C4 Automatic Transmission problems (Full Version)

Mustang Forum >> Ford Mustang Tech >> Classic Mustangs

C4 Automatic Transmission problems

  

chrisal -> C4 Automatic Transmission problems (11/26/2007 12:03:58 PM)

I cant get a C4 in a 66 stang to shift.
Here is the issue.  I pulled the motor and hooked up a new engine to the C4 transmission.  While the unit was out i cleaned it with some degreaser and a pressure washer.  I also removed the bellhousing to blast it.  That was all that was done to the c4 automatic.  I then mated it to the new engine and dropped them both back into the car.  
The other day i tried to roll the car and it wouldnt move.  I Put the car in neutral and then went through every gear, but it is like it is stuck in park.  I dropped the transmission pan to confirm that all of the linkage was in fact moving and not jammed.  It all appears to be fine and moving correctly.  The engine rotates freely by hand. I also removed the driveshaft and that did nothing to help resolve the problem.
So, my question is, what could be the problem?  Do i need to start the car first to get the fluid moving before putting it in gear.

Thanks

  
jlg2002 -> RE: C4 Automatic Transmission problems (11/26/2007 12:55:24 PM)

Is it possible the emergency brake is not off?

chrisal -> RE: C4 Automatic Transmission problems (11/26/2007 12:59:39 PM)

Unfortunately that is not the problem.  I took the driveshaft out just to make sure that something hadnt gone wrong with the brakes.

TexasAxMan -> RE: C4 Automatic Transmission problems (11/26/2007 1:04:48 PM)

Maybe check the vacuum modulator.

chrisal -> RE: C4 Automatic Transmission problems (11/26/2007 1:29:27 PM)

I havent started it yet-wouldnt i need to start it for the modulator to do its job.  Sorry, but this is my first time working on a car with an automatic. 
Should i try to start the car to see if it will fix things??

Boneyard -> RE: C4 Automatic Transmission problems (11/26/2007 1:33:22 PM)

I know mine will roll when taken out of park with the engine off. Although mine just quit on me today [:@]

TexasAxMan -> RE: C4 Automatic Transmission problems (11/26/2007 1:56:28 PM)

Are you saying you took out the driveshaft and you still can't roll the car?  If so, something is jammed up in either the rearend or front suspension.

Not trying to be insulting or anything, but you have removed any wheel chocks you used, right?

boogerschnot -> RE: C4 Automatic Transmission problems (11/26/2007 2:32:29 PM)

Check that your rear brakes arent locked up..

my77stang -> RE: C4 Automatic Transmission problems (11/26/2007 2:38:20 PM)

there is a catch type of thing inside the tranny that locks the car from moving when put in park, maybe that is stuck in an engaged position?

jlg2002 -> RE: C4 Automatic Transmission problems (11/26/2007 2:50:14 PM)

quote:

ORIGINAL: my77stang

there is a catch type of thing inside the tranny that locks the car from moving when put in park, maybe that is stuck in an engaged position?


Look at this shot of the inside of a C4; it shows a parking pawl that has to move ( the catch type of thing) in order to release the tranny out of gear.


[image]local://upfiles/40367/ADFAB4D8F29F4FD1BAC90973A28129A6.gif[/image]

chrisal -> RE: C4 Automatic Transmission problems (11/26/2007 2:53:28 PM)

Sorry for the confusion-it rolls with the driveshaft out. 
Can I get to the parking pawl without removing the transmission from the car??

Also, could the car not being started since the removal of the transmission have anything to do with the problem??

chrisal -> RE: C4 Automatic Transmission problems (11/26/2007 7:34:06 PM)

ttt

Gun Jam -> RE: C4 Automatic Transmission problems (11/26/2007 8:04:57 PM)

There could be a ignition kill switch that engages if the car is not in park when you attempt to start it.

Im not sure how your trans is setup but on mine there is a cable that operates the gear selector on the side of the transmission.  You must  run  it all the way to the park position  then back it  out 2 clicks then  make sure that the shifter in the car is all the way in park then back it out 2 clicks to  N so both the trans and the  shifter are in N. THen adjust the cable so it fits into the receiver /bracket  on the transmission with zero effort, it must line up exactly.

-Gun

Colorado_Mustang -> RE: C4 Automatic Transmission problems (11/26/2007 8:22:18 PM)

When you remated the tranny to the engine, how exactly did you connect the torque converter to the flexplate?  Did you seat the converter into the pump properly?  It sounds like you don't have any pressure.  How much pressure did this pressure washer have?  Did you get water in the tranny?

chrisal -> RE: C4 Automatic Transmission problems (11/27/2007 6:06:14 AM)

What i should have said above is that the car will not go into neutral even though the shifter linkage moves fine.  The torque converter moves fine.  I have not started the car yet so there is not any fluid transfer.  HOwever, i have been informed that this should have nothing to do with a car not going into neutral and that the neutral gear is completely manual. 
The shift lever did jam into the ground and put forward pressure on the shifter when i was lowering the engine and trans after pulling them.  I have also been informed that this will cause the parking brake pawl, as mentioned above, to jam and that the only way to get to it is to completely dissassemble the transmission.
What do you all think??

my77stang -> RE: C4 Automatic Transmission problems (11/27/2007 7:11:33 AM)

i think thats it.

not to hijack, but ever since mine was rebuilt and reinstalled when i go into park the car will roll and i hear a click click click before it grabs. i dunno if i have my shifter linkage out of adjustment or if the pawl inside is sticking.

any thoughts?

TexasAxMan -> RE: C4 Automatic Transmission problems (11/27/2007 7:28:29 AM)

quote:

ORIGINAL: my77stang

i think thats it.

not to hijack, but ever since mine was rebuilt and reinstalled when i go into park the car will roll and i hear a click click click before it grabs. i dunno if i have my shifter linkage out of adjustment or if the pawl inside is sticking.

any thoughts?



I think you'll be fine, parking pawl probably a little worn.  As long as it will hold your car on a small incline (without the brake) like a steep driveway or something, it's doing it's job, just probably searching for the best "grab".  But use the parking brake anyway.

my77stang -> RE: C4 Automatic Transmission problems (11/27/2007 7:40:53 AM)

whats a parking brake?

seriously though it didnt used to do this, so its the rod inside or its not adjusted in the linkage..... and im NOT pulling that goddamn thing out

TheRed67Dream -> RE: C4 Automatic Transmission problems (11/27/2007 8:05:42 PM)

I would try starting the car to get some fluid circulating, but it sounds like the pawl is more than likely the issue. My C-4 leaks horribly, but when it has fluid in it, everything works just fine. I've noticed when it's in park and it leaks dry, I have to start my engine and let it idle for a few minutes for the fluid to go through the tranny, then I slide the stick back to R, let it engage, back to N, let it disengage, back to D, let it engage, then back to P, let everything disengage, then it runs fine. I would check the linkage as well to make sure everything is good. I don't know how deep in you have to go to get to the pawl since I haven't gone past the tranny pan and driveshaft seal. I am aware of what it does though. Hope this helps.

cambo -> RE: C4 Automatic Transmission problems (5/7/2008 8:28:42 PM)

I think the pawl Sounds like the problem as well. I have the clicking problem is mine so it is warn in the other direction and won't hold hardly anything. My newest problem is a vacuum type line has come off my transmission 66- c4 and now it won't shift out of 1st. I have looked for where it goes and can't see the connection it is a tube with a rubber hose on the end of it. But i don't see any hose barb for it to go onto? Anyone know where to look?

  

Page: [1]

Return to Mustang Forums home page or view the Full Version of this page.