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Will a bad ignition switch cause problems with the transmission

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SOURCE: 1994 Chevrolet G30 transmission problem

Its most likely the brake light switch, also connected to the steering column. It controls the Torque Converter Clutch, and when it is out of adjustment, it will not engage upper gears properly...The computer gets confussed and tries to protect the transmission.

Posted on Apr 05, 2011

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How to fixed wont start engine..


test the following and fix it. GOD BLESS you.fe35589e-c7d2-4fa3-a813-99841956a6cb.gif
If nothing happens when you turn the ignition key to the "Start" position, it means that the starter motor doesn't turn over the engine. Most commonly this could be caused by a dead battery;
If the battery checks out OK, but the starter still won't crank, there could be a number of possible reasons. Here are some of them:

The ignition switch could be bad - it's a common problem. An ignition switch is an electrical switch installed at the back of the ignition lock mechanism. If jiggling the key in the ignition helps start the car, the ignition switch should be checked first.
The starter solenoid control wire could have a bad connection.
The starter motor itself or a starter solenoid could be bad.
A neutral safety switch is bad. If a car doesn't start with the transmission in Park, but starts in Neutral, it could be caused by a problem with a neutral safety switch.
.
A problem with vehicle's security system or some other electronic control module (e.g., ECM, BCM) may also prevent the starter from operating.

Jul 27, 2013 | 2004 Chevrolet Aveo

1 Answer

Will not start / computer key?


test the following and fix it. God bless you

If nothing happens when you turn the ignition key to the "Start" position, it means that the starter motor doesn't turn over the engine. Most commonly this could be caused by a dead battery;
If the battery checks out OK, but the starter still won't crank, there could be a number of possible reasons. Here are some of them:

The ignition switch could be bad - it's a common problem. An ignition switch is an electrical switch installed at the back of the ignition lock mechanism. If jiggling the key in the ignition helps start the car, the ignition switch should be checked first.
The starter solenoid control wire could have a bad connection.
The starter motor itself or a starter solenoid could be bad.
A neutral safety switch is bad. If a car doesn't start with the transmission in Park, but starts in Neutral, it could be caused by a problem with a neutral safety switch.

A problem with vehicle's security system or some other electronic control module (e.g., ECM, BCM) may also prevent the starter from operating.
see the diagram attached and proceed.1e981703-9c1f-4bcc-b4b9-95d04805c4c5.gif

Jul 27, 2013 | 2002 Buick Park Avenue

1 Answer

2006 325i bmw


The first thing to do would be to check all fuses. Sometimes a very random blown fuse can cause this. Also unhook the battery for one hour to reset all systems, and try a jump start if you have not just to be sure it isn't a battery issue. Also try locking/unlocking the key driver's door a few times using the key in the door. If the fuses are good and the battery reset does not help, nor a jump or key in the door, then there are a few other things that can cause this such as bad key - try another one, bad brake light switch, the switch is above the brake pedal, shifter not fully in park (auto transmission only) - try moving it around a bit, bad transmission position switch, bad clutch switch, dead starter/solenoid/relay or bad ignition switch/cylinder/start button.

Jul 03, 2013 | Cars & Trucks

1 Answer

Transmission is not shifting but trans is good, computer is good too


Wow! That sounds like a really expensive way to diagnose the problem! YES, a bad ignition switch can can cause your transmission to not shift correctly. If the problem had been properly diagnosed, you would have known this LONG before replacing the computer and the transmission if this was the cause. You say you "checked [your] wires" and that "all [are] good", but apparently, this is not the case. If the wires had been PROPERLY checked, you would know if you have the correct voltage at the transmission solenoids from the ignition switch and it would be unnecessary for you to ask this question.

May 13, 2012 | 1997 GMC Jimmy

1 Answer

1994 Chevrolet G30 transmission problem


Its most likely the brake light switch, also connected to the steering column. It controls the Torque Converter Clutch, and when it is out of adjustment, it will not engage upper gears properly...The computer gets confussed and tries to protect the transmission.

May 11, 2010 | 1994 Chevrolet Sportvan G30

2 Answers

Car won't start. My guess is either ignition or perhaps starter. Battery has plenty of juice and fuses on fuse panel all look good.


IF YOU TURN IGNITION SWITCH ON POSITION GET NO DASH LIGHTS RESPONSE.IGNITION SWITCH IS BAD.IF YOU ARE GETTING DASH LIGHTS.YOUR STARTER SOLENOID OR STARTER IS BAD.THE STARTER REAY IS BAD OR FAULTY CLUTCH PEDAL SWITCH FOR MANUAL TRANSMISSION OR TRANSMISSION PARK NEUTRAL SWITCH OR SHIFT SENSOR BAD.THESE ARE THE POSSIBLE CAUSES.

Mar 07, 2010 | Mercedes-Benz 300-Class Cars & Trucks

1 Answer

Vehicle will not shift into park and ignition key is stuck in acc 1 postion


CHECK BRAKE LIGHT SWITCH FUSE OR BRAKE - TRANSMISSION SHIFT INTERLOCK SOLENOID FUSE.IF BOTH FUSES OKAY.THE PROBLEM COULD BE A BAD BRAKE LIGHT SWITCH OR A BAD BRAKE TRANSMISSION SHIFT INTERLOCK SOLENOID.YOUR IGNITION SWITCH IS BROKEN.MAKE SURE YOUR BATTERY IS 12.5 VOLTS.IF NOT YOU CANT SHIFT INTO PARK.

Aug 04, 2009 | 1996 Cadillac Seville CA Value

1 Answer

2000 Jimmy , put in park , turn off key & key wont come out of ignition.


Does the transmission work in all 4 gears? I've seen bad ignition switches cause this. Not the ignition lock cylinder, the electrical switch.

Mar 16, 2009 | 2000 GMC Jimmy

1 Answer

I have a 2003 gmc yukon that will not shift into park


I can't read your whole post but I'll bet you have a bad ignition switch. Not the Ignition lock Cylinder( even though the key won't come out) there is circuit of the ignition switch that goes bad that causes the key not to come out of the lock cylinder and it also causes the transmission to stick in 3rd gear. But please repost so I can read your whole problem.

Mar 01, 2009 | 2003 GMC Yukon

3 Answers

'92 Honda Accord. Starter will not engage.


I Had This Same Problem I Got 3 Bad Ones In A Row And Finally Got One That Worked Good. A Good Thing To Do Is Before You Buy It Have Them Test It.

Jan 26, 2009 | 1991 Honda Accord

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