My buddies Regal has us stumped..

The car drove fine and now it will not start. It turns over just won't start.

It has a 41 code (Cam Sensor Circuit)
The new Cam/Crank sensors have been tried
Fuel pressure is good
The injectors pulse
Each individual spark plug was pulled to see if they spark when turned over. They do.
The engine will not start with starter fluid sprayed post the MAF
Tried new MAF and ICMs
Said engine harness seems good/intact

One thing I forgot to tell him to check in the harmonic balancer keyway. He'll check that tomorrow.

Anything else?

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95 SLE... a keeper. 241k miles. Low and Slow.
97 BMW 528i
98 Infiniti vq35'd i30: 13.3@104mph, 30MPG Hwy (RIP)
02 Jag X-type
03 BMW M5
05 Chevy Cobalt LS
07 Infiniti G35s 6MT (Sold)
07 Ducati Monster S2R 800 with DS1000 swap
83 Yamaha IT175K
72 Yamaha DS7: '74 RD250 swap, JL chambers

Info on dropping a 92-99: Here.

Check compression & try another PCM.

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2006 Chevy Monte Carlo SS