Tachometer does not Move?

Tiny
JOE1953
  • MEMBER
  • 2007 TOYOTA CAMRY
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 228,000 MILES
Why the tachometer don't move when cranking? What all the cause could be?
Wednesday, September 3rd, 2025 AT 2:45 AM

31 Replies

Tiny
KEN L
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Does it move once the engine has started? If so this is normal.
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Wednesday, September 3rd, 2025 AT 9:42 AM
Tiny
JOE1953
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The engine wants to start crank but no start and no spark.
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Wednesday, September 3rd, 2025 AT 10:25 AM
Tiny
KEN L
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It sounds like the crankshaft sensor has gone bad, here is its location so you can change it out. Check out the images (below). Please let us know what happens.
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Wednesday, September 3rd, 2025 AT 1:29 PM
Tiny
JOE1953
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The reason the tachometer wasn't moving when cranking I forgot to hook the connected backup at the crank sensor. So the tachometer will move now when cranking. So you say the crank sensor bad? How do I check for signal at the crank sensor and the coils from the computer?
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Wednesday, September 3rd, 2025 AT 6:43 PM
Tiny
KEN L
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The best way is to check for the pulse signal at the coil, here is a guide to help:

https://www.2carpros.com/articles/how-to-test-an-ignition-system

Please go over this guide and get back to us.
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Thursday, September 4th, 2025 AT 10:09 AM
Tiny
JOE1953
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I don't know which wire to connect my voltmeter to the coils have 4 wires connected to it. Which one is positive wire and trigger signal wire? Hope to find the problem soon.
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Thursday, September 4th, 2025 AT 11:37 AM
Tiny
KEN L
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There is two wires and a shield wire, use the red and green wires
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Thursday, September 4th, 2025 AT 6:05 PM
Tiny
JOE1953
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The color wires I see is:
1. Light green
2. White-blue/stripe
3. Yellow-black/stripe
4. Tan
can you send me a color wiring diagram on the coils? The color on some of theses are fade.
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Friday, September 5th, 2025 AT 5:20 AM
Tiny
KEN L
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There are only two wires to the sensor, put your volt meter on millivolts and crank the engine over, you should see a pulse.
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Friday, September 5th, 2025 AT 5:57 PM
Tiny
JOE1953
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I use my sensor tester to test the crankshaft position sensor. On my tester it have 4 or 5 red lights on it so when I connect it to the sensor and crank the engine the lights on my tester suppose to blink when cranking but it didn't so I'm not getting a pulse from the crankshaft position sensor.I also check for a pulse at the camshaft sensor with my tester I got a pulse from the cam sensor the lights on my tester was blinking so I belive the crankshaft sensor is bad.
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Sunday, September 7th, 2025 AT 8:56 PM
Tiny
KEN L
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Yep, good job testing it Joe, let me know after toy replace it if it solved the problem.
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Monday, September 8th, 2025 AT 11:03 AM
Tiny
JOE1953
  • MEMBER
  • 813 POSTS
  • 2008 TOYOTA CAMRY
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 300,000 MILES
How do I replace the crankshaft position sensor what all I have to remove out of the way?
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Monday, September 8th, 2025 AT 12:05 PM (Merged)
Tiny
KEN L
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Check out the instructions above.
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Monday, September 8th, 2025 AT 12:06 PM
Tiny
JOE1953
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I took the old crankshaft sensor out and bench test it by connected my sensor tester to it and used a flathead screwdriver and went up and down in front of the part where the magnet is I use the screwdriver as a reluctance wheel and the red lights was blinking on my sensor tester so that mean my old sensor is good and I bought a new sensor and I tested it the same way and lights blinking on my sensor tester so I have't replace the new sensor yet because I believe my old one is good I need a wiring digram for the Ignition coils color wires so I can check for pulse at the coils I don't want to connect to the wrong wire. Do the wires connector run to the PCM? I did check for volts at the 4 connector wires at the coil 2 of them had about 5 volts. Hope to find the problem soon.
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Wednesday, September 10th, 2025 AT 8:36 PM
Tiny
KEN L
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Just so you know, the way you are testing the sensor is not a 100% test, the sensor must be operation to fully test it under load which is done with an oscilloscope.
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Thursday, September 11th, 2025 AT 9:19 AM
Tiny
JOE1953
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Which one of the 4 wires I check for pulse at the Ignition coils wire connector?
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Thursday, September 11th, 2025 AT 10:03 AM
Tiny
KEN L
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Here you go. Check out the images (below)
Image (Click to make bigger)
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Thursday, September 11th, 2025 AT 10:25 AM
Tiny
JOE1953
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Which wire is the signal wire?
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Thursday, September 11th, 2025 AT 12:00 PM
Tiny
KEN L
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I marked them for you, check the image above.
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Thursday, September 11th, 2025 AT 2:18 PM
Tiny
JOE1953
  • MEMBER
  • 813 POSTS
  • 2007 TOYOTA CAMRY
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 300,000 MILES
I tested the crank sensor it is good. Will the Reluctance wheel (ring) cause no spark on all 4 cylinder?
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Tuesday, September 16th, 2025 AT 12:12 PM (Merged)

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