Well, we don't know the year of his car (can't understand why people don't use the signature field, particularly on tech questions).... but we know he has a 2-digit DTC code, so we know he has a 93, 94 or 95 OBD-I. They don't have a CKP sensor, and even if he had one, the crank position sensor is used ONLY for misfire detection, and the Opti signal has no relationship to/connection to the CKP on the OBD-II cars.



It's logical the engine would shut off when that connector is separated..... when the PCM does not see the low res pulse (you would get DTC 16 if this was missing), it shuts down the fuel system, including pump and injectors. So, doesn't really prove anything. But if there is no corrosion or bent prongs, it is probably OK. Did you make a similar inspection of the harness connector to the Opti? That is a more likely place to find a problem, since you had to take it apart to install the Opti.

A DTC 36 should not cause wholesale missing and stumbling.... the actual transition on default to the low res pulse for ignition timing is usually seamless..... maybe a little less power due to increased spark scatter, but I doubt you'd notice it.

Appears there is more than one problem. Something that might cause irregularities in the high res pulse would be a high voltage wire, like the coil wire or a plug wire running too close to the Opti harness, and if that wire was arcing (arc = electric spark; arch = a curved structure..... ), it would cause problems of the magnitude you are seeing.

 

Now everything is making sence.

I have over the top wires which run around the altenator down the front of the block to the opti, which is beside the opti connector. I really think this coil or coil wire is my biggest problem along with the opti.

I'm going to tackle this coil tommorow. and coil wire.

This site trully rules.

 

A new opti has been ordered and is on the way!

 

Well yall

Great news! It was the opti just as stated before.

When I took the old opti off, the back of the opti that connects to the cam shaft just rotated into the housing, instead of spinning.

I'm not sure what happened or what caused it, but I'm glad I fixed it, cause there is nothing wrong with this baby now, except there isn't enought mustangs around to stomp on.

D Moss

doesn't it seem like when your car isn't running right that everyone wants to race you?

 

back from zee dead!!! Just a quick question about this... Could a misaligned opti drive pin cause this?? Or can i just assume my new opti is defective?

Thanks