Help replacing rear Knock Sensor

Kevin · 08-11-2009, 03:33 AM

so i need to replace my rear knock sensor for my 1987 turbo... i tried getting a socket and wrench in there but the socket wont clear the starter??... i dont have a wrench big enough lol any tips/pointers?

Igknyte · 08-11-2009, 09:42 AM

where is the knock sensor anyways? i got a manual but doesnt say where its located...

Kevin · 08-11-2009, 12:31 PM

theres two of them.. one near the front of the block under the lower intake manifold and behind the alternator.. this ones the easy one to get to.
the second one is near the back of the block at the same height level.. just infront of the starter.. thats why i cant get it out because the starter is in the way. i can get a socket in there.

mirage83 · 08-11-2009, 03:47 PM

You'll have to loosen (but not necessarily remove) the starter in order to get to that KS. That's why everyone hates having to deal with that KS.

Kevin · 08-11-2009, 03:51 PM

so do i go in from underneath? or do i have to remove the manifolds

mirage83 · 08-11-2009, 06:47 PM

Going from underneath is the easiest. Note that I said easiest, not easy. It's still something of a PITA, but less so than many other tasks maintaining these cars.

08-11-2009, 03:33 AM	#1
Kevin 3" Exhaust Join Date: Apr 2009 Location: Ontario, Canada Posts: 194	Help replacing rear Knock Sensor so i need to replace my rear knock sensor for my 1987 turbo... i tried getting a socket and wrench in there but the socket wont clear the starter??... i dont have a wrench big enough lol any tips/pointers?

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08-11-2009, 09:42 AM	#2
Igknyte Intake Join Date: Aug 2009 Location: San Francisco Bay Area, CA Posts: 31	where is the knock sensor anyways? i got a manual but doesnt say where its located...

08-11-2009, 12:31 PM	#3
Kevin 3" Exhaust Join Date: Apr 2009 Location: Ontario, Canada Posts: 194	theres two of them.. one near the front of the block under the lower intake manifold and behind the alternator.. this ones the easy one to get to. the second one is near the back of the block at the same height level.. just infront of the starter.. thats why i cant get it out because the starter is in the way. i can get a socket in there.

08-11-2009, 03:47 PM	#4
mirage83 12psi boost Join Date: Feb 2007 Location: Georgia Posts: 359	You'll have to loosen (but not necessarily remove) the starter in order to get to that KS. That's why everyone hates having to deal with that KS.

08-11-2009, 03:51 PM	#5
Kevin 3" Exhaust Join Date: Apr 2009 Location: Ontario, Canada Posts: 194	so do i go in from underneath? or do i have to remove the manifolds

08-11-2009, 06:47 PM	#6
mirage83 12psi boost Join Date: Feb 2007 Location: Georgia Posts: 359	Going from underneath is the easiest. Note that I said easiest, not easy. It's still something of a PITA, but less so than many other tasks maintaining these cars.