British Slave
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Has anyone actually had a drivability issue that was caused by the P/N switch?
CK5
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Park/Neutral switch
- Thread starter British Slave
- Start date
should only come in to play when starting only .
but anything is possible.
dont forget the ing switch on the steering colm that gets a LOT of use and power run threw it. there over 22 years old at min if stock as last built was 91 for square body . seen a few go bad and cause problems.
but anything is possible.
dont forget the ing switch on the steering colm that gets a LOT of use and power run threw it. there over 22 years old at min if stock as last built was 91 for square body . seen a few go bad and cause problems.
British Slave
1/2 ton status
- Joined
- Jul 25, 2007
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According to GM, it controls the operation of the torque converter and the idle air control. In diagnosing a rough idle issue, check and adjust P/N switch keeps showing up in the chart.
Was that a typo or what is the ing switch. (IGN maybe)
Was that a typo or what is the ing switch. (IGN maybe)
They are using the onboard computers to do more and more, and for them to be able to do that, they need more inputs.
Just as a for instance, a lot of cars will intercept the air conditioner compressor on command and will increase the idle speed of the engine before letting the compressor turn on at idle.
At speeds above idle, the compressor comes on immediately.
So, it would make sense for the engine to idle up when you go to put the transmission in gear. With no load on the engine, you can let the engine idle slower to save a little gas.
As for the lockup, not sure what the advantage is. Maybe they actually lock up the converter in park and neutral to remove the load of the converter at idle.
Just as a for instance, a lot of cars will intercept the air conditioner compressor on command and will increase the idle speed of the engine before letting the compressor turn on at idle.
At speeds above idle, the compressor comes on immediately.
So, it would make sense for the engine to idle up when you go to put the transmission in gear. With no load on the engine, you can let the engine idle slower to save a little gas.
As for the lockup, not sure what the advantage is. Maybe they actually lock up the converter in park and neutral to remove the load of the converter at idle.
