92 Sentra..idle switch..where?
roonie
06-26-2007, 04:29 PM
Can someone tell me by the below link, where i might find what is called the "idle switch" on my daughters 92 Sentra.The car goes down the road just fine but shakes real bad and stalls at idle.The idle switch code also came up when i pulled the codes.I also got an injector leak code (45),knock sensor code (34) and injector curcuit code (51).The car sounds like a tractor when running as it is crackling back through the throttle body.This is the 1.6 version.Any help would be great..thanks in advance
http://img.photobucket.com/albums/v359/roonie/tile-1.jpg
http://img.photobucket.com/albums/v359/roonie/tile-1.jpg
Torch
06-27-2007, 03:09 AM
Hi,
I saw your message in the posting I have here...
From that picture I am not sure where the idle switch is, but on the 84 that I am working on there is a little micro-switch that closes a circuit as soon as the throttle shaft is moved something like 1mm (it does take very much).
Locate where the throttle cable attaches itself to the throttle body, there should be something attached to the same shaft that opens and closes a circuit, it might be a micro-switch or it could be some kind of optical (LED) switch, I'm not sure what it is going to have. Oddly enough I had an old microwave oven years ago that used this same micro-switch as part of the door assembly.
Never mind about previous comments...
My book only goes to 1990 but what it has for the Idle Switch appears to be in your picture that black thing in the fore ground with a screw on each side, the plug on top and the little tiny white print at the bottom.
Testing it: Unplug connector, hook ohm meter up to it, ohms should go to zero at roughly 1050rpms (1990 model).
Leaking injectors, not good, will cause all kind of problems, eventually will cause the engine to not run or run horribly bad, would explain the bad idle, engine is not getting enough vaporized gasoline sucked into it and is getting raw fuel instead which either sits in the intake manifold and slowly turns into a big puddle or gets sucked in in large droplets and does not burn efficiently.
Knock sensor, is the correct octane of gasoline being used? If so try buying gas somewhere else. Also check the ignition timing (if possible on this model).
What do you mean by "Crackling back up through the throttle body" ?
Injector circuit, make sure all the electrical connectors are pushed on tight onto the throttle body, if so remove each one and verify all the connections are clean and not oxidized.
I saw your message in the posting I have here...
From that picture I am not sure where the idle switch is, but on the 84 that I am working on there is a little micro-switch that closes a circuit as soon as the throttle shaft is moved something like 1mm (it does take very much).
Locate where the throttle cable attaches itself to the throttle body, there should be something attached to the same shaft that opens and closes a circuit, it might be a micro-switch or it could be some kind of optical (LED) switch, I'm not sure what it is going to have. Oddly enough I had an old microwave oven years ago that used this same micro-switch as part of the door assembly.
Never mind about previous comments...
My book only goes to 1990 but what it has for the Idle Switch appears to be in your picture that black thing in the fore ground with a screw on each side, the plug on top and the little tiny white print at the bottom.
Testing it: Unplug connector, hook ohm meter up to it, ohms should go to zero at roughly 1050rpms (1990 model).
Leaking injectors, not good, will cause all kind of problems, eventually will cause the engine to not run or run horribly bad, would explain the bad idle, engine is not getting enough vaporized gasoline sucked into it and is getting raw fuel instead which either sits in the intake manifold and slowly turns into a big puddle or gets sucked in in large droplets and does not burn efficiently.
Knock sensor, is the correct octane of gasoline being used? If so try buying gas somewhere else. Also check the ignition timing (if possible on this model).
What do you mean by "Crackling back up through the throttle body" ?
Injector circuit, make sure all the electrical connectors are pushed on tight onto the throttle body, if so remove each one and verify all the connections are clean and not oxidized.
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