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thegoat4
Well-Known Member
- Joined
- Aug 12, 2007
- Messages
- 613
- Vehicle Year
- 1998
- Transmission
- Manual
Every so often my CEL lights up. Always camshaft position circuit fault.
The first time it happened I checked out the mechanical condition of the sensor just to be safe. No play in the shaft, no loose retaining screws, no busted off flag, no timing problem, even cut the oil filter and checked for metal. All kosher. Rechecked several times since.
But checking the sensor, found no problem. Checking the wiring found no problem. I have good continuity from the sensor to the ecu on both wires no matter how much I wiggle them, if its hot, cold, wet, dry, etc. No loose pins in either plug. Everything checks out.
The light always comes on in the same manner. Right when I start up the engine will hesitate for just a fraction of a second, and then go right back to normal. CEL lights up either right then, or a few minutes later, but always after hesitating on startup. Hot start, cold start, no difference.
Sometimes it'll be weeks with no problem. My longest stretch so far is 5 months of nothing. But once it lights up once, it seems to come in waves, and it'll keep coming on for a week or so. I can let it clear on its own, or I can clear it with a reader and it'll stay gone for at least a day.
I threw a sensor at it to see what would happen, no change.
WTF?
The first time it happened I checked out the mechanical condition of the sensor just to be safe. No play in the shaft, no loose retaining screws, no busted off flag, no timing problem, even cut the oil filter and checked for metal. All kosher. Rechecked several times since.
But checking the sensor, found no problem. Checking the wiring found no problem. I have good continuity from the sensor to the ecu on both wires no matter how much I wiggle them, if its hot, cold, wet, dry, etc. No loose pins in either plug. Everything checks out.
The light always comes on in the same manner. Right when I start up the engine will hesitate for just a fraction of a second, and then go right back to normal. CEL lights up either right then, or a few minutes later, but always after hesitating on startup. Hot start, cold start, no difference.
Sometimes it'll be weeks with no problem. My longest stretch so far is 5 months of nothing. But once it lights up once, it seems to come in waves, and it'll keep coming on for a week or so. I can let it clear on its own, or I can clear it with a reader and it'll stay gone for at least a day.
I threw a sensor at it to see what would happen, no change.
WTF?
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