Ford 7.3L Power Stroke (1999-2003) :: 4R100 Trans Won't Go Into 4th / OD Light Flashing And Occasionally Overheats
I have an early 1999 Ford F350 4x4 7.3. I purchased it used about a year ago. The trans was replaced with an ATS 4R100 and a billet torque converter. I have the paperwork for it to confirm it along with the mileage when it was installed. It currently has about 35k on the new trans.
Several months ago the trans heated up to about 200 degrees on my trans temp gauge that was already installed when I purchased it. Not a huge deal and after pulled over and high idling it off I went and no problems.
About a month ago I was towing my fifth wheel when I noticed the temp rising on a level grade. I also noticed the OD light flashing. I made it home and when I went to drive it the next day light was not flashing and it shifted and drove like normal without the trailer.
I towed the trailer again and same thing, OD light flashing and started heating up. I changed all the fluid and flushed it based on the trans flush procedure I got in this forum and replaced with an OEM trans filter. Towed the next day and everything was good. Temp was good and no OD light flashing but I lost 4th gear. All other gears shifted fine, no slipping, just won't go into 4th.
On my way back home the OD light started flashing again and instantly the heat started rising on the trans again. I was finally able to get it into 4th if I let off a little, but as soon as the OD light started flashing I lost it again.
I have a friend of a friend who works for Ford who offered to come over to hook his scanner up. When he hooked it up there was no stored codes from the OD light which we both thought was odd. Took it for a test drive and the OD light started flashing so we could get some readings. He said it showed an error shifting from 1 to 2 and another error when shifting from 3 to 4. I unfortunately forgot to ask him for the specific codes. He tried to read the torque converter info but said my truck was to old and the PID was not supported to read that info.
He said it appeared it was mechanical but without some type of break out box where he can physically shift the gears he couldn't say for sure if it was mechanical or electrical. He did not seem to interested in doing that test for me as he rebuilds trans on the side and said he could rebuild it for me.
It seems my overheating takes place when the OD light starts flashing. It still drives fine and shifts smooth with no issues with or without the OD light flashing. 4th gear usually doesn't work but on a rare occasion it will go into 4th fine which makes me believe it may be electrical.
I am new to diesels but have learned a lot about my 7.3 lately. I recently installed injectors, up pipes, hutch mod, and several other little things so I can get things done myself but am just a DIY'er who can follow good directions. I know very little to nothing about transmissions though.
While working on another issue I did notice there is a large wiring harness that connects up on the driver side of the trans. I unplugged it and was checking the wires and after removing the dirt and crud on it you could see the outside wire sheathing had deteriorated exposing the copper. I bought some liquid electrical tape and sealed everything up. I did look for a replacement wire harness at the time and the one I ordered was very similar but the plug was different so that is why I used the liquid tape at the time. I did not seem to have a problem at the time after fixing it but wanted to mention it here in case that may be an issue.
I also thought swapping out the solenoid pack may fix it. I did not want to drop the trans and send it for a rebuild if I did not need to. I know there are some other sensors associated with the trans like the TSS I think but don't know if they are even related to my issue.
I tried getting the codes from the guy but he does not have them and I can't get him back out. I have an OBDlink device connected to Torque on my phone but I couldn't get it to read trans codes. Could be user error.
Ford 7.3L Power Stroke (1999-2003) :: Hard Shifting And OD Off Light Start Flashing After Driving A While With New Trans
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...
View 1 RepliesFord 7.3L Power Stroke (1999-2003) :: 4R100 Trans Shifts Hard When In Any Position Other Than Stock
I just bought a 2002 F250 7.3 4x4 auto. It had a TS 6 position tuner installed. In stock mode, I got about 11 mpg. I wasn't too impressed. I found that when I left it in 75hp mode, my mileage went up to 21. I drive easy and try to keep shifts at or below 2,000 rpm. The problem is that, when in any position other than stock, my transmission shifts HARD.
My question is: what's going on here? Does the TS change the transmission shifts? Or is the extra bump in power enough to stress the tranny? Based on the factory gauge, the transmission is not running hot. The fluid is nice and pink with no odors or metal shavings. I'd hate to prematurely kill my transmission, but nearly doubling my fuel mileage is hard to pass up.
