700r4: No 2nd gear
#1
Heel & Toe
Thread Starter
700r4: No 2nd gear
Hi everyone!
So my car started to miss 2nd gear. Every other gear works, and 2nd sometimes works. Doesn't matter if I have the shifter in Drive or 2nd, it feels that its in neutral when it should shift, but if I reev it a little it engages.
It feels like if I have the throttle between 40% and 60% it engages. If I down shift its the same, for example if I'm in 4th (OD) and shift to 3rd (D) it shifts fine, then move to 2nd it doesn't appear to do anything, if i start reeving its like its in neutral (free reeving) if I reev it more, it engages the 2nd. 2nd to 1st works fine.
I've been reading the service manual, but automatic transmissions are way too complicated.
I love fixing my cars, but automatic transmissions are a nightmare. It doesn't seem to be 2-4 band because 4th works just fine (unless the clutch its engaging, but again, I dont even know how to detect if its the clutch or not, its some kind of sorcery to me).
Thanks!
So my car started to miss 2nd gear. Every other gear works, and 2nd sometimes works. Doesn't matter if I have the shifter in Drive or 2nd, it feels that its in neutral when it should shift, but if I reev it a little it engages.
It feels like if I have the throttle between 40% and 60% it engages. If I down shift its the same, for example if I'm in 4th (OD) and shift to 3rd (D) it shifts fine, then move to 2nd it doesn't appear to do anything, if i start reeving its like its in neutral (free reeving) if I reev it more, it engages the 2nd. 2nd to 1st works fine.
I've been reading the service manual, but automatic transmissions are way too complicated.
I love fixing my cars, but automatic transmissions are a nightmare. It doesn't seem to be 2-4 band because 4th works just fine (unless the clutch its engaging, but again, I dont even know how to detect if its the clutch or not, its some kind of sorcery to me).
Thanks!
#2
Intermediate
Rebuild time. I don't know your location but Frank Cahall (CPT) is a supporting vendor on here and ships all over the US.
https://cahallperformancetrans.com/7...ds-%26-pricing
https://cahallperformancetrans.com/7...ds-%26-pricing
#3
Heel & Toe
Thread Starter
Yeah well, I prefer to fix it without rebuilding. The fact that it sometimes shifts, and that it shifts into 4th gear perfectly gives me some hope of a not that bad problem.
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knikula (07-23-2019)
#5
Le Mans Master
I would pull pan and check for debris. A 1/4 teaspoon of fine particles or less normal a repair maybe possible. A lot or "wheaties" in pan just pull it, because overhaul is required.
#6
Heel & Toe
Thread Starter
Thanks for the help, so first I want to disable the tcc, to see if the 4th gear I feel is the band applying or just the clutch. I the 4th gear works, then the problem being only the 2nd gear shouldnt be that bad of a fix. The servo probably, or the acumulator.
So if the 4th gear works, I'll attach a pressure line to the second oil and check if it drops, i might even compare it to the 4th oil and the line pressure (but it seems easier when I write it than when I have to actually do it), or I can just check the servo.
So if the 4th gear works, I'll attach a pressure line to the second oil and check if it drops, i might even compare it to the 4th oil and the line pressure (but it seems easier when I write it than when I have to actually do it), or I can just check the servo.
#7
Melting Slicks
Thanks for the help, so first I want to disable the tcc, to see if the 4th gear I feel is the band applying or just the clutch. I the 4th gear works, then the problem being only the 2nd gear shouldnt be that bad of a fix. The servo probably, or the acumulator.
So if the 4th gear works, I'll attach a pressure line to the second oil and check if it drops, i might even compare it to the 4th oil and the line pressure (but it seems easier when I write it than when I have to actually do it), or I can just check the servo.
So if the 4th gear works, I'll attach a pressure line to the second oil and check if it drops, i might even compare it to the 4th oil and the line pressure (but it seems easier when I write it than when I have to actually do it), or I can just check the servo.
Please explain the process you will follow to do this. In your first post, you say autos are a mystery to you and some sort of "Sorcery" . Now you are talking testing and comparing pressures. Which one is it? Methinks you are reading internet articles and trying to display your newfound "knowledge" here.
#8
Heel & Toe
Thread Starter
Yes well, but checking pressures is easy, comparing pressures also (math).
The service manual shows the pressures, so that would be easy.
Disabling the clutch also, either pressing the brake a little or disconnecting the wiring of the solenoid altogether.
Checking the servo I can do it in car also, pretty simple.
But after that, if something else is wrong then I wouldn't take it apart myself, get me?
"Knowledge" yes, maybe I dont know stuff, but I learn. Nice fella you are, I thought forum where to share knowledge, but nice.
The service manual shows the pressures, so that would be easy.
Disabling the clutch also, either pressing the brake a little or disconnecting the wiring of the solenoid altogether.
Checking the servo I can do it in car also, pretty simple.
But after that, if something else is wrong then I wouldn't take it apart myself, get me?
"Knowledge" yes, maybe I dont know stuff, but I learn. Nice fella you are, I thought forum where to share knowledge, but nice.
#9
Melting Slicks
Yes well, but checking pressures is easy, comparing pressures also (math).
The service manual shows the pressures, so that would be easy.
Disabling the clutch also, either pressing the brake a little or disconnecting the wiring of the solenoid altogether.
