Knock sensor location

Tiny
KODIAK1STEVE
  • MEMBER
  • 1994 TOYOTA PICKUP
  • 4 CYL
  • 4WD
  • MANUAL
  • 20,800 MILES
I cannot find the knock sensor, I have a manual from Haynes and it gives no test procedure or location. I read the codes and knock sensor has came up. Does anyone know how to find it or test it?
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Saturday, December 29th, 2007 AT 3:06 PM

18 Replies

Tiny
FAIRRACING31
  • MEMBER
Passenger side, upper engine area, below center of intake manifold, mounted in block.

To Test:
1. Remove knock sensor
2. Using an ohmmeter, check that there is no continuity between the terminal and the body. If there is continuity replace the sensor.
Location of knock sensor


http://www.2carpros.com/forum/automotive_pictures/103836_toy2_2.jpg


To test knock sensor


http://www.2carpros.com/forum/automotive_pictures/103836_toy1_2.jpg


Knock Sensor


http://www.2carpros.com/forum/automotive_pictures/103836_knock_1.jpg


Hope this help's, have a GREAT New Year's :D
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Saturday, December 29th, 2007 AT 11:51 PM
Tiny
OCEANVIEW
  • MEMBER
  • 1990 TOYOTA PICKUP
  • 300,000 MILES
Where is my knock sensor located on my 1990 toyota SR5 pickup. I need to replace my knock sensor is it hard top do it wont pass inspection check light comes on. First the code 032 came up for the mass airflow sensor. I replaced that now the check light still comes on and its reading 052 for the knock sensor.
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Monday, October 8th, 2018 AT 12:59 PM (Merged)
Tiny
DOCFIXIT
  • EXPERT
Hello,

The knock sensor is located under the intake manifold on the engine block. Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Monday, October 8th, 2018 AT 12:59 PM (Merged)
Tiny
DAVE STANSELL
  • MEMBER
  • 1993 TOYOTA PICKUP
  • 150,000 MILES
How do I replace the knock sensor on this vehicle and where is it located
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Monday, October 8th, 2018 AT 12:59 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
Checked Mit1 nothing for the 22R 4 cyl or 3VG-E 6cyl KS is not use.

What make you thing its the KS -what exact code was pull out of the computer
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Monday, October 8th, 2018 AT 12:59 PM (Merged)
Tiny
WILLEM
  • MEMBER
  • 1993 TOYOTA PICKUPTOYOTA PICKUP
Where is the Knock sensor located on my 1994 Toyota Pick Up engine 22R-E?
2 WD Auto Trans.

Thanks.
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Monday, October 8th, 2018 AT 1:00 PM (Merged)
Tiny
FAIRRACING31
  • MEMBER
Passenger side, upper engine area, below center of intake manifold mounted in engine block.
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Monday, October 8th, 2018 AT 1:00 PM (Merged)
Tiny
PCMENTOR29
  • MEMBER
  • 1985 TOYOTA PICKUP
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 75,000 MILES
Hi here is a knock sensor test I found in a manual:
1985-88 22R-E(T)
1. Warm-up engine to normal operating temperature.
2. Attach a timing light with advance indicator and a tachometer. Locate the Knock Control Sensor, (on the engine block), and ensure that the connector is secure.
See: LocationsSee Computer and Control, Knock Sensor, Location, Harness.
Fig. 210 Tachometer Hook-up

3. While operating the engine at 2,000 rpm, check the ignition spark advance and calibrate the timing mark to 0 TDC.
4. Using a wrench or small hammer, tap the exhaust manifold and observe the timing marks.
5. The ignition timing mark should move in the retard direction, depending on the intensity and speed of the tapping.
6. If the timing mark does not retard, turn the engine off and check the wiring between the Knock Control Sensor and the ECU.
7. If no problems are found, replace the Knock Control Sensor and repeat test procedure.
8. If timing still does not retard, replace the ECU.
9. Disconnect timing light and tachometer from the engine.

I did this test and could not get a responding retard spike. I noticed my advance on my timing light was around 40 deg to make it show at 0 deg on pulley. This was at 2000 rpm. This Toyota 22re runs a little uneven at idle(jumps from 750 to 740 to 760 rpm) and won't pass idle smog check. I have replaced the TPS in the past. My main interest is why does the timing not jump and if it doesn't why is there not a 12 code in the computer? What is the computer expecting to see from the knock sensor? Thanks
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Monday, October 8th, 2018 AT 1:00 PM (Merged)
Tiny
HMAC300
  • EXPERT
If you get spark knock or any knocking noise the sensor sends a signal to the computer and the computer will retard the spark that is what it does. Your problem is probably something else. Check fuel pressure with a gauge auto parts rent it.
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Monday, October 8th, 2018 AT 1:00 PM (Merged)
Tiny
PCMENTOR29
  • MEMBER
Thanks, so all the knock sensor does is retard timing, no A/F mixture?
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Monday, October 8th, 2018 AT 1:00 PM (Merged)
Tiny
HMAC300
  • EXPERT
It does what I said it does
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Monday, October 8th, 2018 AT 1:00 PM (Merged)
Tiny
PCMENTOR29
  • MEMBER
I rented a Fuel pressure tool and will tackle Friday. Thanks.
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Monday, October 8th, 2018 AT 1:00 PM (Merged)
Tiny
PCMENTOR29
  • MEMBER
OK the fuel pressure is as stated in manual. 38.0 psi not running, 37.0 psi running no vacuum on regulator, 30.0 psi regulator with vacuum, and 35.0 psi after shut off for 5 minutes. I adjusted the valves because they were too tight and could not set idle a few months ago. I am using a heated O2 sensor on suggestion of LC engineering the maker of my headers. Plugs and wires, cap and rotor have less than 2500 miles on them. What could be causing the uneven idle which I believe is over rich? Thanks
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Monday, October 8th, 2018 AT 1:00 PM (Merged)
Tiny
HMAC300
  • EXPERT
What else is on engine besides headers? Has it been modified at all? Check for a vacuum leak.
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Monday, October 8th, 2018 AT 1:00 PM (Merged)
Tiny
PCMENTOR29
  • MEMBER
Only headers and a K&N drop in air filter. Completely stock otherwise. What the way to check vacuum leaks? That works? Spraying carb cleaner on hoses and gaskets I can never when the engine surges. I haven't tried with tach connected. How much of an rpm surge should I look for? Thanks
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Monday, October 8th, 2018 AT 1:00 PM (Merged)
Tiny
HMAC300
  • EXPERT
Ok clean your maf sensor, K&N filters with their nice oil are sometimes have to much oil on them screw u p the sensors in the vehicle. Other than that I have no further comments.
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Monday, October 8th, 2018 AT 1:00 PM (Merged)
Tiny
PCMENTOR29
  • MEMBER
Can other experts still see my question or do I have to ask again in order to get more answers? Thanks
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Monday, October 8th, 2018 AT 1:00 PM (Merged)
Tiny
HMAC300
  • EXPERT
Repost your questionbut make sure to give all details so often people don't
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Monday, October 8th, 2018 AT 1:00 PM (Merged)

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