Ford 7.3L Power Stroke (1999-2003) :: 4r100 - Reverse Started To Go Away
Installed rebuilt transmission 1 month ago. Have noticed reverse has started to go away. Feels like it is slipping or tires are losing traction with a lot of vibration in the steering wheel.(tires are not slipping that's just the way it feels).. Does it worse when trans is up to temp. I suspect feed bolts but want opinions.(Mark K.) All forward gears seem fine with no issues. I have never been under the pan deep enough to access the feed bolts.
View 3 RepliesFord 7.3L Power Stroke (1999-2003) :: 4R100 Transmission - Leak Towards The Back End
I have a 2000 Ford Excursion 4x4 7.3 with 230K miles, around 15,000 miles ago I replaced the transmission with a rebuilt 4R100, lately I have noticed a leak towards the back end where the transmission and the transfer case connects. Some of the bolts on the bottom of the pan have ATF on them, some others however do not. I have had to add a quart of ATF in the past couple of days in order for it to engage into drive when going from Park to Drive. I have to rev it before it actually kicks in. I'm hoping the leak is just being caused by a gasket either in the pan or connecting the trans to the transfer case..
View 7 RepliesFord 7.3L Power Stroke (1999-2003) :: 4R100 No Drive - All Gears Lost
Driving along today my trans started doing some weird stuff. It lost all gears. Forward and reverse. If I turned the truck off and let it sit a while it would go again for awhile then loose drive again. When I got home I checked fluid level and did KOEO o/d off and back on. I drove it around the block and it seemed ok, so I went on my way. After about 20 min I noticed the OD light flashing. I checked codes and It had P1754-ccs.
View 14 RepliesFord 7.3L Power Stroke (1999-2003) :: 4r100 - Overdrive Light Start Blinking
Took a 2 hour trip got of the interstate came to a stop light and the OD light starting blinking cut the truck off at the light fired it back up shifted in every gear like normal drove a little ways stopped at a light and OD started blinking again cut truck off back on light. Went away shifted great threw all the gears.
View 6 RepliesFord 7.3L Power Stroke (1999-2003) :: 2001 F350 - 4r100 Transmission - No Reverse
my parents have a f350 which now has no reverse. it has a reman sticker on it, 230k on the truck but no idea on mileage on the tranny. shifts 1st through 4th fine, no slip. Tc lockup works just fine. No codes found with my solus scanner. When shifted in reverse it will move back about 2 ft if revved above 2k and then nothing. Am I looking a trans rebuild or is there something I can check and repair with in it the truck?
View 4 RepliesFord 7.3L Power Stroke (1999-2003) :: 4r100 Transmission - Code P0750 Shift A Malfunction
I bought it 4 years ago with 205K, swapped trans fluid.. 10k miles later (I don't drive it a lot ). I am throwing the code P0750 Shift A malfunction.. i figured id swap the solenoid pack since I am pretty handy and it was affordable.. but it didn't seem to do the trick.. it drove around the block good for 5 minutes before it started shifting weird and throwing a code again.. almost seems to be slipping... I still have to check fluid level again and scan the code again but any suggestions? I have an apt to go to the tranny shop this week and would like to avoid the big bucks if possible.
View 14 RepliesFord 7.3L Power Stroke (1999-2003) :: 4R100 - Overdrive Light Flashes And Shifting Really Hard
I have a 2001 3/4 pickup. Sometimes the over drive light flashes. When it flashes it shifts really hard and sometimes it won't shift into 4th until I mash the overdrive button. Sometimes the light doesn't flash at all and it doesn't have any trouble shifting at all. Is it a solenoid? Or wiring issues?
View 6 RepliesFord 7.3L Power Stroke (1999-2003) :: 4r100 Transmission - How To Bypass Neutral Safety Switch
I have the 4r100 transmission how do I bypass the safety switch? Also what are your thoughts on starting the engine with the transmission out? I know to bolt the spacer plate to the engine.
View 7 RepliesFord 7.3L Power Stroke (1999-2003) :: 4R100 Transmission Will Only Shift To 2nd Gear When Throttle Is Feathered At 2500 RPM
Problems with my 2001 F250 4r100 transmission. Transmission will only shift to 2nd gear when throttle is feathered at @2500 rpm. All other gears shift perfectly. This problem is consistent.
