I have a 97 cherokee sport 4.0 auto 4x4 over 200.000. engine quit, It just cranks over but no start. Also I have no working gauges when the key is on. Had it towed to shop. They hooked it to the machine, Said it was the computer. Bought a good used computer at salvage yard. They hooked it up still same thing. No gauges no start. All the fuses have been checked and all work. could it be the crank sensor? If so why no gauges? Thank you for your support. Scottz