Ford Super Duty (1999-2016) :: F250 - Trans Shifting Hard / OD Light Flashing / Code P0720
Apr 11, 2014
Just got the transmission rebuilt in my truck and other then shifting hard sometimes it has been doing great, Hooked it up to the goose neck this evening and everything was fine then went to back it up and pull it forward and after a short distance the od light was flashing and when i ran a check on it it was p0720? The transmission has less then 1000 miles on it?!?!? 1999 Ford F-250 7.3 Automatic....
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I have a 2001 F250 Super Duty with a 5.4L engine, regular cab. The truck has 149000 miles on it. I bought it about a month ago and had the transmission rebuilt, the spark plugs and coils replaced. Apparently the shady dealer I bought the truck from had power washed the engine and there was water in 3 of the spark plug wells on the drivers side. When I got the truck back from the transmission shop and backed it out of the parking lot, the OD off light started flashing and the SEL light came on. The code showed to be a P0720 to which the mechanic at the transmission shop replaced the speed sensor on the top of the tranny.
He said if it comes on again then the speed sensor on the rear differential could be the problem and that he would have to charge me to replace that sensor since it isn't covered under the warranty for the transmission.. I replaced the sensor myself on the rear differential yesterday and thought the problem was fixed. I drove the truck around for 30 minutes with no problems, until I put the truck in reverse, then the OD off light started flashing and the SEL light comes on giving the same P0720 code.
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I have a 2000 F350 7.3 4x4. It began giving intermittent tow/haul flashing light, when going up or down hill but would clear and drive next time truck was cycled off/on. No ABS lights and code reader generated P0720 for the output speed sensor, now I can get it to generate just driving slowly fwd and rev a few times. All of this has been in the last few days.
Truck will stall if I take it up a slight incline with the fault. I replaced the sensor on the top front of the 4r100 transmission and also replaced the sensor on the rear differential after giving up on looking for an output sensor on the transmission. I know the 2WD transmissions have an output sensor but is there one on the 4WD version? I have read several past threads discussing the P0720. I am hoping to confirm what sensor I need to be looking at and where it is located in this application.
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I have a 2007f550 auto trans with a flashing tow/haul light and a code of po791 coming up. Flashing light will clear in k/o position and remain off until placing selector in drive,after two feet or so of travel,an audible clunk and the trans acts like it is in third gear. Reverse is no change and highway will not shift into o.d. The iss "A" is listed as the culprit but ford doesn't list a iss a.
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I have a 97 F350 5.8 with E40D trans. I bought the truck with it shifting hard thinking maybe a simple filter/fluid change would fix it. It may have worked a little but did not fix the issue. There were 3 or 4 codes that I have already cleared up with new parts. I am still getting a 327 (something with EGR?) and 629 (Converter clutch control circuit failure). These show up in KOEO and KOER self test. The O/D does not flash ( bulb does work).
Parts that have been replaced: VSS, MLPS, new connector going into solenoid pack (tabs were broken), TPS. Removed the trans wiring harness and there is no damage or loose connections. When I replaced the solenoid connector I noticed there was some trans fluid in the connection. I cleaned it the best I could and reinstalled with dielectric grease.
The truck runs fine and shifts in and out of every gear fine its just shifting hard. If I unhooked the battery it will shift perfect for 5-10 minutes but then the hard shifting returns.
The only other thing I can find with my research is maybe the solenoid pack needs replaced. I figured if I take it somewhere they are going to want to rebuild/replace transmission. It seems like it can't be something very major since it will shift fine when reset...
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F250 7.3L diesel started to flash OD light, goes into limp mode, code p1747. No other codes. Have had issues for a couple of years where the truck would not shift into gear for awhile; sometimes a couple of minutes till it would engage. Have done lots of diagnostics. Visual check harness. Have 12v on pins 1&12 on harness at transmission plug. Plug had some ATF visible, but cleaned it up and continuity good. (with 4" exhaust hard to get to connector).
Checked all solenoid wires with a DVM back to plug at PCM for continuity and shorts, all good. Pulled transmission pack and checked resistance on all solenoids except temp varistor all within specs. Removed Banks Trans Command and rewired tranny plug and pulled Ottomind chip from PCM. Still goes into limp mode and throws code. Did not see any bad solder joints or burns inside PCM by the way.
Seems like PCM right? But here is a complication to my issues. For over a year I have been having electrical issues like the radio not working and windows not working intermittently after starting up. After running for awhile or on restart would work fine. Sounds like the Instrument Cluster issues or relays.(?)
Will be pulling IC and checking for any bad solder joints. However, did not throw p1747 till just recently and now my radio has really gone wonky. It comes on when key is on automatically and then proceeds to cycle through settings; AM-FM-CD.
So questions are, "Is it possible that a bad Instrument Cluster can cause a p1747 code?" "Bad Ground to Tranny" "Can a bad PCM cause a electrical issue in IC??" "Are these 2 separate issues?"