Checking the servo I can do it in car also, pretty simple.
But after that, if something else is wrong then I wouldn't take it apart myself, get me?
"Knowledge" yes, maybe I dont know stuff, but I learn. Nice fella you are, I thought forum where to share knowledge, but nice.
The service manual shows the pressures, so that would be easy.
Disabling the clutch also, either pressing the brake a little or disconnecting the wiring of the solenoid altogether.
Checking the servo I can do it in car also, pretty simple.
But after that, if something else is wrong then I wouldn't take it apart myself, get me?
"Knowledge" yes, maybe I dont know stuff, but I learn. Nice fella you are, I thought forum where to share knowledge, but nice.
That's exactly what I tried to do in my first reply to you - try and help you out with your problem. But I guess you decided to ignore my attempt at helping you and decided instead to try and dazzle with BS. You still didn't elaborate on your procedure to test "4th oil and 2nd oil" .
#10
Heel & Toe
Thread Starter
But I said Im gonna test the servo, like you told me, isnt it there where the 2nd gear piston seal is? By testing I mean taking it out and looking at it.
The pressure thing is just beacause the manual says i have to remove the exhaust to remove the servo, and if thats the case and the pressure lines are easier to access, I might just hook the gauge and see if it measures a pressure close to the 235 psi (if i recall correctly) the manual says, while driving of course and in manual second gear.
The pressure thing is just beacause the manual says i have to remove the exhaust to remove the servo, and if thats the case and the pressure lines are easier to access, I might just hook the gauge and see if it measures a pressure close to the 235 psi (if i recall correctly) the manual says, while driving of course and in manual second gear.
Last edited by chkansas; 07-23-2019 at 09:08 PM.
#11
Heel & Toe
Thread Starter
I thought about messuring the pressure because if the seal leaks (and sometimes if i rev it enough it seems to engage 2nd) the pressure would drop in the 2nd oil right?
Makes sense to me. But if its easier to take the servo off then ill do that first, I dont have a lift and such, thats the problem.
Makes sense to me. But if its easier to take the servo off then ill do that first, I dont have a lift and such, thats the problem.
#12
Melting Slicks
But I said Im gonna test the servo, like you told me, isnt it there where the 2nd gear piston seal is? By testing I mean taking it out and looking at it.
The pressure thing is just beacause the manual says i have to remove the exhaust to remove the servo, and if thats the case and the pressure lines are easier to access, I might just hook the gauge and see if it measures a pressure close to the 235 psi (if i recall correctly) the manual says, while driving of course and in manual second gear.
The pressure thing is just beacause the manual says i have to remove the exhaust to remove the servo, and if thats the case and the pressure lines are easier to access, I might just hook the gauge and see if it measures a pressure close to the 235 psi (if i recall correctly) the manual says, while driving of course and in manual second gear.
Guess you got 'er under control then.
#14
Melting Slicks
Some of you snowflakes on this forum are lucky you weren't here a few years ago when CFI-EFI was around. He didn't put up with BS and your *** would be so sore from him chewin' on it, you wouldn't sit down for a week.
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Fiberbundle (07-24-2019)
#16
Melting Slicks
Give it up already! It was fun for awhile but this is a tech forum. How old are you anyways? 12? If you want to, start a thread in off topic titled "My hurt feelings" and I will engage with you there. As far as this forum, I am done with your nonsense.
#17
Race Director
Arbee, why does it seem like every time you try to help a member, thing get messy?
#18
Melting Slicks
I guess I'm(and always have been and no intentions of changing) a straight forward, tell it like it is guy. My ways have taken me to the top of my field. Duking it out in construction production meetings with clients like major oil companies makes you take on a certain personna. In those meetings it is attack or be attacked. I never subscribed to the "turn the other cheek" mantra. If I detect BS then I will call it out. Those that can't except that, then they have a choice. Don't read my posts or respond. Can't get much simpler than that can it. If there is only one player, no game. Everyone uses internet forums in different ways. Some think of it as their "family" and can't bear to be away too long. Myself, I treat it as a learning tool and possibly pass on my knowledge. I am not here to be friends. Have lots of those in real life, not faceless words on a computer screen from people I will never meet or have any desire to do so unless it involves some sort of transaction. I have a right to my opinion like anyone else. To reiterate, those that don't like it have a choice.
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Fiberbundle (07-24-2019)
#19
Race Director
I guess I'm(and always have been and no intentions of changing) a straight forward, tell it like it is guy. My ways have taken me to the top of my field. Duking it out in construction production meetings with clients like major oil companies makes you take on a certain personna. In those meetings it is attack or be attacked. I never subscribed to the "turn the other cheek" mantra. If I detect BS then I will call it out. Those that can't except that, then they have a choice. Don't read my posts or respond. Can't get much simpler than that can it. If there is only one player, no game. Everyone uses internet forums in different ways. Some think of it as their "family" and can't bear to be away too long. Myself, I treat it as a learning tool and possibly pass on my knowledge. I am not here to be friends. Have lots of those in real life, not faceless words on a computer screen from people I will never meet or have any desire to do so unless it involves some sort of transaction. I have a right to my opinion like anyone else. To reiterate, those that don't like it have a choice.
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vette196 (07-25-2019)