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Symptoms of a Bad or Failing Neutral Safety Switch
Common signs include the engine not cranking in park or neutral, not cranking at all, or cranking in any gear.
Symptoms of a Bad or Failing Transmission Position Sensor (Switch)
Common signs include the car not starting or moving, transmission going into a different gear than selected, and the vehicle going into limp mode.

Related questions

Question
My car's reverse is acting as if it is in neutral.
Hi and thanks for your question. The issue is not the transmission but rather the transfer case. The low to high speed shift module on the transfer case is losing power. Check the harness to the shift module motor on...
Question
The car turns off when shifting the gear to neutral automatically.
This is likely related to what is called a neutral safety switch. This is an electrical switch near your transmission that is designed to not allow the car to start when in any gear other than park. Occasionally, this switch...
Question
Was on highway fuel disengaged but still had transmission but a few minutes and transmission disengaged
Hello. Without additional detail as to what you are referring to by saying the fuel disengaged, this may be difficult to diagnose without running a scanner on the vehicle. However, there are many things that can cause the fuel supply...
Question
My car's gear won't shift. Only neutral works. I just changed the transmission fluid.
Hello and thank you for your question. When you changed your transmission fluid, you need to ask yourself what the color of the fluid was when it drained out. If the fluid was very dark or black, then when putting...
Question
Clutch problems
Hello and thank you for your question. With the clutch staying in neutral all the time, go under the vehicle and check the slave cylinder return spring. See if the return spring is broken or has fallen off. If the...
Question
Car bogging down in gear
Hello and thank you for your question. There could be a problem with the brakes not releasing or the transmission torque converter could have failed. Check all of the brakes and make sure that they are adjusted and working properly....
Question
The car won't start.
Hi there. Assuming that the battery is good, the connections are clean and tight, the replacement starter is good, the security light is turning off. There are several things that still can affect starter operation. If, the vehicle will start...
Question
Car has increased RPMs in neutral. Nissan Sunny 2008 (Japan Made)
The computer over time learns to control the idle and after you cleaned the throttle body it will cause the idle to go up from the increased air getting into the engine. If you disconnect the battery for about two...
Question
My car won't catch in gear. It is slipping right pass the gears.
Hi there. Your shift cable may have come loose on the transmission shift linkage connection either at the transmission or at the steering column linkage under the dash on steering column. Have the cable ends inspected to see if the...
Question
Car doesn't always start in Park but then will start in Neutral..the dealer says it needs new starter..
Hello - if your starter successfully cranks the engine in Neutral, but not in Park, the starter itself is likely just fine. The problem is with the "Neutral Safety Switch", sometime called a range selector switch. This is the component...
Question
Low RPM/ Won't Shift
Hello and thank you for contacting YourMechanic. It seems like the IAC (idle air control) valve is malfunctioning. Check the wiring to the IAC for any debris and any corrosion. If the wiring harness is in good shape, then I...
Question
problems with changing gears
Hi there. If the transmission works fine most of the time then the transmission itself should be fine. Most of the time this is caused by an issue with the valve body in the transmission or a speed sensor problem....
Question
Code P0705 - 2008 Ford F-150
As with most diagnostic trouble codes, code P0705 does not necessarily identify failed parts. All you can assume with the code is that the PCM is not getting the signal it "expects" from the switch - no signal at all...
Question
When I drive my car for 5 minutes, it shifts fine then slips into neutral. I have to shut it off for 1-2 minutes but it will do it again.
Hello, thanks for writing in today. It is possible that this is a speed sensor failing issue. There are a few things to check for. Are there any problem codes thrown? What color and smell does the transmission fluid have?...
Question
How can I tell if I have a bad neutral safety switch?
Hello, thanks for writing in. The switch should show "connectivity" (zero resistance) in the "Neutral" position for a successful start. Keep in mind that these symptoms could also be from the ignition switch. If you need help having this issue...
Question
Car neutral when shifting - 1998 Mitsubishi Galant
Hey there. The transmission control module (TCM) helps regulate fuel efficiency and power while storing information about the transmission system in its memory. A faulty transmission control module may cause a delay in acceleration or erratic shifting of gears. ...
Question
Transmission is not responding when I put it in gear. All gears act like neutral.
Hi and thanks for contacting YourMechanic. It sounds like the pump pressure switch is overloading and causing a mass dump. Check the wiring harness to the transmission and see if there is power to the harness. If there is power,...
Question
my car is a Malibu 2008 stuck in neutral gear what wrong with it
If the gear selector is stuck in neutral, there can be a few causes. The brake light switch may be shorted. Also, the shift interlock mechanism may be out of adjustment or broken or the shifter linkage / cable may...
Question
Why is my 4-wheel drive engaging while I'm driving?
Hey there. Driving with 4x4 on when it is not needed can be rough on the axles, transmission, and hubs. The 4x4 engaging on its own can be the result of a mechanical error or an electrical error. Mechanically...
Question
Neutral switch replaced, car will not start in park.
Hello. This switch has a small range of adjustment available to you. Although it's a hassle to crawl back under the car to do so, loosen the 2 bolts holding the switch to the transmission, and move the switch slightly...

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