2002 f250 7.3L, 4R100 automatic trans, ~180,000miles
Banks Stinger package, 4" exhaust, TransCommand, (now removed).
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I have a 2003 Ford f250 5.4l brought it to the shop today and they said the pcm isn't communicating with the trans. The truck hesitates and stalls out at a stop. idle is OK a little studder. OD light blinks also. I put new ho2s in, new oss from ford, new plugs and coils (motorcraft).
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My truck started acting up the other day with a flashing Tow/Haul light and CEL. The codes for the transmission were P0752 and P2700. I swapped out the SSPC-A solenoid unhooked the batteries for an hour and there was no change.
I hooked up a 100lb oil pressure gauge to the 1/8"npt outlet on the side of the tranny. At startup it immediately pegged the gauge....forever, lol. The gauge is toast now. Upon starting is has oil pressure visible in the see through line of the oil pressure gauge. But....if you tap the throttle in park for a second, the line looses pressure (by seeing the oil go back toward the transmission). Without pressure, when you put it in drive, it takes about 5 seconds at idle to build pressure and engage. If you give it the slightest throttle before engagement, it won't engage.
Also, as probably expected, the transmission hunts a bit with rough shifting.
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Having this issue for a while. Finally have time off work to dig into it some more. 00 ex, v10. Intermittently flashes o/D light and shifts hard. I replaced 2 out of the three speed sensors. One at the output and the other on the axle. Only active code is the p0720 output shaft speed sensor circuit. Last weekend removed and inspected harness, did not electrically measure it tho. My question is: intermittent problem? I drove it today to see if it was still doing it and it drove like a dream! Haven't had the battery disconnected or anything, just sometimes it does it and other times it a smooth ride.
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I have a 1997 f-250 heavy duty with the 7.3 I have been having problems with very aggressive and hard shifting. While it is acting up the overdrive light on the shifter blinks. This problem goes away and it might be good for a month or so, But it always comes back. I have had it to a professional trans tech, He replaced a part on the side of the tranny. I thought it was fixed, But now it is acting up again.
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I have a 2002 ford f250 with the 7.3l diesel. I recently installed a ts performance chip. On my pcm. And after i first tried all the different stages I didn't like how my transmission was shifting hard. So I contacted the manufacturer and he told me they could reprogram the chip for smoother shifting. So I removed the pcm and removed the chip. But when I went to reinstall the pcm I bent one of the pins on the pcm some how.
So I took it back out and straightened the pin with pliers . i reinstalled it back in the truck. Only to find when I reattached the battery cable I have no power to anything ignition ,horn, lights,Cigarette lighter etc. So my question is if the pcm is bad, or not contacting properly due to the pin being messed up. would that have anything to do with the lights and horn and all that? I suspect its the gem bsm or Vsm. Whichever one my truck has. But really not sure because everything worked fine just 20 min b4.
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I have been having hard shifting from 1st-2nd when cold. Rpms up to 2000 and let off then goes into 2nd. After that, she shifts fine and shifts well until next morning when she sits overnight. Build tag is August 09, 2001, so no old mechanical diode? Took a sample of fluid and it is dark red (pic attached) and smells like hydraulic fluid...I don't think it smells burned. Does it sound like the calve body 1-2 shift or solenoid pack or needing rebuild?
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The truck belongs to a very good customer of mine and is a 05 f350sd 6.0 td with 5r110 torqshift tranny. The vehicle presents with these symptoms and codes....
-there is a delay from p to r and its intermittent, sometimes it will be in a weak reverse where it wont creep unless you give it some gas, sometimes it will hit reverse hard after this. sometimes it bangs reverse
-there is a delay into drive intermittently with the same symptoms as reverse where sometimes it bangs and sometimes it will take a little throttle to get it moving
-once the trans is hot (operating temperature) it has trouble downshifting. my solus tells me sometimes it tries to start off in 3 or 5 then sometimes it will bang back down into first and almost chirp tire with little throttle input
-tow haul light will flash after several miles and then it only has 1-2-3-4 no 5-6. then the starting off symptoms get worse
-throws codes for
p0766 shift sol d performance/stuck
p2701 friction element b apply time range/performance
p2703 friction element d apply time range/performance
p0700 trans control system fault.
So far the ideas i have are as follows
replace solenoid D
direct clutch replacement and seals for corresponding drum
torque converter replacement and pump replacement
harness rub through between pcm and transmission
The truck has had similar issues a year ago. Upon testing line pressure i found it was out of spec and replaced the epc. (electronic pressure control solenoid) and this cleared most of it up . I have had the pan down many times and the fluid has not been burnt and there is little debris in the pan. nothing i would consider beyond normal wear. Tomorrow I will be dropping the pan again to inspect the magnet and fluid as well as the condition of the harness. i will post my findings at that time. I am hoping between now and then some of you will be able to point out a few possibilities to get me on the right track.
