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Have a 1993il series wont do anythingin any gear.one mechanic said there's a short in the transmission module

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I have a 1994 chevy Van G20 series it will go in reverse and in low gears but wont shift


Check your E-break first, secondly check to make sure you have no errors kicking from the control unit (engine computer module) which may or may not trigger a check engine light. Moreover it could be several things. Since it's an automatic the drive train maybe damaged, controller unite could be damaged, the transmission could (and probably) is dying. I'd have a professional mechanic check it out.

Jul 31, 2014 | 1994 Chevrolet G20

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My car does not shift in second gear.


Hi.

The first thing to do is replacing the transmission fluid. Metal debris inside the transmission box gets mixed with fluid and can cause similar problems.

The automatic transmission uses throttle position sensor to determine position and opening of throttle.
IF throttle position sensor is defective, the car may have problems shifting into one or more gears.

The automatic transmission is controlled by an electronic control module, that is energizing a set of solenoids to shift into gears.
The control module is a rectangular box, often located behind the dash and wired to transmission. The solenoids are attached to valve body,inside transmission.

If a solenoid is defective, or if control module is defective, the car may have problems shifting into one or more gears.

Problems concerning transmission control module, TPS and transmission solenoid are usually detectable reading fault codes stored on the car main control module (ECU/ECM).

Transmission problems are often returning a code p0700 after an OBDII scan.

Stored codes can be retrieved using an OBD scan reader.
If the car auto transmission is not shifting into gear, talk to the mechanic about the problem.
Only when the car has a really high mileage, or when there is a factory problem there is need to replace the gearbox.
A damaged gear box at low mileage is rather unusual.

on Oct 23, 2009 | 1988 Jeep Cherokee

1 Answer

Code Po734 means on my BMW 2002 (3 series)?? I


PO734 is Gear 4 Ratio Incorrect, slip detected.

Possible causes:
  • Transmission Oil Level Low
  • Output speed sensor problem
  • Engine speed signal circuit between ECM and TCM: Open/Short circuit.
  • Transmission Mechanical Failure.

Sep 24, 2013 | Cars & Trucks

2 Answers

2003 F-350 7.3 diesel Fx4 Automatic Transmission. After installing a quality rebuilt transmission, I went for a test drive. During the test drive, the transmission shifted smoothly through the first two...


That quality transmission may have a shorted shift solenoid or the wiring harness to the transmission is shorted or the control module is defective.I would strongly suspect the wiring is the problem, check every inch of it for damage like touching the exhaust and so on.

Mar 24, 2017 | Ford F-350 Cars & Trucks

1 Answer

Pulled this code off my 05 lancer po736 what does it mean


Here is the definition for the code.

P0736 MITSUBISHI Description This diagnosis monitors actual gear position by checking the torque converter slip ratio calculated by Transmission Control Module (TCM) as follows:

Torque converter slip ratio = A x C/B

A: Output shaft revolution signal from revolution sensor
B: Engine speed signal from Engine Control Module (ECM)
C: Gear ratio determined as gear position which TCM supposes
Possible causes - Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit
Read more: http://engine-codes.com/p0736_mitsubishi.html#ixzz27FemXvl5

Sep 22, 2012 | Cars & Trucks

2 Answers

P0766


Possible causes- Low transmission fluid level
- Dirty transmission fluid
- Faulty shift solenoid D valve
- Shift solenoid D valve harness or connectors
- Shift solenoid D valve circuit is open or shorted
Tech notesWhen the a transmission solenoid is stuck off, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is very dirty, it is recommend changing the transmission fluid and if possible removing the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a transmission mechanical failure and that the transmission will need to be rebuilt or replaced. When is the code detected?The P0766 code is detected when the ECM has detected a mechanical fault with the solenoid energized, valve stuck off P0766 Description Shift solenoid valve D is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module (ECM) (throttle opening). Gears will then be shifted to the optimum position.

Dec 04, 2011 | Cars & Trucks

1 Answer

I have no gears forward or reverse. My Vehicle is a 2003 Dodge Ram 1500 4x4 Hemi with 170,000 on the clock. Fluid is clean and full with no leaks. I have the following trouble codes:...


Your scanner will give you the code but it will not tell you how to fix your vehicle. Scanners basically tell you what systems to check or what systems are failing.

These are what your codes mean:

P0700: Transmission Control Module
- Shorted or open circuit within transmission control module (TCM)
- Failure of transaxle control module. This is just a informative code.

P0734: Gear ratio error in 4th gear
- Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit

P0732: Gear ratio error in 2nd gear
- Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit

P0731: Gear ratio error in 1st gear
- Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit

P0871: Transmission Fluid Pressure Sensor Switch C

P0876: Transmission Fluid Pressure Sensor Switch D

Emissions Codes:

P0400: Exhaust Gas Recirculation Flow Malfunction
- Harness or connectors (EGR volume control valve circuit is open or shorted.)
- EGR volume control valve stuck closed
- EGR volume control solenoid valve
- Dead (Weak) battery
- EGR temperature sensor and circuit
- EGR Valve

How to fix :
- Clean EGR Valve
- Repair EGR harness or connector
- Replaced EGR volume control solenoid valve
- Replaced EGR volume control valve

P0440: EVAP Emission Control System Malfunction
- Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Incorrect fuel tank vacuum relief valve

How to fix:
- Retight or replaced fuel tank filler cap
- Replaced damage or leaking EVAP canister

P0456: EVAP Control System Leak Detected (Very Small Leak)
- Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Incorrect fuel tank vacuum relief valve

How to fix:
- Retight or replaced fuel tank filler cap
- Replaced damage or leaking EVAP canister

P0441: EVAP Emission Control System Incorrect Purge
- Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Incorrect fuel tank vacuum relief valve

How to fix:
- Retight or replaced fuel tank filler cap
- Replaced damage or leaking EVAP canister

Based on the info check your EVAP system. I would check for leaks and maybe replace the EGR and the canister.

For the transmission check the TCM also you may need to take it to a mechanic though.

Hope this helps a little.

- Tech 101 (ASE CERTIFIED MASTER TECHNICIAN)
- Larson's Mobile Auto Repair
- 209-845-7620
- Oakdale, CA

Dec 31, 2010 | Dodge Pickup Cars & Trucks

1 Answer

It wont get out of first gear and when it starts going to fast in first gear it starts sputtering


Check your fluid level for the transmission. If the fluid is good you either need a transmission rebuild or possibly something as simple as a Fluid and Filter change. Unfortunately a transmission shop will need to check this out. You can try manually shifting it for a short while but the longer you go the more expensive it is going to be to repair.

Nov 23, 2010 | 2003 Saturn L-Series

1 Answer

My car won't go into gear


if you shift it and it doesnt engage it could be a transmission failure
if it wont let you shift it out of park-then a common problem with the L series was the body control module shorting out internally-this controls the shift lock
the only way to fix this is to replace the bcm(body control module)
probably runs around $300-$500 depending on your location

Aug 09, 2010 | 2003 Saturn L-Series

1 Answer

The car is starting in third gear and sometimes


Yes the nuetral safety switch mounted on the transmission easy to replace.

Dec 02, 2009 | 1986 BMW 7 Series

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