematic says it is a 14 gauge wire RD/BK on circuit 1153.
Where in the heck is this wire? I have literally tore the dash apart looking for this wire.
- I have verified the following with my fluke continuity tester.
- It is not part of the four customer access wires that drop on the right side of the interior fuse panel.
- It is not part of the tow wire bundle.
- I have checked the bundle that the Dark Green Power seat wire is in and there are no RD/BK wires in that bundle. I also poked the other 2 14 gauge (Yellow/Blue) wires in that bundle and verified they are not them.
-I have checked the three wire bundles behind the passenger side glove box and was unable to locate.
- I have verified it is not stored behind the compartment below the cigarette lighter.
I am looking for info which wire I am talking about and knows where Ford stored them when not used by having the XLT Trim with cloth seats. Yes I am aware that I can run an additional wire with a 30 amp fuse to the batter, but I would prefer to use the system and fuse that was designed for this.
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My one owner 2001 7.3l F350 w/ 265K miles died a few days ago at a traffic light. First time it has ever died on me other than a CPS. This dying was an almost instantaneous with no CEL light, unlike the CPS's hiccuping and dash light up. I put it in park and it started right back up like normal. I continued about my errands and made it home. I have since driven it two more times the same distance and it has not died.
What I have done on this truck the past year.
-Replaced ICP -3/14
-Rebuilt IPR and checked IPR plug -6/14
-Replaced fuel filter every 7500 miles and I am probably due another one of those now
-Replaced air filter - 4/15
-Cleaned out both the sensor and the exhaust back pressure tube
-replaced CPS w/ dark blue unit from RiffRaff in -8/14
-checked main harness over driver valve cover and placed a piece of heavy duty wire cover wrap where they touch the valve cover -8/14
UVWH replace in 2008
Have a new IPR and pigtail coming just because I wanted to eliminate a bad solenoid on it. I also have a Torque Pro w/ blue tooth adapter on an LG tablet that I have yet to set up....but am working on it Will the truck throw any codes if the CEL didn't light up?
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I change my motor in my 01 f350 ccsb to a forged rod one from a 97. When I put the thing in my inexperience cause me to screw up my torque converter in turn ruining my transmission. So after a rebuild I put it back in and she fit like a glove. Ever since I put the engine in i get a vibration at idle.
After I realize I screwed up the torque converter I figured that was the cause of the vibration. But now I know the trans is in properly I still have this vibration I'm thinking it's the position of the motor. I installed new motor mounts when I put the motor in but they were quite a bit off from the original points on the cross member.
My only idea to rectify this was to reinstall the original ones and try to position the motor back where it was prior to the engine swap. Or should I be looking elsewhere?
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I've replaced the alternator and starter recently and both batteries and the truck ran fine befor that. But it sat for roughly 2 months and now it seems as if its not getting fuel. Will start with a shot of ether but will die as soon at it burns it off
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I have a 2001 F350 4x4. My transmission went out a while back. It would only go in reverse. I had it rebuilt and it is still having issues. When I take off with speed from a dead stop it shifts late...about 3000 RPMs. It shifts fine until it shifts into overdrive. It will go into to 4th then right into overdrive causing the truck to act sluggish.
I'm looking into my truck not starting well at any temp too! I didn't know if it could all be connected some how. My mechanic said that when he first started my truck it had a MAP sensor code. He also said that when he unplugged that sensor it didn't change the way the truck ran..Still like crap. I have changed all glow plugs relays and even did the mod to it.
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I have been having problems with my truck for about 6 months now. It start in Sept when my fuel pump went. I got a new pump and went to change it just to have the back clip break off. I fixed the line after getting 2nd degree burns from the boiling water I had to use to expand the line and installed the new fuel pump. Didn't fix anything.
At this point is was dropping below freezing every night ( I live in Canada in the mountains) so I thought it might be my plug relay again... changed that. After that my started has always missed so I figured I would change it out and sure enough the power bolt on the starter was broken. Changed it.
Then it started smoking and I read up on the quarter trick so I figured why not try that. I checked everything and they all checked fine but I am a glutton for punishment and figured I would do that valve cover gasket. So opened it up to find one of my glow plug wires on my harness was burnt up. I have a spare truck for parts so I grabbed the wire and replaced it. Still no change.
Today it was spitting out the usually raw diesel that I have gotten use to but when I was opening the gate to get a manlift for work I smelt oil just to find my turbo coved and the V had a small pool of oil happening there. I added 4L of oil and tightened up my valve cover back bolt on the passenger side... it may have fixed the leak but didn't have time to check.
I backed up to the manlift and it lagged a bit so I gave it a pump of the peddle and it died. Now it won't start. Charged batteries and tried after it cooled down but still no go.
In short my truck has been smoking for about 4 months now. It shutters at low RPM and stalls at the bottom of hills if I gear down on the hill (we have really steep hills around here). I have changed my oil three times in the last 6 months but it keeps coming out black (which it always has). No water in fuel or oil. Once and awhile it had problems starting when it was warm but after bellowing out massive amounts of smoke it would start. The truck turns over but wont start. There is no power where it died so I have to come home and charge the batteries every time they get low but even after it cooled down it still wouldn't start.
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