Ford F-150 - 1997-2003 :: 1998 - 4r70w Trans Keeps Breaking Flex Plates
Dec 1, 2013
I have a 98 f150 with 4.6l an 4r70w trans. I am on my second flex plate when I pulled the trans this time the tc was stuck to flex plate an the center of flex plate was busted around the bolts it has the remo engine in it but the studs on the tc were stuck in the flexplate I got them apart but it looked as if holes were off center on studs orded new tc an flex plate again. There is 1 bolt missing in top of housing an one was to long an didn't tighten up could that cause it to do it...
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The truck:
2000 4X2 F150
4.2l V6
280k miles/ some towing
The problem : The trans has a hard time getting into 1st gear. When you put it into gear you have to rev it to about 3k (when it's warm, 4k when cold) RPMs at which time you feel a definite engagement and it goes through the rest of the gears just fine. Once it's warm it will do stop and go traffic as long as you start it with the OD off.
The background : Orobably the stock motorcraft filter on there, and I don't think the oil has been changed in the life of the trans, but I do know that it's never been ran low on fluid. I took a gander at it and found a plug where a gear type speedo went on older models to be loose and leaking. tightened it up about two full turns. also noticed what looks to be a leak where the main case meets the output shaft housing. now I know neither of these are the cause of my headache but I do wonder if the second leak might be a sign.
The research : I've been looking for almost a week now for a solution. I've been all over TCCoA, Explorer Forum,10 pages of search here on FTE and various other Ford based websites and have come across a single thread with the same symptoms but the OP never came back with a solution.
The plan : A fluid/filter change (and flush) is definitely in the plans as well as inline filter for my own satisfaction. from what I've read the stock 1-2 accumulator is known to go bad on some of these and if I have the pan off might as well check anyways.
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My 4r70w is having some issues. It drives/shifts fine in reverse, 1st and 2nd but wont shift past 2nd gear. Doesn't even act like it tries. No CEL. I dropped the pan yesterday and there wasn't any metal chunks or any other debris in the pan and only the normal fuzzes on the magnet and there wasn't even an abundant amount on the magnet. This is a junkyard trans that was put in before I purchased the truck (2001 F150 supercrew 2wd).
I've ohm'd the shift solenoids and they seem to be within spec (below 30 ohms) so i want to rule them out, but still thinking of replacing all 3 solenoids just to be safe. Also, the filter just fell out with the pan so I'm assuming that might be part of the problem. My next thing to check is the 2-3 accumulator and spring to see if its stuck or broken.
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I have a 1997 Ford F-150 XLT 4x4 with the 4.6W and a 4R70W trans. For the past year is has been leaking trans fluid and has slowly got worse and worse. At first the truck would only leak at high speeds (when driving on the interstate for extended periods of time) and now It has gotten to the point where I am adding close to a quart of fluid a week. ( roughly about a quart every 300 miles!). I thought that it was the pan gasket leaking at first, so I flushed the trans fluid (dropped the pan and drained the TC and put on a new filter) put a new gasket on and torqued it all down and added some new Valvoline max life fluid. The first trip in the truck I noticed a puddle of fluid under the truck again.
The pan looked like it could have been a little warped, so I ordered a new pan and a new FoMoCo gasket (the one the came with the new filter was the cheap felt type). I thought I for sure had fixed the truck this time, but I drove it and once again it was still leaking. I checked all that I could before replacing the pan and gasket. I checked the trans cooler lines and fittings (no leaks) I pulled the inspection plug and it was dry (so I ruled out the front pump or TC leaking). The whole underside of the truck is covered with fluid so it is hard to pin point the leak, but most of the fluid drips down on the transmission cross member.
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2000 f150 182000 makes a rumbling noise from rear end mainly when turning at slow speeds. Thought it might of been axle bearings so replaced them this weekend to no avail. I have the 9.75 limited slip rear end but what I found out this weekend is that the axle bearings are for 8.8 , the 9.75 bearings was to big.
