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The only speedometers that will work in your 1993 240 are the K40168 and the K39200. The other K10042 and K9800 speedometers are designed for the 12 tooth tone ring used in non-ABS differentials. The wiring is flipped on the speedometer connector. If you don't have the correct speedometer, it won't work in your car at all when you plug it in.
I don’t remember the exact numbers but I do remember pulling one off of a 1992 240 with the same numbers and everythingWhat year car did you pull the speedometer from?
What is the # (starting with K) on each speedometer face?
Only certain models are directly interchangable. If you have a way to generate a low voltage pulse signal you can test the speedometer on the bench. If you have a cheap scope you could test the sensor.
Automotive Diagnostics with a Cheap Handheld Oscilloscope
Overview Over the last few years, simple handheld battery-powered oscilloscopes have become available for less than $40. This thread is about the FNIRSI DSO152 oscilloscope, and how it can be used for automotive diagnostics. The examples here are from a Volvo Redblock Engine with a Bosch LH2.4...
And I just hooked up the obd and it said 3-1-1. It never said it before when I first ran into this issue but it is now saying itWhat year car did you pull the speedometer from?
What is the # (starting with K) on each speedometer face?
Only certain models are directly interchangable. If you have a way to generate a low voltage pulse signal you can test the speedometer on the bench. If you have a cheap scope you could test the sensor.
Automotive Diagnostics with a Cheap Handheld Oscilloscope
Overview Over the last few years, simple handheld battery-powered oscilloscopes have become available for less than $40. This thread is about the FNIRSI DSO152 oscilloscope, and how it can be used for automotive diagnostics. The examples here are from a Volvo Redblock Engine with a Bosch LH2.4...
yeah that both read k40168
If I’m driving freeway speeds it only has high idle when I put it in park before turning it off, but if I drive city speeds it won’t do that.
That makes sense. US market 240s use the same speedometer in 1992 and 93. Before we go any further, you didn't hook up the white/red wire to the instrument cluster, did you?
Sounds like your ECU is not getting speedometer signal either, check what @2manyturbos says
The reason I asked is if you hook that wire up to the pin on the back of the cluster you kill the speedo the first time you start the car. The previous owner may have done exactly that if you bought the car with a dead speedo. Anyway, the ABS clusters are known to be failure prone. You may have bought a dead speedo from the wrecking yard.
Wouldn't a dead speedo not have the High idle issue? Isn't that typically a wiring or sensor issue?
Because when I bought the car it worked fine, but then one day it was all over the place wile sitting at a stop sign and it continued to do that for a week before it gave up and now the abs light it on the second I move
A dead speedo will result in a high idle condition after driving highway speed. The ECU needs the modified speed signal in order to know when the car has come to a stop.
That sounds more like a wiring or rear axle speed sensor problem. The wiring coming from the rear axle speed sensor splits before reaching the front of the car. The same two wires go to the ABS computer and another pair from the same 2 wires go to the speedometer. If you lost both ABS function and the speedo at the same time you have a harness/sensor problem.
These seem to be EZk codes, not ECU. Does it run like crap with bad fuel economy? Or is this a stick shift car?
My fuel economy seems to be fine and no it’s automatic
Those codes dont match any ECU code, and the EZK codes are saying your Knock sensor is faulty. Unless I am missing the codes on the list. It is lh 2.4 right?