QuestionRoland I did what you suggested and the engine lite flashed 1 then pause, flashed 2 then pause, flashed 5 then pause, flashed 5 and stopped that was all.tried to start car no go.disconnected battery for five minutes two times no go.checked engine lite 3 more times same results.you mention pairing the numbers would they be 12 and 55 or something else.could you let me know is there a clear wiring diagraham available to show the details of battery and ground test locations thanks Wayne.
AnswerHi Wayne,
Yes you have the fault codes correctly and they mean you indeed disconnected the battery, and "end of code readout".
My '91 electrical manuals have the wiring diagrams (that I described a bit about) and troubleshooting techniques. As I recall you said that you would only get b+ voltage at the coil (the 12V to run the primary coils) for only a second or so. That is stated to be a reason to check the circuits to the cam and crank sensors. As I explained, when either of those signals don't get to the controlled the controller instructs the Autoshutdown relay to open and end the 12V supply to the coils, the fuel pump and the injectors. It is possible however that, for example, the ASD relay is weak and not really getting such a shutdown comand but rather is opening up on it own initiation.
If I have it wrong, and that when you crank for 5 seconds you are either getting no b+ to the plug at the coil, or are getting a full 5 seconds of b+ at that plug then the remediation has to look elsewhere. (Let me know)
I would be pleased to xerox and mail to you the pages from the wiring diagram manual that show the entire circuitry for the engine control system of the 3.3L engine. Give me a mailing address.
Please let me know if I have misunderstood your situation. I would verify that the cam and crank sensors were intalled to the point where they each touched their respective metal surfaces (assuming that they had a paper spacer which evidentally is immediately "sacrificed" when you crank the engine, and thus assures the tip is very close but not in contact with the surface). And also verify that the wires from those sensors to the controller are patent. And finally, it might be worth while replacing the asd relay just in case it is faulty. One would expect based on your observation of spark for a second or so that a code for either the cam or crank sensors would be set, and so its absence makes me suspect the ASD relay is flakey.
Roland
P.S. I may have confounded my memory with another questioner so let me know if I haven't given you the wire codes between the coil and the controller, and I can also give you the wire codes of the ASD, immediately.