So does this mean I have 9.75 ring gear with 8.8 axles ? I have been using royal purple 75-140 with no friction modifier because royal purple says its it there.
But after doing some research Im going to go get some friction modifier and see if it works . So my question is how much of a pain is it to replace the clutch packs? What if I wanted to just put a different differential in and do away with limited slip ? Or go with a different aftermarket limited slip diff. ? what are my options , etc.
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Anyway, I'm gimped in my left shoulder for a while and I'm trying to do what i can with my 03 F150 Supercrew /4bt Cummins conversion. I am using a Dodge 47rh tranny and need to know the wiring for the 4R70W so I can hook up my 12 + ignition wire, back-up lights and neutral safety switch. I'd like to build my wiring harness.
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The problem started with a front seal leak a few months ago which I had no choice but to continue driving with because of low funds. I don't drive much so a couple of quarts of ATF was usually enough to get me out and about for what little driving I had to do. I know.. a front seal is cheap, but I'm partially disabled and unable to work on anything that is not under the hood.
I finally scraped up enough money to hire a friend to replace the seal, but he had a life crisis before completing the work, so I had to get another friend to reinstall the trany... still had the leak, but I could get around by adding ATF as before.
So we tried again... dropped everything and put another new seal on. This stopped the leak, but we got some grinding/squealing noises and could not get the trany to engage any gear.
From reading forum posts and other sources, we decided to replace the TC which we just completed this evening. We got some more of the grinding / squealing noise like before, except that it only occurred the first time we tried cranking the engine, the 2nd time we got no noises, but again no gears engaging.
What to check/replace next assuming there is something we can look at other than a total trany rebuild or replacement. I personally find it hard to believe we could have gone from a tolerably functional trany to scrap metal just replacing a seal and the TC. Its gotta be something simple we overlooked !!
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99 F150, 4x4, 5.4L, 4R70W trans.
I am experiencing a shudder at speeds between 45 and 50 when trying to accelerate mildly - it usually occurs after slowing down from a higher speed.
It is similar to the bucking that occurs when you do not downshift a manual trans.
I am guessing that it is the torque convert clutch staying locked or the tranny staying in OD too long. The shudder will go away if I give the truck enough throttle to downshift or simply push the overdrive off button - which forces it to downshift to drive.
What is the probable cause?
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here is the full story. just gotten truck out of the shop for a lower end rebuild and diff rebuild, truck set for about 5 to 6 months with no battery or motor. Engine runs great! besides a P1000 code.
I can drive down the road and can't go no faster then about 40mph without going to or over 3grand on the tac. I took it to auto parts store and gotten codes for both shift sol. and found out that the internal wiring harness was bad, and replaced it today. and cleared the codes. left parts store truck went shifted to 2nd and started to seem like it was going to go into 3rd then the rpm's went up like I was getting on the pedal when I wasn't and now it is going the same thing again. but took it back to parts store and checked for any codes and just got P1000 code and code about my speed sensors but they have been bad for a while.
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Code P7081
Do I have to drop the valve body to get to the shift solenoid? Is there only one solenoid? Anything special or tricky I should know about?
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4R70W. This one is in my 99 F-150 with the 4.6. From what the previous owner told me this trans only has 13k miles on the rebuild and I believe him because the converter is bright blue and when it does shift right, the shifts are solid and fluid is very clean. Truck only has 98k miles on the body as well, so it's possible the truck did sit a while because my tires have a ton of tread on them, but they are dry rotted a bit (dated 2006 IIRC).
Issue: When the trans is cold (sat overnight) it will shift to neutral between the 2-3 shift for 1-3 seconds depending on outside temperature and then drop into gear. But it only does this for the first 30 seconds or so of driving, after that it shifts normal (although it does seem to hold gears a little longer than I would think it should on occasion and not upshift). I have only gotten it to do it once per cold start so it seems like once the trans gets any heat it's fine.
