Who has had to replace their Cam. position sensor?
Thread Starter
Burning Brakes
Joined: Oct 2004
Posts: 792
Likes: 19
From: ME
Who has had to replace their Cam. position sensor?
Just wondering who has had to replace their camshaft position sensor? How unreliable are those? I'm still trying to figure out why my car cranks longer than normal after it sits over night or at work for the day. I did a fuel pressure drop test yesterday and found that after 5 hours, the fuel pressure was 30 psi, and immediately when I turn the key on it goes to 55 as it should and fires up. C4C5 said on the Corvettemechanic website that it may be a bad camshaft position sensor... This is getting annoying for me.
Fuel pump check valve or cam position sensor? No PCM codes at all.
Fuel pump check valve or cam position sensor? No PCM codes at all.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
If the PCM is having issues reading or receiving CAM Sensor data, you would have DTC for that sensor.
Have you checked and cleaned your grounds??? Remember,,,thats FREE and can have a significant effect on how your car runs. I recommend doing that first. Heres my sticky on grounds. Hope it helps:
http://forums.corvetteforum.com/showthread.php?t=896875
BC
Have you checked and cleaned your grounds??? Remember,,,thats FREE and can have a significant effect on how your car runs. I recommend doing that first. Heres my sticky on grounds. Hope it helps:
http://forums.corvetteforum.com/showthread.php?t=896875
BC
Instructor
Joined: Oct 2002
Posts: 178
Likes: 0
From: Palm Coast Fl
I had to replace mine on the '02 Z06 @ about 2000 mi's and now @ 4000 mi's I'm ving the same code.
Someone told me they thought the problem might be the cam locking bolt as they've never seen a bad can position sensor go bad!
Anyone else with this problem???
Someone told me they thought the problem might be the cam locking bolt as they've never seen a bad can position sensor go bad!
Anyone else with this problem???
Pro
Joined: Jul 2000
Posts: 590
Likes: 1
From: Suffolk New York
I used the excuse to check the cam bolts to replace my cam. Turned out it was the sensor after all! I had about 50k miles on that sensor, so yes the least expensive remedy is first change the sensor, ( don't drive too much just in case it is the cam gear bolts!) if that doesn't cure the code then check the cam gear bolts and change your cam while you're in there!
Ooo just realized this is an old thread, sorry!
Last edited by cam99; Nov 6, 2007 at 10:35 AM.
Tech Contributor
Joined: Jan 2007
Posts: 19,471
Likes: 1,171
From: Dyer, IN
Just wondering who has had to replace their camshaft position sensor? How unreliable are those? I'm still trying to figure out why my car cranks longer than normal after it sits over night or at work for the day. I did a fuel pressure drop test yesterday and found that after 5 hours, the fuel pressure was 30 psi, and immediately when I turn the key on it goes to 55 as it should and fires up. C4C5 said on the Corvettemechanic website that it may be a bad camshaft position sensor... This is getting annoying for me.
Fuel pump check valve or cam position sensor? No PCM codes at all.
Fuel pump check valve or cam position sensor? No PCM codes at all.
Racer
Joined: Jun 2005
Posts: 333
Likes: 1
From: Mendota Heights MN
I just had the fuel feed pipe replaced for a hard starting issue. Apparently there is a check valve in the pipe that can stick partially open, resulting in symptoms similar to what you describe. Not sure where in the system it is located (dealer replaced under GMPP), but understand this to be not an uncommon problem.
