help needed on a 87 4x4 ranger 5 speed tranny issue
I have a 87 4x4 ranger, model STX, with an aluminum housing 5 speed transmission, that has a square steel inspection plate that is bolted to the bottom of the tranny, with a drain pug in it's center..
I was wondering what the purpose of the switch, sensor, or whatever it is called, which has two wires attached to it, that's threaded and screws into the top of the transmission, just ahead of the 5 speed shifter mounting plate that's bolted to the transmission housing.. I think my transmission is either a mitsubishi fm145, or 146 ??
the switch, I was referring to has threads on it that goes right into the tranny, on top, just a little bit in front of the 5 speed shifter mounting plate..
the wires on mine are mine are broken off, too close to the base, and can't be reattached.. could these wires being broken off, possibly, be the cause of a 2.9 idling weird, sometimes, and a engine running erratic, besides, quite often..
does anyone know what the function of this switch, sensor, or whatever it's purpose is really for ??
I thought this sensor or switch, or whatever it is, might function as either a neutral switch, or else possibly as some kind of tranny sensing speed sensor, for providing information to the vehicle's computer, for telling it what gear the tranny is in, as it's being driven..
or could it be this switch, for whatever purpose it's function is for, could be for completing a circuit to a light, somewhere, on the dash, that's suppose to let you know when the tranny is in either 4x4, or high or low range, being my owner's manual indicates that there is a light on the dash which is suppose to indicate so..
however mine has never worked.. being the wires are broken off my tranny switch, as I described, could this be the purpose for which it was designed for ??
would like to hear from those who can provide some accurate and knowledable information..
You will need a manual computer to pass smog. You MAY need a door post sticker as well, since you will fail smog if the idle speed is wrong, and it is different for manual transmissions. Call your smog ref; this would seem to be a no-brainer for approval.
"Hunting idle" on a manual computer means the computer doesn't know it's in neutral -- this is what the neutral sensing switch is for. You don't have to control idle if you're in gear. I don't know if there is something similar in the auto computer when the TCC is locked. There may be, and your computer can't know if the TCC is locked because it can't talk to it....
A lit check engine light is a guaranteed fail. A hunting idle is a probable fail.
As for your broken EGR lines, if it's the hard plastic green and red ones, they can be easily patched with some bulk vacuum lines. I like to seal them with a VERY light coat of black RTV (be very careful not to block the line!).