Knock sensor location '00 W Block`
For some reason the knock sensor on this truck is just laying in the engine bay on the passenger side ontop of the intake manifold, no clue why, i cant seem to find where it bolts in at. Its on a '99 Trailblazer 4DR 4WD with a 2000s block out of a similar configuration Blazer.
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Mods
I don't 100% know if this will apply to your year but my Morf was a 92 and this what I have. Depending on the threads on the knock sensor some were installed in the head into the water jacket - some were in the back of the head and just screwed into the head mine has both ..... |
Originally Posted by Mods
(Post 717246)
For some reason the knock sensor on this truck is just laying in the engine bay on the passenger side ontop of the intake manifold, no clue why, i cant seem to find where it bolts in at. Its on a '99 Trailblazer 4DR 4WD with a 2000s block out of a similar configuration Blazer.
early 1 wire sensor is 1/4" NPT thread 2 wire sensor is supposed to be 5/16-18 thread |
Originally Posted by LesMyer
(Post 717257)
That's because the knock sensor mounting hole in the block changed. Early sensors (pre-2001) were 1-wire. Later sensors were 2-wire and completely different with a different size mounting hole. You should be able to find an adapter made specifically to mount the old style knock sensor on the 2001+ block. And no, you can't use the 2-wire sensor in your 1999. These sensors mount vertically next to the distributor.
early 1 wire sensor is 1/4" NPT thread 2 wire sensor is supposed to be 5/16-18 thread |
Originally Posted by Mods
(Post 717259)
Its a Pre 01 Block, early 2000 casting.
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Originally Posted by LesMyer
(Post 717262)
then look for the mounting hole close to the oil pressure sending unit.
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oil pressure sending unit is beside the distributor
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3 Attachment(s)
Originally Posted by Mods
(Post 717264)
Im not quite sure where that is either les.
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Originally Posted by LesMyer
(Post 717266)
Maybe these attachments will help - 1999 and 2000 have identical sensors in identical locations. 2001 uses different sensor, same location, with different size threaded hole in the block..
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Maybe it wasn't original to the Blazer it came out of. Obviously engine is a 2001+. How about engine ID code on block at front of passenger side head
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