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2000 powerstroke 4r100 transmission. It has 155k just had it rebuilt and the shop is having a night as am I. It was shifting hard and the o/d off light would start flashing after you drove it a while. Its still doing the same thing and the shop checked the whole wiring harness and replaced the accumulator twice believing they got a bad re-manufactured one. The only code I can pull is a 605 pcm read only memory error. Could the cause be a bad pcm? The shop doesn't seem to have a clue at this point and I'm out 2500. IV taken it back twice now and Iv driven it a total of 35 miles since the rebuild...
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So I have a 1995 f-250 4x4 with the 460 and a E4od. So when I bought the truck I drive it two hours home and when I got into town it started shifting really hard and searching for gears. So I flushed it and installed a new oil filter because the oil in it was brown. Very brown. And smelled awful. So it shifts good, but what's happening now is that it shifts good in drive when it wants to.
In the morning it works great but when I get in it to leave after school it shifts really late (around 2900 rpm) and hard. So I put it in first and then into second but when it's time for third and I put it in drive it shifts back to first. But if I stop shut it off for a few minutes and turn it back on it works fine. It only does this after it's been sitting in the school parking lot all day. I replaced the mlps but not the connector due to I didn't have time at the moment. Could it be the tps? Something mechanical?
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Well I went about 20mi to pickup a door for my inlaws. Get about a mile from home and my tow haul light is flashing. Truck starts shifting strange then I smell it trans fluid. If course I get stopped by a red light shut it down. Started and had to rev to get it to move now four houses away from home coast into the drive shut it off and trans fluid is covering the entire bottom of my truck. Even the rear tires inside are covered. I had the wife crank it and I blew a trans line near the ext. trans oil filter. What are the chances that I did not toast my trans? No prior shifting or slipping problems before this mishap.
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I have a 2006 6.0. It's hard to put into to drive and for you to get it moving you have to just about floor it. The tow haul light is flashing but my bullydog won't pull the codes. It stops moving after like 30 to 40 ft after you got it moving and acts like it's in natural. If you turn it off and back on it sometimes will move another 30 to 40 ft sometimes. It also sometimes if you put it in reverse won't let you give it gas. Like you can push the pedal but the rpms won't climb for this reason I'm thinking something to with a solenoid or fuse or something along those lines and also because if you restart it will move again. I don't know much about transmission. I'm taking it to a shop tomorrow for them to try and read the codes. If they say the transmission is toast i already located another one 2 hours away to swap in which I'll do myself to avoid the high cost of the shop which also I'll look to yall for guidance. I drained some of the transmission fluid and didn't see any metal flakes. Should I pull the pan as well and look if nothing is coming out in the trans fluid ?
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I have a 2002 F250 SD V10 4x4, that just started to randomly misfire [does not matter if the vehicle is in motion or in park]. I scanned the OBDII and found pending code P0720 (Output Speed Sensor). The CEL, O/D light, nor the ABS light illuminate. The speedometer functions normally.
This occurred Saturday after we got 12-18" of snow. I cleaned out the driveway, took a short drive (~ miles) & parked the truck (no symptoms). Later we went to 2 stores and then on the way home, the misfire started. The next day the misfire continues.
I have been searching & come up with the same posts that say the issue is not the OSS. It's usually a bad COP or bad wiring @ the OSS. The symptoms are not the same as when I had a COP go bad (only misfired under load between 1500 & 2500 rpm).
Personal issues: My truck does not fit in my garage, it's dark (and usually below 30 F) before I can get to look at it in the evening. Also, we are supposed to get another foot of snow tomorrow night.
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Im having an issue with my 2000 f250 7.3 diesel. 4x4. The od light is flashing and the tranny is kind of jerky when it shifts. Also my truck won't go into 4 low. (I have shift on the fly) and every time I put it in park my truck revs up to 2000 rpm for a few seconds. I do have a ts 6 pos. Chip with can tunes on it. And I have already replaced the IPR. It does it even in stock setting.
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2006 E-350 Dually Ambulance Chassis with the 6.0... Approx 125000 miles.
Recently, the truck started an issue. its an every once in awhile thing but has been doing it more recently. The OD light will start flashing and the vehicle will start to have clunking in the tranny and start shifting rough. ABS kicks in making it hard to stop. Once you turn the truck off and back on, Its fine until it does it again. Im connecting to a scanner tomorrow to see if i get any codes.
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1998 F-250 LD 4x4 463,000 km.
My truck begins to flash the OD light after driving about 10 km. So I borrowed a friend's scan tool and got a P0503, and P1500. So having been pointed to the vehicle speed sensor, I connected TORQUE and watched closely vehicle speed. Driving at a steady 80 kph it will jump rapidly up and down, from about 72-92, while the gauge in the instrument cluster reads a calm and steady 80.
Which sensor and wiring do I need to inspect? Rear diff or on the back of transfer case? Oh, and the ABS light is NOT on.
Sent from Nexus 4. IB AutoGroup
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