G35 Coupe V35 2003 - 07 Discussion about the 1st Generation V35 G35 Coupe

Cam & Crank sensor problem

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Old 02-27-2019, 07:47 PM
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Cam & Crank sensor problem

Changed my cam & crank sensors and now my idle is rough and will eventually stall. Sometimes when slowing down and coming to a stop it will stall. If I drive it at speed it runs fine then once tou take your foot off the gas and come to a stop it will rough idle and die? When first started it will idle 750rpm then jump to 900, then fall to 500 then jump up, you get the picture.

Also when you put the sensor in the engine, the O rings just barely touch the block. Is this normal? Seems like it should go about 1/8 further in

What could it be?
 
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Old 02-27-2019, 08:52 PM
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If you didn't use an OEM or Hitachi sensor then that's probably what's wrong.
 
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Old 02-27-2019, 09:40 PM
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Originally Posted by [email protected] View Post
If you didn't use an OEM or Hitachi sensor then that's probably what's wrong.
know where to get these or specific part numbers?
 
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Old 02-27-2019, 09:53 PM
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OEM angle head 23731-AL61D

OEM straight head 23731-6J90B

Both are superseded by a newer revision that has a metal cap in the end but the previous revision is a lot cheaper and still good for 100k+ miles

Hitachi was the OEM manufacturer for the early revision ones and can be gotten for even cheaper under their self-brand.

I think CPS0008 (angled) and CPS0005 (straight) are the correct part numbers.

Edit : CPS0006 for the crank sensor or OEM 23731-AL60E
 
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Old 02-27-2019, 10:34 PM
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do you think the Hitachi from Rock auto will work?
 
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Old 02-27-2019, 10:54 PM
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Yep, they were the same ones that came factory installed on the G35, they last about 100k before they finally start getting oil inside the sensor and fail. The newer revision with the metal case supposedly doesn't have that issue but they're VERY expensive.
 
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Old 02-28-2019, 06:14 AM
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Originally Posted by [email protected] View Post
Yep, they were the same ones that came factory installed on the G35, they last about 100k before they finally start getting oil inside the sensor and fail. The newer revision with the metal case supposedly doesn't have that issue but they're VERY expensive.
Oh yeah...just paid $108 for mine.
 
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Old 03-03-2019, 09:55 AM
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Could be several things. If the "O" ring is not in the block cavity, the sensor is not all the way in. When the retaining bolt is tightened to the proper torque, the flange of the sensor should sit flat on the head block all around the bore. I had to remove the throttle body to access the driver side sensor. If you did that, did you use a new throttle body gasket and torque the bolts to specification? Did you disturb the throttle body butterfly valve when the throttle body was removed and electrical connector was disconnected? If so, you need to do a throttle body re-learn procedure. If you do a search you can find the procedure, it is posted on this forum somewhere.
 
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Old 03-04-2019, 09:14 AM
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Originally Posted by Mr.GEE View Post
I had to remove the throttle body to access the driver side sensor. If you did that, did you use a new throttle body gasket and torque the bolts to specification? Did you disturb the throttle body butterfly valve when the throttle body was removed and electrical connector was disconnected? If so, you need to do a throttle body re-learn procedure. If you do a search you can find the procedure, it is posted on this forum somewhere.
I just had to do my drivers side camshaft position sensor on Saturday. I was able to get to it from the passenger side without having to take off the throttle body/intake.

Originally Posted by Dan308 View Post
What could it be?
What brand did you use? You should be able to get the first gen Hitachi sensors from Autozone which is where I got mine from. May sound dumb but did you go back and check to make sure everything was buttoned up correctly? Are you throwing a ses light?
 

Last edited by Pumacelled; 03-04-2019 at 09:18 AM.
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Old 03-20-2019, 02:28 AM
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Stock, AT g35 coupe sport package
Had stalling issues in my old 03 AT coupe. Bank 1 passenger side is pretty easy. Bank 2 takes some work I got away without taking off the throttle body.
Crankshaft is located under the drivers side on the left sid elf the transmission. Should be a standard 10
hope that helps.
 
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