loss of power after jmod
- Thread starter 1sik32v
- Start date
Fudge I forgot about checking for those I also did not use the recommended plate gasket I used newer ones that the crown Vic guys use for there 98- but I didn't plug up any holes or anything though it shifts great just lose of power....
unity
Dedicated LVC Member
Maybe the TC solenoid not plugged in? Going form memory there. But I think that one is harnessed.
Check balls may do it since missing ones may cause a fluid leak in the TC? Just guessing.
Gasket probably not a huge deal. If I recall one only hole in the gasket is enlarged.
Check balls may do it since missing ones may cause a fluid leak in the TC? Just guessing.
Gasket probably not a huge deal. If I recall one only hole in the gasket is enlarged.
unity
Dedicated LVC Member
Vulcanized rubber. Think they are just standard Ford kind. A trans shop will know. I think there are 7? Again, I forget. Its CRITICAL they go back in the same place though. I think there is a map for them in the JMod article though.
At 30 it may be slipping or the TC lock may be hunting.
At 30 it may be slipping or the TC lock may be hunting.
chris2523
93 Mark VIII
Ok I get home from work decide to run it around the block and I put the car manually in second and floored it....and it works great it accelerates better and faster than manually in first or drive......and the downshift is instant from third to second unlike into first its a smooth downshift....
NoLimit95
Dedicated LVC Member
I tried to tell you this back in November that drilling holes in the plate for a 98 were not the same as drilling for your 97. Now, if you did happen to find the correct drilling specs for your 97, you still replaced the valve body gaskets with gaskets meant for a 98 trans. The plates for the 98 and 97 are not the same and holes are in different places. The 98 plate does not have holes that the 97 plate does have. With that said, this means you have gaskets that are also missing holes........ <-----get that?
Now, you have gaskets that are missing holes and clamped together inside a 97 valve body. This would tell me you have some limited fluid flow somewhere. Check the picture below. At the top of the plate, you have 5 holes to drill. On the 98, you would be drilling 4 at the top. 4,5,9,11 and on the 97 plate, you have a hole right beside hole #8 that you don't have on the 97 which means you have this hole stopped up with 98 gaskets.
97 plate below
I'm almost positive that your problem is having the wrong year gaskets on there. You can't be torquing to pieces of thick aluminum together with a thin plate in between that has holes in it that the gaskets don't have. Something somewhere is not getting the fluid it needs which means it's not getting the hydraulic pressure the solenoids are needing and in turn is not giving you the power that you think you have lost. You only have it blocked. The transmissions changed from 97 to 98. Stop and slow down and comprehend these changes. You're gonna mess around and burn up a solenoid that isn't getting fluid it needs or the O/D servo could go out, anything could happen. Also, 12 quarts is more than sufficient. It does not need 13 quarts of fluid. Get the right gaskets from Maxx. Let him know you have done the J-Mod and you will get the correct gaskets within 2 days for about $3 or less each + shipping. Check the balls too while you have it apart.
Now, you have gaskets that are missing holes and clamped together inside a 97 valve body. This would tell me you have some limited fluid flow somewhere. Check the picture below. At the top of the plate, you have 5 holes to drill. On the 98, you would be drilling 4 at the top. 4,5,9,11 and on the 97 plate, you have a hole right beside hole #8 that you don't have on the 97 which means you have this hole stopped up with 98 gaskets.
97 plate below
I'm almost positive that your problem is having the wrong year gaskets on there. You can't be torquing to pieces of thick aluminum together with a thin plate in between that has holes in it that the gaskets don't have. Something somewhere is not getting the fluid it needs which means it's not getting the hydraulic pressure the solenoids are needing and in turn is not giving you the power that you think you have lost. You only have it blocked. The transmissions changed from 97 to 98. Stop and slow down and comprehend these changes. You're gonna mess around and burn up a solenoid that isn't getting fluid it needs or the O/D servo could go out, anything could happen. Also, 12 quarts is more than sufficient. It does not need 13 quarts of fluid. Get the right gaskets from Maxx. Let him know you have done the J-Mod and you will get the correct gaskets within 2 days for about $3 or less each + shipping. Check the balls too while you have it apart.
I tried to tell you this back in November that drilling holes in the plate for a 98 were not the same as drilling for your 97. Now, if you did happen to find the correct drilling specs for your 97, you still replaced the valve body gaskets with gaskets meant for a 98 trans. The plates for the 98 and 97 are not the same and holes are in different places. The 98 plate does not have holes that the 97 plate does have. With that said, this means you have gaskets that are also missing holes........ <-----get that?
Now, you have gaskets that are missing holes and clamped together inside a 97 valve body. This would tell me you have some limited fluid flow somewhere. Check the picture below. At the top of the plate, you have 5 holes to drill. On the 98, you would be drilling 4 at the top. 4,5,9,11 and on the 97 plate, you have a hole right beside hole #8 that you don't have on the 97 which means you have this hole stopped up with 98 gaskets.
97 plate below
I'm almost positive that your problem is having the wrong year gaskets on there. You can't be torquing to pieces of thick aluminum together with a thin plate in between that has holes in it that the gaskets don't have. Something somewhere is not getting the fluid it needs which means it's not getting the hydraulic pressure the solenoids are needing and in turn is not giving you the power that you think you have lost. You only have it blocked. The transmissions changed from 97 to 98. Stop and slow down and comprehend these changes. You're gonna mess around and burn up a solenoid that isn't getting fluid it needs or the O/D servo could go out, anything could happen. Also, 12 quarts is more than sufficient. It does not need 13 quarts of fluid. Get the right gaskets from Maxx. Let him know you have done the J-Mod and you will get the correct gaskets within 2 days for about $3 or less each + shipping. Check the balls too while you have it apart.
Ok thanks man I knew I should've got the proper gaskets....oh and I have an auxiliary trans ccooler.....also for says that it takes 13 qaurts I have the deep sump pan
NoLimit95
Dedicated LVC Member
If the cooler is connected, then yes, 13 quarts sounds right. No cooler and a deep sump pan, 12 quarts. Get the right gaskets in there and then let us know what you have.
I would not be driving that car until they are swapped. The bands could fry, solenoids could burn up. Anything can happen.
chris2523
93 Mark VIII
yep...
Ok I get home from work and tear the valve body out and I start taking the pac man things off and I notice wait wtf where is the gasket I go check under the trans again and not there either.....so I'm baffeled at this wondering did I put it back on or not so ima put the correct gaskets on and put it back on tomorrow..... and the check balls r there
NoLimit95
Dedicated LVC Member
No gasket around the plates could pose a problem.
If you're missing that gasket, that's your problem and then you still probably have the wrong gasket inside the valve body.