How can I tell if my catalytic converter was removed from my 99 dodge intrepid

SOURCE: replace a catalytic converter for a 1999 dodge stratus

The cat is located just off of the exhaust manifold. You have to remove things to get out of the way. Loosen down pipe to converter and unclamp the converter and it should pull right out. Use a good penetrating oil to help loosen the down pipe bolts.

SOURCE: 99 dodge intrepid blower motor not working

No. Pull out right front inner fender well cover and motor is on firewall. Four bolts max.

SOURCE: location of speed sensor a for 99 dodge intrepid

The "Vehicle Speed Sensor" signal is generated by the transmisson output speed sensor. That is the one located at the rear of the case. It is externally mounted. That supplies "vehicle speed" info to the other On-Board Computers. The input turbine speed sensor is located just behind the bell housing area of the case. I believe the trans controller is the only module that needs that info. The Crank Position Sensor give engine RPM info and it is located on the bell housing near the engine block. I hope this helps.

SOURCE: how to replace/remove both catalytic converters

Below are the steps needed to remove the catalytic converters. You may be able to first remove the band clamp from between the converter and the exhaust manifold, then loosen the rest of the system and to get enough clearance to slide the converter towards the front of the vehicle but you will need to first remove the clamp that holds the converter to the rest of the exhaust. Hope this helps
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Both Catalytic Convertors

First you need to raise the vehicle.

Next, you need to pry the insulators from the support brackets and support the muffler and tailpipe with jackstands.

Then, loosen the the catalytic converter down pipe-to-front resonator clamps and separate the front resonator from the converter down-pipes. Carefully lay the free laying exhaust on the ground.

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Right Catalytic Converter

Then, remove the down-pipe-to-transaxle bracket nut, loosen the clamp and separate the extension pipe from the converter.

Next lower the vehicle and remove the air filter and intake ducts. Disconnect the wiring harness for the O2 sensor and the remove the sensor.

Finally loosen the band clamp at the exhaust manifold and remove the converter from the engine compartment. You may need to replace these clamps after removal because you need to pry it apart and they will leak when you reinstall.

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Left Catalytic Converter

Now disconnect the wiring harness for the O2 sensor and the remove the sensor.

Next remove the down-pipe-to-transaxle bracket nut

Finally loosen the band clamp at the exhaust manifold and remove the converter from the engine compartment.

SOURCE: 99 dodge intrepid specs

Inner main bearing cap bolts:
Torque to 15 ft-lbs, then rotate an additional 1/4 turn

Outer main (windage tray) bearing cap bolts:
Torque to 20 ft-lbs, then rotate an additional 1/4 turn

Main bearing cap cross bolts:
Torque to 250 in-lbs or 20.83 ft-lbs

Connecting road bearing cap nuts:
Torque to 20 ft-lbs, then rotate an additional 1/4 turn