I will start from the beginning.. got code 52 a while back, after countless hours of research i finally got the balls to change the wire going under the intake... got her all back together, and still code 52.. so i started checking out the other wire going back to the ecm.. noticed it looked nasty...so i got a new section of wire with the connector of another truck, soldered it up real good, taped her up real good, still code 52... So now i dont know what to do.. i really wanna rule everything else out before i blow $170 on a new sensor and have to rip it all apart yet again. i put an ohms tester on the wire i spliced.. read 3.29... definitely continuity... put it on the new wire goin to the sensor and i get no reading... should there be continuity to the sensor? is the reading stated above ok for the harness to ecu? I am running out of ideas here, i would figure there should be continuity to the sensor, but others have said the only way to test that is with an oscilliscope or something? So now i am lost.. should i just buy the sensor rip it all apart again, and hope it fixes my problem? or could i still have a bad connection? HELP.. im running out of beer and money

 

just checking but did you disconnect the battery to clear the CEL after replacing your wiring?

 

yes... i did...sorry should have mentioned that... i have done alot of research..and im pretty sure i did everything by the book...

 

Also.. i was wondering.. is there a way to check that there is signal getting to the knock sensor..like using multi meter to check for power at the harness? at least if i know im getting power at the harness.. ill know it has to be the sensor....right? i know its only a millivolt circuit.. do i need a special tester for this.. or will a cheapo multimeter do the trick? i have been racking my brain on this for nearly 2 weeks now!!

 

bump for a response

 

a milti meter is fine

 

so if i test continuity to ks i should have a reading...right? mine does nothing.. indication of bad ks.. or no complet cicuit to ks from connector? thanks for the reply!!

 

bumped again...sorry

 

Check this link out.. it could be helpful to a lot of people. however.. it didnt answer my question about continuity to the knock sensor..any thoughts?

http://www.supras.com/06/techcenter/display.php?QID=69

 

Did you replace the knock sensor?

 

no..i did not replace the sensor itself...just the $12 wire(i have been told over and over again that the sensor almost never fails)...im just not sure if there should be continuity to the sensor or not, if i can rule out the wiring as my problem...ill gladly get a new sensor...otherwise..i'd rather not spend the money on a sensor that cannot be returned

 

I don't believe there is a signal TO the knock sensor. The knock sensor generates a signal when it detects a knock. They do go bad.

There is also an early and later style knock sensor and harness

 

yes...sorry...the signal comes from the sensor..and i found out the hard way about the different styles for different years, i just cant figure out if there should be continuity between the connector and the sensor.. i would think there should be, but have not yet been able to confirm it.

 

hey where do you find what code means what??

 

 

the haynes, chiltons or mitchels would have it..search yt for the code you have or ...the last one is real obvious!!

 

lol tried that i can only find select codes not a whole listing of all of them?

 

ok helpful thanks

 

what code do u have?

 

im going outside to find out now