Question about 1991 Geo Metro

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1992 Geo Metro w/ automatic. In drive, won't

1992 Geo Metro w/ automatic. In drive, won't shift out of 1st. I get occasionally get the trans to shift into 2nd if I work the shift lever back and forth.

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  • Master
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May be low on fluid as that wont shift the pistons in the valve body of the transmission
due to no fluid pressure!

Posted on Jul 20, 2009

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2 Answers

1992 geo metro automatic transimssion problem


Your probably looking at a transmission rebuild. But it is sporadic. Could be a valve body problem or solenoids. and electrical. Throw it on a scanner and find out.

Apr 15, 2014 | 1991 Geo Metro

Tip

General Motors gear ratios hide] 1 GM Rear Wheel Drive...


General Motors gear ratios
hide]

GM Rear Wheel Drive Transmissions

PTU = Power Transfer Unit (Crossover SUV AWD/4WD)

6 Speed Automatic Transmissions

RPO Trans Name 1st 2nd 3rd
MNK Allison 1000
MNZ Allison 1000
MW7 Allison 1000
MYB
MYC

5 Speed Automatic Transmissions

RPO Trans Name 1st 2nd 3rd
M74 Allison 1000
M22 5L50-E
M82 5L40-E
MTW Allison 2400
MX4 Allison 2000
MX5 5L40-E with PTU*
MV3 5L50-E with PTU*

4 Speed Automatic Transmissions

RPO Trans Name 1st 2nd 3rd
M30 4L60-E
M32 4L60-E HD
M32 4L65-E
M33 4L60-E Hybrid
M41 4L30-E
M70 4L70-E Super Duty
M99 2ML70 2-mode Hybrid*
MD8
ML4 4L30-E
MN8 4L80-E HD
MN8 4L85-E
MT1 4L80-E
MW9 HM 200-4R
  • EVT Mode 1 The 2ML70 can operate in electric mode or non-electric mode in first gear with a gear ratio of infinity to 1.70:1.
  • EVT Mode 2 The 2ML70 operates in non-electric mode with a gear ratio of 1.70 - 0.738:1

3 Speed Automatic Transmissions

RPO Trans Name 1st 2nd 3rd
M40
M41
M65
MD2
MD3 HM-180
HM-200C
HM-350
HM-400

GM Front Wheel Drive Transaxles

6 Speed Automatic Transaxles

RPO Trans Name 1st 2nd 3rd
MH2
MH4
MH6 6T75 (AWD)
MH7
MH8
MY9 6T75 (AWD)

5 Speed Automatic Transaxles

RPO Trans Name 1st 2nd 3rd
Aisin-AW 55-51LE
M09 Aisin-AW AF33-5
M43 Aisin-AW AF23-5
M45 Aisin-AW AF33-5
M98 AF33-5
MJ7 Honda 5AT
MJ8 Honda 5AT w/PTU*
MLS Aisin 50-40E
MU3 Saab 76.5mm

4 Speed Automatic Transaxles

RPO Trans Name 1st 2nd 3rd
MLQ Aisin 81-40LE
Aisin ZF 4HP 16
HM 325-4L
Jatco JF405-E
M10 Jatco JF403-E
M13 4T60-E HD
M13 4T60-E
M15 4T65E
M45 Aisin-AW AF33
M57 A245-E
M76 4T65E with PTU*
MD7 4T65E
ME7 4T45-E BAS Hybrid
ME8
ME9
MH1 4T80-E
MN3 4T65E
MN4 4T40/45-E
MN5 4T45-E
MN7 4T65E HD
MS7 A240-E
MU4 A246-E
MU5 U341-F

3 Speed Automatic Transaxles

RPO Trans Name 1st 2nd 3rd
M60 GEO Metro
MB3 A131L
MD9
MX1 A131L
GEO Storm
HM-425

GM Manual Transmissions

6 Speed Manual Transmissions

RPO Trans Name 1st 2nd 3rd
M10 Tremec 85mm
M12 Tremec T56
ML6 ZF S6-650
ML9 ZF S6-40
MM6 Tremec T56
MV1 Aisin 85mm
MV5 Aisin D173 AY6
MV6 Aisin 85mm
MZ6 Tremec 85mm

5 Speed Manual Transmissions

RPO Trans Name 1st 2nd 3rd
M35 Getrag 260
M35 Getrag 260 (2003-2004 Cadillac CTS)
M49 BW 5spd
M50
M59 GEO Tracker
M86 Getrag F23 75mm
M94 Getrag F23
M96 Tremec 109mm
MA5 Aisin AR5 82mm
MG3 Getrag F23
MG5
M50
M51
MH3 Tremec T-5
MK5 C59
ML2 Tremec T-5
ML3 Tremec T-5
MT8
MU3 Saab F25
MW2
MW3 NV4500 109mm
TR-3450
TR-4050
TR-4050
2007 Chevrolet Optra and Spark (Trans code Y4A)
2007 Chevrolet Optra and Spark (Trans code Y4M)

