knock sensor location
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Junior User
Joined: Mar 2003
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knock sensor location
HI All,
Got lots of pinging going on when I climb the hill going to my home. Thought maybe the knock sensor isn't working so checked the Haynes. It says a quick test is to smack the block with a hammer near the sensor and see if the timing changes.
Sounds like a pretty easy test - except - it doesn't tell me where the knock sensor is located other than it's in the cylinder block. Can anyone be a little more specific?
It's an '89 lariet with a 5.0 EFI and auto-tranny
Thanks
Got lots of pinging going on when I climb the hill going to my home. Thought maybe the knock sensor isn't working so checked the Haynes. It says a quick test is to smack the block with a hammer near the sensor and see if the timing changes.
Sounds like a pretty easy test - except - it doesn't tell me where the knock sensor is located other than it's in the cylinder block. Can anyone be a little more specific?
It's an '89 lariet with a 5.0 EFI and auto-tranny
Thanks
Freshman User
Joined: Feb 2003
Posts: 26
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knock sensor location
I also have 89 f150, with 302, 5.0, that has a problem with ping. I have replaced the plugs, wires, dist. cap., checked timing. Still no help, I was told by a mechanic that the problem may be a bad EGR valve. I am planing of changing it, if i can find it. I have not checked the knock sensor.
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Senior User
Joined: Mar 2002
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From: Charter Oak, Iowa
knock sensor location
The knock sensor on your 89 is on the passenger side on the backside of the block. The upper plenum is keepin' it nice and hid. A mirror helps.
Randy
Randy
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knock sensor location
if your still looking for the EGR valve and you have an EFI plant like my 5.0 try this:
look in the middle of the front of the engine on top - there is a big black plastic cover that covers the throttle linkage. to the left and foward of this unit there is an upside down cupcake looking unit that has a metal tube coming out of the bottom that goes to the exhaust manifold. That cupcake looking thing is the EGR valve. There is also a unit plugged into the top of it that has a two wire connector. This is the EGR valve position sensor.
Hope this helps
look in the middle of the front of the engine on top - there is a big black plastic cover that covers the throttle linkage. to the left and foward of this unit there is an upside down cupcake looking unit that has a metal tube coming out of the bottom that goes to the exhaust manifold. That cupcake looking thing is the EGR valve. There is also a unit plugged into the top of it that has a two wire connector. This is the EGR valve position sensor.
Hope this helps
New User
Joined: May 2003
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knock sensor location
On 5.0 EFI truck motors (old 302 firing order), pinging is usually attributed to spark cross-fire. Most troubleshooting manuals for this engine refer to this cross-fire as a usual suspect (check first).
Check the routing of the plug wires, to establish that #2 & #4 wire, or #7 & #8 wire are not against each other, and are separated as much as possible.
If that checks out, check initial timing advance, as most folks bump it to get more low end. Usually not a problem until you tow something, wear oversized tires, or the engine starts showing its age.
Check the free stuff first!
kyle1175243
90 Bronco 5.0
89 F-150 5.0
88 Mustang 5.0
Check the routing of the plug wires, to establish that #2 & #4 wire, or #7 & #8 wire are not against each other, and are separated as much as possible.
If that checks out, check initial timing advance, as most folks bump it to get more low end. Usually not a problem until you tow something, wear oversized tires, or the engine starts showing its age.
Check the free stuff first!
kyle1175243
90 Bronco 5.0
89 F-150 5.0
88 Mustang 5.0
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