I was also thinking I was getting drain back and maybe it wasn't heat related so I dropped the pan, replaced the filter, fluid and pan seal (it had a small leak) and torqued the valve body. Two of the bolts were a little loose, but the rest were fine. Tightened them to spec and put it back together with no dice. Truck also gets pretty bad fuel mileage so I'm starting to think maybe there is some temp sensor screwing everything up?
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I have a 1997 Mercury Mountaineer with a 4R70W trans behind a 5.0 liter. Vehicle sat for about 5 months. Went out to put it back on the road, and now the trans seems to be stuck in a forward gear no matter what the selector is in, park, reverse, neutral. Dropped the pan and replaced the filter and replaced what fluid was drained. no difference,.
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is it possible to put a 351 or a 302 in a 97 f150 with the 5.4 e40d trans is so what all would have to be done in order for everything to work rite??
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Ok so when I come to a full stop my truck doesn't want to shift right when I take off where do I need to start looking
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I have a 1998 f 150 v8 4.6 ltr xlt. A mechanic told me that if my tranny gets hot the OVERDRIVE LIGHT will start to blink. It sounds strange to me, should I have a guage installed? I will be towing a trailer this summer.
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I have a 1997 F150 4 x 4 with the 5.4 overdrive transmission. When I accelerate from a stop I can feel the slip of the transmission until I reach exactly 35 miles an hour. Above 35 seems to be normal and have plenty of torque.
The funny thing about this is I have had a 2001 Windstar same 35 miles an hour. I have also owned a 1997 Ford Explorer with this exact same issue. Three different motor and trans combination that will not lock up until you reach 35 miles an hour.
The truck has 213,000 I have replaced all coils fuel filters catalytic converter and torque converter. Have exterior tranny cooler. engine runs good and strong. And no code I have a reader.
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I have 97 f150 x-cab 4.6 auto 4x4. I'm gettin ready to pull motor & trans to rebuild both. I was wondering if I can pull both while still bolted together without having to remove the cab??? And what else will needed to be removed.
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I have a 2001 f150 5.4 4x4 with the 4R70W trans. its leaking fluid from somewhere. its not the pan gasket or the seal. it seems to be coming from the top somewhere. the dipstick tube has new o-rings. and the cooler lines have been replaced and are not leaking either. Where else it could be coming from. the passenger side of the bell housing is wet with fluid.
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I just changed my 4.6L. Now my tranny is starting to serge and buck it won't go in rev. But when I put it in D it started to clunk and buck. RPM would go up speed went down.
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I've got a 1997 f150, 4.6. It sat for year and a half, trans went out and it wasn't my primary vehicle so wasn't to worried about fixing it. Until now, well got a new trans put in it, fired it up. And had a misfire, #3 and #8. Changed plugs and wires, same thing. Getting spark at the plug. So I changed both injectors, still nothing! I'm kind of stumped now.
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I have a 2003 screw 4x2 with the 4.6, 148,000 miles, and I'm not sure what kind of transmission. Recently when the truck would shift into second it would hesitate and I would feel a slight grind, but it only did it when it would shift at 2000 rpm, if it shifted at 2500 rpm it would shift fine. I checked the fluid level, it was full, it smelled okay, looked *fine.
After pulling a boat (19 foot bass boat...nothing too heavy) it started to shake violently when I'd take off from a red light. So I dropped the pan and changed the filter, The fluid was dark red and smelled a little burnt. I put 4qts of fluid in it along with some Lucas transmission fix. The shake during take off is gone, and the grinding while shifting into second got a lot better but didn't go away completely.
However, now the grinding into second has has gotten worse again, and if I make a right turn from a red light it grinds and feels like its slipping until it shifts. I am not sure why making a right turn would affect it but its definitely worse when i turn right, left turns are fine. I'm guessing my transmission is going out and I just need to get it rebuilt...
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