replaced knock sensors, still throwing knock sensor code (SC400)
#1
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replaced knock sensors, still throwing knock sensor code (SC400)
for about a month now my '93 sc400 had been sending the code 52 - knock sensor #1 check engine light about once a day or so. so about 3 days ago i spent ten hours removing the intake manifold and replacing both knock sensors. the next day i got the same check engine code again. ive heard that the wiring to the sensors can go bad and cause the check engine light as well, but i cant really seem to find replacement knock sensor wiring any where. just trying to see what i can/should do because i am sick of the light going off and retarding the timing when ever i drive. thanks!
#4
get an multimeter and check for continunity for the wires back to the ecu.. from experience these ecu lies a lot.. if u got a sc400, there are 2 knock sensors..u can switch the knock sensors. and see if the bad sensor is actually bad. if u get the same code the chances are knock sensors are okay and its related to wires or possibly something else..
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