Transmission Troubles

[El Gordo]

For those of you that don't know (probably all of you), I bought my '87 Grand Wagoneer in December of 2000, with a siezed engine. I've been spending the past six months replacing the long block in it. I can't even list all of the problems we ran into while doing the swap (which is why it took six months). Today we finally finished, and the engine starts and runs (has a rough idle, but I'm not worried about that). The only problem now is that the truck won't go anywhere, no matter what gear it's in. When I change gears, I can feel the transmission engaging, but when I hit the gas, it just revs. I've got plenty of tranny fluid in it, so that's not the problem. There is one vacuum hose that comes from the transmission, into the engine compartment that I can't find anything to connect to. Could this be the problem? I have good reason to believe that my Jeep was built for California, if that makes a difference. I can also post a picture of the hose in question if neccessary. Does anyone have any ideas of what's wrong with my tranny? I really don't want to have to rebuild it. TIA

I forgot to mention that now when I put it in Park, it still rolls. I don't think it did this before, but it's always been on flat ground, so I'm not sure.

[ May 20, 2002: Message edited by: El Gordo ]</p>

[moneypit]

A year ago, my cherro went " BANG" leaving a stop sign. Every one said it was the x-case chain. I checked it and it was fine, pulled the Rr end cover and low and behold the pinion lost a large chunk and that trashed the ring gear. So I fixed that and it free revved just like you say yours does. Turned out, when the ring and pinion broke, it loked up for a split second and snapped the output shaft of the tranny. I hope that didnt happen to yours. But drop the x-fer case and tip it forword, if the end of the tranny output shaft falls out dont be suprised. I had a local tranny shop put a new one in for $156.00 out the door. But others quoted $150-$225. The shaft was only $60.00 of it.
Good luck
JB

[Bob Barry]

One other possibility; if the tangs on the torque-converter haven't fully engaged the front input shaft, and you have to use the bellhousing bolts to draw the engine and tranny together (by force), then the TF727 has a tendency to blow out the front pump, resulting in a no-go condition after engine installation.

[64Trvlr]

I know this is a dumb question but, did you bolt the converter to the flex plate when you put the engine back in?
:cool:

[El Gordo]

64, We did, and it took forever, because the TC slid out of position when we put the engine in (the first time), so we had to pull the engine out enough to adjust the TC. I recall that being one of the problems that made this project take so long :rolleyes:

Everyone else, I'll look into what you've suggested. I wouldn't mind just having to pay $175.00 to get this on the road soon, but we did have to use the bellhousing bolts to bring the tranny and engine together. Does anyone know where the vacuum hose that I mentioned might go?

Thanks a lot!

[coolram]

The hose your'e speaking of is the vent line or the trans I believe.It comes out near the top of the t/c housing(I'm not positive on this,someone please correct me).

[El Gordo]

The hose is a metal line that turns into a rubber hose right above the bellhousing, and I can't figure out what the rubber hose is supposed to connect to. Anyone know? I can take a picture if it will help.

[64Trvlr]

Which transmission do you have? If it's a 400 then it should be the vacuum line from the modulator to the intake manifold.
:cool:

[gsmikie]

you should have a 727 tq flite trans if the converter slipped out when you were putting the eng in and you did not seat it in the pump then the front pump is not pumping fliud the converter drops into the trans on 2 shafts and the front pump gear if you did not get it all the way in to the pump gear then it wont do anything the easy to pind out is to undo one of the tranny cooler lines start the eng and see if the trans is pumping fluid just undo the line at the rad and stick it in a bucket start the truck and see if it is pumping fluid if not then pull the eng or trans and engage the conv with the pump

[El Gordo]

I have a 727 transmission. I know we got the TC seated properly the second time. When we got the engine started and added tranny fluid, one of the transmission hoses started spraying tranny fluid everywhere. I think that's a good indicator. We got that fixed, and put another quart of tranny fluid in. We are now thinkning that my transfer case is just stuck in neutral. The Jeep's in my friend's garage, so I can't go look at it now, but I'm going over there tomorrow to see if we can fix it. I'd still like to know where that hose is supposed to go. If it does go from the vacuum modulator to the intake manifold, where is it supposed to connect on the manifold? I haven't found any free places on the manifold for a vacuum hose to attach. Does it tee into another hose perhaps?

Thanks!

[gsmikie]

the 727 has no vacum hoses only a vent it might go to the transfercase

[El Gordo]

Problem fixed. I got to drive my Jeep of 1.5 years for the first time today! :D The transfer case just wasn't hooked up :rolleyes: . At least it wasn't difficult or expensive to fix (for the first time on this project). I still don't know what that hose is for, but the tranny shifts fine, so it's not coming from the vacuum modulator, apparently.
Thanks, everyone!!!

[El Gordo]

Alright everyone, here (http://www.homestead.com/paisteplayer/files/jeephose.jpg) is a picture of the hose in question. It is definitely coming from the transmission. Does anyone know where the end that I'm holding up is supposed to connect?

[Oracle]

How long is that hose? This is a long shot, but a jeep mechanic mentioned that the 727 has a vent that connects to the vapor canister. Apparently in the name of smog control the petroleum vapors are supposed to come out the vent and be routed to where they'll be picked up and burned.

I can't vouch for it cause never looked, but that's what he said. smile.gif

On another note, don't you LOVE that sunroof? heheh got mine working on my 88 and love the hell out of it. Can't believe you can have that big of hole open up there at 70mph and still have a conversation at normal volume levels smile.gif

[El Gordo]

The hose isn't very long. Maybe 1'6" at most. There is another hose next to this one that connects to the vapor canister, so I don't think this one does.
You're right about the sunroof. It is awesome. I think I remember it being listed as the 3rd largest factory sunroof ever. I wouldn't doubt it.

[SandHog]

El Gordo,

I think the hose you are looking at may be the vent hose for the transfer case, check that out, it connects to an elbow that comes off the top at the rear of the case, the other hose that goes to the charcoal cannister is the fuel tank vent.