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One error code, P0722, tranny speed sensor is dead or rather, no output. Shop manual says could be dead sensor or bad ground. Manual also says should stay in 3rd gear and not make it to 4th.

As far as I can tell, the car shifts into 4th around 50 mph as it usually does. 1999 Elantra, 130,000 miles, 2.0 liter engine, 4-speed overdrive transmission.

I found the sensor for $50. Actually this one sensor replaces both the input and the output speed sensors unlike later models which had separate sensors to buy.

My question. Is it the speed sensor? How difficult is it to get to this speed sensor? The shop manual, well, I cannot find the specifics in replacing it in the factory shop manual.

I asked one chain to do it and they refused so either they are not too helpful or it's really difficult, like buried under the console and need to drop the tranny. But I doubt that.

Anyone have some clues for me? Thanks.

Definition of Diagnostic Trouble Code P0722 Category Powertrain
Definition Output Speed Sensor Circuit No Signal

I also have an error code of P0422, bad catalytic converter? I get about 30 mpg which seems a tad low for this car, not bad, but Elantras I thought get a little more mpg. Also an error code of P0303 or 3rd cylinder misfire but that comes and goes. Car does run rough when first starting up sometimes. Time to change plugs, 30,000 miles.
 

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1999 is the "bottom pan" transmission, and uses 2 generator on pigtail/connector assembly...

Part number is :

45955-22611 GENERATOR ASSY-PULSE $49.74

We do not have one on hand..
 
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