mopops
Well-Known Member
does 82 mirada 318 have a lockup TQ - and if so what controls it. engine computer is gone tks gjg
lock up TQ
- Thread starter mopops
- Start date
80mirada
Well-Known Member
It should be lockup. It is controlled by the valve body, similar to the way it shifts
Mikes5thAve
Well-Known Member
If it's still original yes. There might have been a way to order without but it would be extremely rare.
It's the transmission itself that controls lockup, nothing to do with the computer.
It's the transmission itself that controls lockup, nothing to do with the computer.
mopops
Well-Known Member
OK tks cant feel it lock up
Sometimes the lockup can't be felt or otherwise perceived – but usually can be heard (from RPM's dropping). If you can feel it, it feels like 4th gear engaging.
By '82, most of all the dealership inventory came with lockups. A person could special order one without lockup – but that seldom happened.
The only good way to tell if your transmission has lockup (or not) is to get the transmission ID number (TIN) off of the pan rail and post here.
Note: you typically will need some cleaners and a paper towel (or two). Sometimes a wire brush is needed, as well.
The number in Red is the Transmission part number. The numbers in yellow is the build date and time.
A camera helps as well as light (to cast a shadow on numbers).
Note; if you get under the car, please use jack stands! We need to keep all of the members we can, in good health. That, and having a floor jack failure can result in you having a bad to very bad day.
BudW
By '82, most of all the dealership inventory came with lockups. A person could special order one without lockup – but that seldom happened.
The only good way to tell if your transmission has lockup (or not) is to get the transmission ID number (TIN) off of the pan rail and post here.
Note: you typically will need some cleaners and a paper towel (or two). Sometimes a wire brush is needed, as well.
The number in Red is the Transmission part number. The numbers in yellow is the build date and time.
A camera helps as well as light (to cast a shadow on numbers).
Note; if you get under the car, please use jack stands! We need to keep all of the members we can, in good health. That, and having a floor jack failure can result in you having a bad to very bad day.
BudW
Mr C
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The lock up kicks in at @ 50 mph on my 318 2 bbl M Bodies...a little sooner on the Super six F Body.
As mentioned the rpms will drop...
As mentioned the rpms will drop...
I forgot to mention, anything mechanical can fail or break.
It is possible you do have lockup - but might not working (or working correctly).
BudW
It is possible you do have lockup - but might not working (or working correctly).
BudW
My 1978 Chrysler LeBaron wagon has a lock up transmission that did not work for the first three years that I drove the car. While driving it one afternoon a horrible clunk and violent shuddering made me aware of its presence. I still haven’t done the necessary repairs to get it right. I do mostly town driving and when I need to go over 35 I manually shift from second into drive because otherwise it drops into lock up far too soon.
mopops
Well-Known Member
K420?675x 7482 (? ) maybe 9 just can't make it out-has been rebuilt or replaced before i got it hope this helps tks geo
I believe the number is K4202675, and if so would be:
1981-82 rear wheel drive passenger car A999 w/lockup.
This one has the good first gear gearset in it.
The other numbers will tell you what day it was made on and the unit produced that day (so not that important).
BudW
1981-82 rear wheel drive passenger car A999 w/lockup.
This one has the good first gear gearset in it.
The other numbers will tell you what day it was made on and the unit produced that day (so not that important).
BudW
mopops
Well-Known Member
so tell me about the good first gear gearset?
In 1980, Chrysler started to phase in a different planetary gear set on the A904/A998/A999 (part of the A904 class) transmissions. 1982 (I think) all of the A998/A999's had the better first gear ratio,
The early (1960 to '81) A904 class gear ratios are:
First – 2.45:1
Second – 1:45:1
Reverse – 2.22:1
The 1980 and newer version of the A904 class ratios are:
First – 2.74:1
Second – 1.54:1
Reverse – 2.22:1 (the same).
Third gear (for both) is 1:1.
That small difference in ratio makes a hug difference on these cars at takeoff's.
BudW
The early (1960 to '81) A904 class gear ratios are:
First – 2.45:1
Second – 1:45:1
Reverse – 2.22:1
The 1980 and newer version of the A904 class ratios are:
First – 2.74:1
Second – 1.54:1
Reverse – 2.22:1 (the same).
Third gear (for both) is 1:1.
That small difference in ratio makes a hug difference on these cars at takeoff's.
BudW
mopops
Well-Known Member
whit 224 rear gears it needs all it can get, thats why i use a ford 8.8 tks Bud your always a help
