Ignition switch pics

[Trevor]

Originally Posted by kwren

The only contacts involved are in the ignition switch.

Keith

Keith,

I do not wish to argue or create an issue, but I would not like members to be incorrectly informed, particularly if they are trying to locate the actual high resistance fault.

The inhibitor switch is certainly in the line to the starter solenoid. In many cars the security system interrupt relay contacts are also in the circuit.
However Harvey is wrong in claiming the brake switch is included in the starting circuit.

P.S. I have now found after perusing several wiring diagrams, that there is also a parallel connection to the MPFI control unit, no doubt to sense engine cranking.

All the best, Trevor.

[dcarrb]

Well, for the sake of furthering the discussion, having replaced the ignition switch, what next, if not a relay as illustrated above?

dcb

[kwren]

So what's new? LOL
Thanks for the clarification.
Sorry, I was referring to the only contacts involved to the beginning point of the 8+ Volts. But I should have said it differently. (I knew what I was thinking!)
This voltage drop at the ignition switch absolutely blows my mind, totally

Trevor, could it be caused by a erratic malfunctioning diode?

Cheers,
Keith

Originally Posted by kwren

even though it sure acts like bad contacts!
In my case I replaced the ignition switch with a new one and did not change my inability to get the engine to turn over. The only contacts involved are in the ignition switch. In my case a new ignition switch.
My goal is the help people and if it happens, I am a happy camper.

Take care,
Keith

[Trevor]

Originally Posted by kwren

So what's new? LOL
Thanks for the clarification.
Sorry, I was referring to the only contacts involved to the beginning point of the 8+ Volts. But I should have said it differently. (I knew what I was thinking!)
This voltage drop at the ignition switch absolutely blows my mind, totally

Trevor, could it be caused by a erratic malfunctioning diode?

Cheers,
Keith

Smart of you to think of the diode Keith. This had also occurred to me, but I rejected it as being a long shot. I would presume the circuit blocked by the diode, is a safety measure to inhibit cruise control before starting. When the start inhibitor circuit is completed in park, the diode would provide a ground via the starter to a sensing circuit in the cruise control unit, to unlatch the cruise supply if cruise is turned on. The diode blocks a positive signal when the starter is operated.

A faulty diode either open, the most likely fault, or shorted would affect the cruise control safety function. Only a shorted diode which is unlikely, could impose a load on the start circuit via the inhibitor relay and is likely to also cause cruise problems. Not likely, as was my judgement, but stranger things have happened.

[DansSVXBlues]

I too have to jump back in here and tip the bill of the cap to Kuoh for the great pics and description of steps to change out that !#@$!@ ignition switch. I lived with this problem for YEARS!!! I could hear what appeared to be the solenoid clicking each time I tried to start my SVX followed by the dash and indicator lights dimming if I held it. Had 2 different dealerships change my alternator and my starter plus advise me to replace the battery and of course none of those things solved the problem.

After Googling and finding his post, I tore that puppy apart myself and tonight, with the help of (2) #8-1.25 allen head screws to replace the security bolts I had to drill out, put in a new ignition switch. Just like MAGIC the intermittent starting problem that was gradually getting worse and worse was gone.

Thank You, Thank You, Thank You and Hallelujah!!!

Now I can finally get back to enjoying the ride of my '94 SVX again.

Thanks Kuoh!

Dan's SVX (not so) Blues

[ScottyB]

So, I need to replace my ignition. Does anyone know where the pictures in this thread are? They would be very helpful, Thanks

[redlightningsvx]

I would take the new ignition to a locksmith and have them recode it so you can use your old key.

[BoxerFanatic]

can you not just replace the electrical switch, without replacing the lock tumbler section?

I recently re-keyed my motorcycle, and it was possible there, and that is pretty tight confines.

[Tim]

Bump --- anyone have a copy of these pics?