I can't find the picture in the service manual, so the first thing I would do is remove the inspection cover from in front of the transmission, and turn the crankshaft by hand while watching the square holes in the flex plate. There are different hole numbers and configurations and you probably have the wrong flex plate. Some of them have four sets of three holes to identify each cylinder, and some have three holes, three holes, three holes, then four holes, as I recall. The set of four holes identifies cylinder number one. You might also do a search for the flex plate part numbers. If they're different between the two years, you're going to have to use the one made for a '98.
The next thing is to remove the crankshaft position sensor to see if it's broken. A new one from the dealer will have a thick paper spacer stuck on the end to set the air gap. You need to install a new spacer when you reinstall those. A lot of aftermarket sensors have a thin plastic rib molded on the end instead. When you reuse one of those you're supposed to cut off the remaining part of the rib, then use a new paper spacer.
The next thing is to see if the automatic shutdown relay is turning on during cranking. Don't go by fuel pressure because the ASD relay is going to turn on for one second after you turn on the ignition switch. The fuel pump will run for that one second so pressure is going to be up. You want to see if that relay turns on again during cranking. The easiest way to do that is to measure the voltage on the feed wire for the ignition coil, any injector, or either small terminal on the back of the alternator. That wire is usually dark green / orange. The Engine Computer turns the ASD relay on when it gets pulses from the crankshaft position sensor and from the camshaft position sensor in the distributor.
If the ASD relay is not turning on during cranking, check for diagnostic fault codes. You might get lucky and one set indicating which sensor signal is missing.
Tuesday, February 25th, 2014 AT 3:13 PM