Jumping Tach
Thread Starter
Pro
Joined: May 2008
Posts: 625
Likes: 30
From: Poteau OK
Jumping Tach
Ok. Ive got a 03 vette that seems to have a possessed tach. My first thought is the cam sensor.....u know..the one in the back of the bloody motor...that takes like 2 hours to get to and 3 seconds to change? If im driving down the road and hit a bump sometimes the tach will jump like 1k rpms and then hit zero and stay there until i hit another good bump, and then it might work for a few miles and repeat the process. I can touch the pigtail that goes into the sensor and its in there tight so i dont think its getting a bad connection. Any suggestions? Im hoping this has happened to somebody else and they can tell me how to fix it.
Also if you turn the blower motor for the ac up more then 2 clicks it sounds like a friggin monsoon is going on in the car. Maybe something stuck in the blower wheel? Any ideas there either?
Also if you turn the blower motor for the ac up more then 2 clicks it sounds like a friggin monsoon is going on in the car. Maybe something stuck in the blower wheel? Any ideas there either?
Burning Brakes
Joined: Dec 2003
Posts: 1,066
Likes: 9
From: Eddy Texas
All other gauges working right? Do you have HUD, and does the RPM function on it work correctly? Sounds like a bad connection somewhere. Might need to pull the Inst panel and check for a loose connection there.
Instructor
Joined: Feb 2008
Posts: 114
Likes: 0
From: Bakersfield CA
I dont think the engine would run right if it was the cam sensor. Did you check for codes?
Thread Starter
Pro
Joined: May 2008
Posts: 625
Likes: 30
From: Poteau OK
well i had a cam sensor go bad on my 99 ls1 and the tach quit...car ran fine. now i slapped the dash and it perked back up...so i got to messin around with the wires under the dash while i was drivin and i guess whatever i moved fixed it cuz now its working fine...who knows!? if it happens again ill probably just end up takin the dash off