View 10 RepliesFord 7.3L Power Stroke (1999-2003) :: 4r100 Transmission Loose After Warm Up Especially At 4th Shift Overdrive And Passing Gear
I have a 4r100 on in a 99 7.3 4x4. The shifting problem I have appears to be intermittant. it seems loose after warm up especially at the 4th shift overdrive and passing gear. possibly due to low presures ? sometimes (lately more often than not) hunts back and forth between 4th and o.d when passing or hill climbing. Under normal driving it shifts somewhat firm with 4th being an exeption.I have changed my crank position sensor filters and fluids which had turned dark and improved slightly. When I pulled the pan and replaced the filter the pan was spotless. No residue or signs of plates or debris. There is about 100,000 miles on the tranny and 350,000 on the truck. Questions: Is there a tcm for this transmission and if so could it cause these problems? I'm considering a purchase of an unlocked 1705 superchip to change the shifting but unsure if this will work for my issues...
View 14 RepliesFord 7.3L Power Stroke (1999-2003) :: F250 4r100 - When Taking Off In 3rd Can Manual Select 2nd But Not 1st - Codes P0715 / P0717
5 months ago I brought a f250 7.3 2000 model the car i always wanted and to take a trip around australia but I am having problems with the 4r100 transmission that was rebuilt before i purchased the truck
The problem and checks. Truck taking of in 3rd can manual select 2nd but not 1st
Getting Codes P0715 , P0717 changed turbine speed sensor checked wiring to pcm all ok codes still coming up
Put truck on scanner and found TSS reading when manually in 2nd but not in park neutral or drive
Removed PTO cover to check gear turning that the TSS reads from with the truck up on stands the gear only turns in 2nd when in park neutral or drive it is stopped verifing what the scanner is seeing the scanner also see the gear changes but the transmission is not changing ...
Ford Super Duty (1999-2016) :: 2003 F250 4R100 Trans Blowing 10a Fuse When Pull Selector Into First Gear
Whenever I manually pull my gear selector into first gear it blows one of the 10a fuses (not sure which number). I lose all gauges and accelerator pedal. It's about the fourth fuse from the right on the bottom row.
View 4 RepliesFord 7.3L Power Stroke (1999-2003) :: Trans Will Engage When RPMs Get Over 2K
Have to get rpm's over 2k before trans will engage, then in between shifts I either have to let off throttle or let engine rev over 2k to get trans to shift...
View 3 RepliesFord 7.3L Power Stroke (1999-2003) :: Trans Grinding Intermittently?
I'm getting a sound every now and then of what sounds like i'm running over rumble strips on the side of the highway. I'm guessing it's the trans grinding. Any thoughts?
View 8 RepliesFord 7.3L Power Stroke (1999-2003) :: Trans Temp Really High?
I notice my trans temp gets really hot fast. For instance just moving my trailer from front of my house to side yard makes temp go to 250. Without any load and driving a couple miles it does the same thing. It's been doing it since I installed the trans temp gauge just trying to figure out what's up.
View 14 RepliesFord 7.3L Power Stroke (1999-2003) :: Trans Not Locking In 1st Correctly
I bought this truck with 200000 miles and its been flawless, its now 900 short of 600000.. I use it to haul everyday.. nothing heavy mostly a car or truck and every once in a while a skid steer. I got 560000 out of my trans, i take it easy. lol
at 350k I installed a Jw valve body drilled pump, tripple disc converter and solenoid pack.. at 560k it went, i pulled it and brought to a guy i trust as much as you guys trust BDS.. Ive had what Ive called a vibration since day one, could be a shudder, could be a shimmy.. what ever.. I brought it back and he says nothing would do that from a trans, so I went through drive shaft, new t case ripped apart rear end and its still there and I have just been dealing with it.. about 2 months ago it started acting up in first. when I pull down to drive I get the normal bump and start to go, it feel like the truck slows, then another bump and it climbs normally with the shudder.
took it back and he said maybe a stuck valve in small VB, so I pulled it and went down there and it was fine, I reinstalled and still does same thing. I then put a pressure gauge on it and it swings as it should sits around 70 psi and will climb, only in first it will climb and fall back to 70 like a switch was flipped, and the rest of the gears bleed off slowly or normally.. He then said it could be the big valve body, so I swapped that one out with another and no real change, maybe its a bit more noticeable.
I am at a loss. Could this be loose feed bolts? Could the shudder that I can feel at most speeds be the 1 gear slipping a tiny bit all the time? I am told that first gear is always on.. this truck has been a dream until this trans issue..