I need to test and potentially replace the CHTS. I see the lead to the sensor has a 2 inch long red "torpedo" looking device between 2 black connectors. It looks original as the 2 connectors are solid black with VW stamped on them. Anyone know what the red torpedo is and how the 2 black connectors come apart???
Steve
The CHT sensor should be a small 'plug' with a single black wire coming off of it.
It's a resistor. I forget the value, Brad Anders' D-jet webpage will have the number. (240 ohms??) http://members.rennlist.com/pbanders
The plugs just pull apart. The sender wire and connector unplugs from the plastic housing on the resistor, and the resistor unplugs from the plastic housing on the wiring harness.
--DD
the torpedo is likely a inline resistor, used on the 1973 model 2.O liters. this added resistance which made the enigne run a bit richer than without.
Factory installed 270 ohm resistor for 73 2 liter. Early 2.0 engines used 037 1.7 ECU and the resistor corrected idle mixture.
Old thread update. My "red torpedo" cleaned and updated resistor along with a factory replacement from Auto Atlanta.
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