4 Speed Manual Transmissions

RPO Trans Name 1st 2nd 3rd
M20 HM-117
M73 Isuzu
MC0 Getrag
MC9
MY6 NP260

More GM Manual Transmissions

6 Speed Manual Transaxles

RPO Trans Name 1st 2nd 3rd
MT2 Opel F40 83mm
MU9 Opel F40 83mm
MTN Toyota C60

5 Speed Manual Transaxles

RPO Trans Name 1st 2nd 3rd
D-16 (2005-2008 Chevrolet Aveo 1.4 DOHC / 1.5L)
D-16 (2005-2008 Chevrolet Aveo 1.4 SOHC)
Y4A (2007 Pontiac Matiz)
YM4 (2005-2007 Chevrolet Aveo)
D-20 (2005-2007 Chevrolet Epica)
L73 Pontiac LeMans F16
M42 Geo Metro
M43 AF23
M49 BW 5spd
M58 Geo Metro
M79 LeMans F13
M86 Getrag F23 (5T45MI)
M94 Getrag F23
M98 Aisin 55-51E
MB4 Geo Prizm 1.8L
MB5 Geo Prizm
MFB 2008 Chevrolet Epica 5-Speed S/R (D24)
MFN 2008 Chevrolet Epica 5-Speed S/R (D33)
MG1 HM-282
MG2 HM-282
MG3 Getrag F23
MJ1 Isuzu
MK7 Isuzu
MLM Y4M (2008 Chevrolet Aveo 1.6 DOHC)
MR3 Isuzu
MU3 Saab F25
MV2 Chevrolet Sprint
MY7 Early J-car

GM Continuously Variable Transaxles

RPO Trans Name Lowest Highest
M83 V20-E
M75 V25-E
M16 V25-E AWD

on Apr 15, 2015 | GMC Cars & Trucks

1 Answer

92 geo metro with automatic transmission will not go out of 1st gear sometimes


my guess is its not electric shifted, (what trans model is it)
so step 2 in the FSM book says.... and i paraphrase
step1 is stall test (my guess passes in 1st and reverse)
step 2, line pressure test?
if that fails, tranny is bad.

Apr 15, 2014 | 1992 Geo Metro

1 Answer

Transmission module


automatic transmission, right?
dont shift , impliese but fails to say, by whom.???
on mine a 5speed manual stick, it can't shift by many a way.
ill take a wild guess and its an A/T
Don't shift.

ok, now I scratched head, do you mean
it stuck in 1st gear.
or did you mean its slipping , and feels like in neutral at all times.
or skips gears?

during these early transitional years, they had 2 transmissions
the newer one is electrically shifted.
and going farther we need to know what trans is really truely there.
we are blind here and cant see what you have.
if your car is a TCM shifted tranny (TCM is tranny brain,puter)
it has scan codes. so dump the tcm error codes.

http://geometroforum.com/topic/5011680/1/#new

or log into alldata.com and read the TCM page.
its not a secret , all metro FSM cover this.
fsm means , the Factory service manual. get one.
or log in.

Mar 24, 2014 | 1992 Geo Metro

2 Answers

My 93 Geo doesn't shift properly


my guess is a bad governor.
bad throttle valve, on rear of tranny, either the cable one, or vacuum one.
the tests are all in the FSM and online at alldata.com, for $15

Jul 15, 2013 | 1993 Geo Metro

1 Answer

My geo metro does not want to shift from second to third real well.


a/T trans,
does it fail to shift to 3rd with light throttle and flat ground moving say 45mph? Y/N.
trans diagnosis is complex , so is the trans.
it a hands on deal too, with tools.
1: is modulator valve working?
2: is Kickdown cable not stuck at WOT?
3: is filter screen clean?
4: is A/T pump pressure at spec.?
the car has an FSM and in this book , as a section called, on car repairs. for A/T . its 100% on topic.

Feb 27, 2013 | 1992 Geo Metro

1 Answer

1994 geo metro automatic transmission wont shift manuallywhen warm.


is it slipping,?
if the rpms rise and car dont speed up , in direct proportions that is slip.
is it?
if the engine has full power in 1st, the the transmission is bad.

not sure what shift manually means,
Drive to low? low to high. what? be exact in statements/
better stated what it does good and bad, and when. all modes.
are you saying the trans shirts perfectly in AUTOMATIC when cold./?

Feb 21, 2013 | 1994 Geo Metro

1 Answer

Auto trans will shift some times and manual only


It may be just the vehicle speed sensor. Does the speedometer work OK? The vehicle speed sensor tells the computer how to control the shifting and it also sends a signal to the speedometer. Is the trany full of fluid, is it fairly clean? It should be red. Most vehicles, you check the fluid with the engine idling, in park.

Dec 12, 2009 | 1992 Geo Metro

1 Answer

No reverse sometimes geo metro a/t


The accelator cable is "Y" shaped. one side goes to the carb and the other to the tranmission. If you have the carb.side too tight it will give you the problem that you are having.
Robert

Jun 28, 2008 | 1991 Geo Metro

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