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Knock sensor replacement

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Old Dec 28, 2003 | 04:42 PM
  #1  
runner's Avatar
runner
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Tuned
20 Year Member
Joined: Jan 2001
Posts: 326
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From: Connecticut
Knock sensor replacement

Hi All

Now that I have my tranny out of my 88 F250 302 5 speed due to clucth replacement, I noticed that I have a better view at the knock sensor. This sensor is way behind the engine block.. Need to rplace because the top is broken off.

Does anyone have experience getting this out and how is it done.

thanks,

Runner
 
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Old Dec 28, 2003 | 09:02 PM
  #2  
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Slade901
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Joined: Dec 2003
Posts: 354
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From: Memphis, TN USA
I have not done Knock Sensor before but I've done CPS. Anyway the book states to just unscrew the Knock Sensor. You might need some wrench to take off or tighten it.
 
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Old Dec 28, 2003 | 10:14 PM
  #3  
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tripndrag
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Joined: Nov 2002
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It just unscrews. I just replaced my engine, swaped to a Mustang shortblock and mass air conversion. The new block didn't have the hole for the knock sensor so I called FMS to inquire about what I should do. I removed it to check it out. It will be easy to install a new one in your block.
 
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Old Dec 29, 2003 | 02:35 AM
  #4  
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BigSix1
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Joined: Sep 2003
Posts: 630
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From: Northeast
How Aout on the 300 Six?

All:

Does anyone know where the knock sensor is on the 4.9 six? I've got the code indicating a bad knock sensor and want to replace it.

Is it only possible with the tranny out?

Is there any way to test these things? I'd like to scavange one from a junk yard, but test it before I install the "new" one.

Peter
 
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Old Dec 29, 2003 | 06:25 AM
  #5  
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runner
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Tuned
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Joined: Jan 2001
Posts: 326
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From: Connecticut
Peter,

Don't know how to test one. There a line that goes to mine and it's broke off. On my F250 302 you can see it behind the back of the engine block and could get access to it. I could see it alot better with the Tranny out and have better access. Don't think you have to have it out to do this.

Runner
 
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