climate control blowing fuse

[sperold]

Try this for the no overdrive situation.

http://www.wikisho.com/wiki/I_have_an_ATX,_and_my_4th_gear_stopped_working!

I see that link does not work as well as it should, try this:
Kevin Airth had a problem with his 4th gear not working in his automatic transmission SHO, and found the following solution :

A big thanks to Doug Lewis and Micheal Anderson! My 93 ATX had lost 4th. gear but otherwise worked OK. Micheal posted the same problem and Doug was able to figure it out. The C-clip on the O/D servo had broken, preventing the transmission from shifting into 4th. gear. The O/D servo cover is on the drivers side of the transmission on the firewall side,down low by the steering rack. Remove the drivers side front tire and you can get to the 3-8 mm bolts on the cover. I removed the cover and the servo,found the broken clip laying inside the transmission. Replaced it for less than $1 and now have 4th gear back!

 

[SHOdded]

it worked when I went in through the index rather than going to the link directly. weird.

 

[mclark]

There was an issue that some had with the 4th gear actuator not engaging due to a pin coming out or something like that. There was a detailed thread on here about it, so try searching. Or the o/d off button could have a short so it toggles the o/d to off every time you start the car. Otherwise, its likely an internal (expensive) issue.

Over drive light comes and off when activated, and it engages every time it is activated, trans shifts up and down when the o/d button is activated . Just had trans rebuilt about four years ago but the sho set up for about a year or more of that time due to motor failure , before than it was my daily driver with no problems . After the engine was replaced about six or seven months ago its that's when the problem started .

 

[rubydist]

well if it shifts down when the button is activated, then you have 4th gear so I don't understand what the problem is.

 

[mclark]

Try this for the no overdrive situation.

http://www.wikisho.com/wiki/I_have_an_ATX,_and_my_4th_gear_stopped_working!

I see that link does not work as well as it should, try this:
Kevin Airth had a problem with his 4th gear not working in his automatic transmission SHO, and found the following solution :

A big thanks to Doug Lewis and Micheal Anderson! My 93 ATX had lost 4th. gear but otherwise worked OK. Micheal posted the same problem and Doug was able to figure it out. The C-clip on the O/D servo had broken, preventing the transmission from shifting into 4th. gear. The O/D servo cover is on the drivers side of the transmission on the firewall side,down low by the steering rack. Remove the drivers side front tire and you can get to the 3-8 mm bolts on the cover. I removed the cover and the servo,found the broken clip laying inside the transmission. Replaced it for less than $1 and now have 4th gear back!

Have a little time to work on the SHO now, what is the mechanical skills for repair.

 

[rubydist]

You said in post #23 that the o/d off light goes on and off when the button is pressed, and that the trans shifts up and down when the button is pressed, so what is the problem that you are trying to fix?

 

[mclark]

You said in post #23 that the o/d off light goes on and off when the button is pressed, and that the trans shifts up and down when the button is pressed, so what is the problem that you are trying to fix?

I do not have fourth gear

 

[zoomlater]

When you are cruising on the highway with a fully warmed up tranny, what RPM is shown on the Tach. Does it change when you press the OD button? When my car is in overdrive at 65mph, my Tach is below 2500RPM. I can check later what the exact RPM is but I thought it was closer to 2300 or so.

 

[rubydist]

I do not have fourth gear

If the trans shifts when you press the o/d off button, then you do have 4th gear.

 

[mclark]

When you are cruising on the highway with a fully warmed up tranny, what RPM is shown on the Tach. Does it change when you press the OD button? When my car is in overdrive at 65mph, my Tach is below 2500RPM. I can check later what the exact RPM is but I thought it was closer to 2300 or so.

FULLY WARMED TRANS AT 70 MPH RPM TACH IS AT 3000. THE TRANS SHIFTS UP WHEN O/D IS ACTIVATED AND DOWN WHEN O/D IS DEACTIVATED . EVERY THING WORKS FINE , BUT NO FOURTH GEAR , OR PASSING GEAR .

 

[mclark]

If the trans shifts when you press the o/d off button, then you do have 4th gear.

NO , AND THERE IS ALSO NO PASSING GEAR .

