thermo time switch or CSI for EFI motor is on the front of the intake just bellow to the left of the Throttle Body there are two sensors. Depending on year one will be green and the other should be black, it is the one on the left.
this site has a picture of it near the bottom of the post...
yes you can flat tow put the t-case it N, the trans in N, and make sure that the front hubs are unlocked. no need to remove the front or rear drive shaft. That is what the "N" it the t-case is for.
I have read this alot on fourms with the 2nd gens. I have heard anthing from grimy brake fluid, bad rubber lines, bad calipers, bad master cylinder, and a crumy ABS modudle. In every case it has been something differnet that fixed the problem.
It will all depend on what after market company makes the timing chain. I my self have seen two, one with the colored links and the other marked by dots.
Have you checked you plug wires? The firing order is 1342, NOT 1432.
the "device" that you bypassed in the back that sits on the frame is called a LSPV. It acts as a proportioning valve but works off your suspension. I have read that some times it is the brakes hoses, grimy fluid, bad master cylinder, bad calipers. what ever it is, it's not prevalent to 1st gens...
That was my next question as to where or not the cold start injector was working. As far as the check engine light for it to go out like that I am not to supprized. Mine has done the same thing when some thing was wrong with the engine, the system is only OBD1 it is not as complex as OBD2.