Re: 1998 5.0 explore into a 2002 ranger 4.0
Hmmmm:
PATS. Expo has an extra module behind/above glove box. Will need to get wired in.
Speed signal. 02 Ranger uses the PCM to generate a speed signal from the ABS sensors. The Expo uses the ABS ecu. You can graft in the Expo ABS ecu and g-force sensor, graft in a 4 cyl Ranger GEM, mod the 98 Expo transmission to drive a VSS or Dakota Digital has an ABS to Speed signal box.
A/C -- Very different control logic. In Ranger, the dash switch is wired to the PCM and the PCM has full control if the a/c clutch relay. On the Expo, the dash switch is wired to the a/c clutch relay and the PCM is simply a on/off switch in series with the high and low pressure switches.
Fuel ststem. 02 Ranger uses a 56 psi fuel ststem wirh a pressure regulator in the fuel tank and a fuel return to the FPR coming from the 3rd nipple on fuel filter. Expo uses a 34 psi system with FPR on the fuel injector rail and the return going back to tank from the FPR. The Expo PCM can't handle the higher fuel pressure.
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