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My 97 TBird LX 4.6 has been running like crap lately, at speed she cuts out for a second or two, the tach drops to zero then she picks up again. This time she threw the following code.

P0320 Ignition/Distributor Engine Speed Input Circuit Malfunction

Sometime she'll stall when I'm idling and won't start, just cranks, after a few minutes of sitting starts right up. I had a similar problem two years ago where she'd die out completely. I replaced the crank sensor and that solved it. Maybe the same again? Maybe a cam sensor? Any thoughts.

Thanks.

tbird100636

Here's a more current definition of P0320- No crank reference signal at PCM.
This is Chrysler's failure condition, your's is similar.
Set Condition: No signal from the crankshaft position sensor is present during engine cranking, and at least 3 camshaft position sensor signals have occurred. More than likely it's a CKP sensor but... in rare cases a bad CMP sensor can cause the 5V or 8V supply to colapse, causing this condition.

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Master ASE Certified L1 Chrysler Technician- still a Ford fan at heart.
1964 Thunderbird Hardtop- Chantily Beige- 390 FE 4V V8-Uncle's Car
1966 Thunderbird Convertible- Red- 390 FE 4V V8- Uncle's other car- waiting for paint and body work!!!
1967 Mustang Convertible- Blue- 289 V8- helping a friend re-assemble this classic