Camshaft replacement?

Tiny
AZDANNO04
  • MEMBER
  • 2008 CHEVROLET COBALT
  • 2.2L
  • 4 CYL
  • 2WD
  • MANUAL
  • 139,455 MILES
My car wouldn’t start after going to two places not far. Check engine light was on scanned it and stated my camshaft sensor.
Sunday, May 28th, 2023 AT 10:59 PM

12 Replies

Tiny
AZDANNO04
  • MEMBER
  • 285 POSTS
Is there more than one Camshaft sensor since the check engine light code said bank 1 sensor? I bought a new sensor. Going to clear the codes from the OBII scanner. What are the relearn procedures after installing the Camshaft sensor I also replaced the Crankshaft positioning sensor as well. When the car wouldn’t start after going to two different places, I scanned using the OBDII the crankshaft code was no longer there but that's when I saw the new code for the camshaft. I purchased with the camshaft a coolant temp sensor since the instrument panel was reading three different temperatures. I didn’t want the vehicle to overheat if it wasn’t going to turn on the fan since it wasn’t getting a proper reading. This all happened after I had put the housing back on to the transmission fixing the leak.
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Monday, May 29th, 2023 AT 5:55 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Hi,

On an inline 4-cylinder engine, there is only one bank, so don't worry about that. However, there are two different camshaft position sensors. One is for the exhaust cam and one is for the intake cam. See pic below

Have you confirmed which one needs to be replaced? If you are not sure, let me know what code you have so I can make that determination for you.

Let me know.

Joe

See pic below.
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Monday, May 29th, 2023 AT 8:21 PM
Tiny
AZDANNO04
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P502 and P0341.
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Tuesday, May 30th, 2023 AT 12:15 AM
Tiny
AZDANNO04
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  • 285 POSTS
P0502.
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Tuesday, May 30th, 2023 AT 12:15 AM
Tiny
AZDANNO04
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A circut Low - speed sensor A circut Range/Performance Bank 1 or single sensor - camshaft position sensor
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Tuesday, May 30th, 2023 AT 12:17 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Hi,

The two codes are not related. The P0341 is related to the intake camshaft position sensor.

DTC P0341
- Intake Camshaft Position (CMP) Sensor Performance

DTC P0502
- Vehicle Speed Sensor (VSS) Circuit Low Voltage

I attached a pic below of the intake camshaft position sensor location. Let me know if this helps.

Take care,

Joe

See pics below.
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Tuesday, May 30th, 2023 AT 9:20 PM
Tiny
AZDANNO04
  • MEMBER
  • 285 POSTS
Yep, on the diagram #7 is what I replaced. But what are the relearn procedures for the crankshaft positioning and camshaft position sensor procedures?
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Tuesday, May 30th, 2023 AT 9:59 PM
Tiny
AZDANNO04
  • MEMBER
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I replaced the speed sensor, and my speedometer hasn’t moved. But at least the car starts... It takes three times to do it.
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Tuesday, May 30th, 2023 AT 10:02 PM
Tiny
AZDANNO04
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But now the car won’t start again but I don’t hear the fuel pump pressurizing. Because of the way it sounded when it tried starting. One to find is I have WD-40 on me, and I can spray it in the throttle body. To see if it starts and if it shuts off then it's the fuel pump.
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Wednesday, May 31st, 2023 AT 4:24 AM
Tiny
AZDANNO04
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Almost started had to keep giving it gas, the only codes from the check engine light are two P0341 both same Camshaft Position Sensor A Circuit Range / Performance Bank 1 or single Sensor $07E8 on one the other has looks like two flags one upright the other upside down next to $07E8.
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Wednesday, May 31st, 2023 AT 5:39 AM
Tiny
AZDANNO04
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I tried removing the negative terminal off the battery for over an hour. That’s when it almost started when I had to give it gas sounded it was struggling getting fuel.
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Wednesday, May 31st, 2023 AT 5:40 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Hi,

Have you checked the fuel pressure? If you are not hearing the pump, that may be the issue. Also, if you have carb cleaner or starting fluid, it would work much better than WD40. I'm not sure if WD40 would work, but anything is possible.

Here is a link that explains how to test fuel pressure:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

You will need a pressure gauge, but most parts stores will lend one to you. Also, I attached the manufacturer's pressure specifications below for you.

Try this and let me know the results.

Take care,

joe

See pic below.
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Wednesday, May 31st, 2023 AT 9:34 PM

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