 

[rubydist]

OK, here is how this works: The o/d off button does exactly one thing - it locks out 4th gear. If you are driving on the highway and press the o/d off button and the transmission shifts, that means it shifted down from 4th to 3rd. That is the ONLY thing that button will cause to happen. It will NOT make the trans shift from 3rd to 2nd. Not ever.

It sounds to me like the issue you are having is that the torque converter will not lock up.

 

[mclark]

OK, here is how this works: The o/d off button does exactly one thing - it locks out 4th gear. If you are driving on the highway and press the o/d off button and the transmission shifts, that means it shifted down from 4th to 3rd. That is the ONLY thing that button will cause to happen. It will NOT make the trans shift from 3rd to 2nd. Not ever.

It sounds to me like the issue you are having is that the torque converter will not lock up.

That's correct, what I am saying is that the trans only changes three gears , that's why at 70mph tach is at 3000 rpm . If I activate the o/d button at 70 mph the tach climbs to 4000 rpm, and when I deactivate the o/d button the tach return to 3000rpm .At 70 mph with warm trans tach should be around 25oo rpm .

 

[zoomlater]

That's correct, what I am saying is that the trans only changes three gears , that's why at 70mph tach is at 3000 rpm . If I activate the o/d button at 70 mph the tach climbs to 4000 rpm, and when I deactivate the o/d button the tach return to 3000rpm .At 70 mph with warm trans tach should be around 25oo rpm .

My car on level flat ground
94 ATX
60mph 2000rpm
65mph 2300 rpm
70mph 2500rpm

There is supposed to be a way to pull your tranny codes, need to do a search

 

[rubydist]

A four speed transmission equals 3 gear changes.

The difference between approx 2500 where you should be at 70 and the approx 3000 that you are experiencing is that amount of torque converter slip when the torque converter does not lock up. That is your issue.

A non-locking torque converter could be caused by a bad connection or a bad torque converter. More likely the converter in my experience.

 

[zoomlater]

Here are a couple of threads, I've never had to pull tranny codes (my tranny just exploded before that happened), 35K on rebuild so far

https://shoforum.com/index.php?threads/atx-neutrals-out-at-stop.92036/#post-943857
https://shoforum.com/index.php?threads/95-atx-lost-od.102034/#post-1079344

 

[luigisho]

The difference between approx 2500 where you should be at 70 and the approx 3000 that you are experiencing is that amount of torque converter slip when the torque converter does not lock up. That is your issue.


A bad torque converter could also explain really hard gear shifts you mentioned earlier or internal problem but coincidences are rare

 

[rubydist]

You need to pull the codes to see what the computer is saying.

It could be a bad tcc solenoid, a bad trans temp sensor, a bad connection or broken wire, or a bad torque converter lockup clutch. The codes will direct you to the problem so we don't have to speculate.

 

[mclark]

My car on level flat ground
94 ATX
60mph 2000rpm
65mph 2300 rpm
70mph 2500rpm

There is supposed to be a way to pull your tranny codes, need to do a search

You r correct with the tach rpms , but at 70 mph i am at 3000 rpm

 

[pjtoledo]

friendly F Y I,, while at steady speed and applying accelerator to pass, the first thing the transmission does is release the torque converter lock up clutch. even though the engine RPMs jump up the transmission remains in the same gear. that is not a shift to "passing gear", but the de-coupling allows the engine to rev higher where it has more power. the RPM difference is inside the now slipping torque converter. if the computer senses a need for even more power a down shift to the most appropriate gear occurs.

during normal acceleration there will be 3 gear shifts, 1-2 2-3 3-4. then the computer engages the torque converter lockup clutch and the engine RPMs drop. that is not a 4th shifting of gears but is mistakenly perceived as one.

the 3000 RPMS at 70 mph indicate the transmission is in top gear, 4th, and the torque converter lock up clutch is not engaged which allows the engine to rev higher from 2500 locked to 3000 unlocked.

at this point you cannot "downshift to passing gear" because you're already in "passing gear" by virtue of the torque converter being unlocked.


make sense? or do I need to add some even deeper B.S.


Perry