However, prior to the 1992 introduction of the all-new 1993 Jeep Grand Cherokee ZJ, the project was cancelled, and the replacement to the Ramcharger would not arrive until the 1998 model year as the Dodge Durango, based on the midsize Dodge Dakota pickup truck. An unnamed " Dodge ZJ" prototype was manufactured that was similar in style to the 1989 Jeep Concept 1, but featured a unique front end with the Dodge "Cross-Hair" front grille, slimmer front headlamps, and unique front and rear bumpers and body side cladding. In the early 1990s, Dodge planned a midsize replacement for the Dodge Ramcharger full-size, truck-based SUV, which had been in production since the late 1970s. Featuring similar styling to the production 1993 Grand Cherokee ZJ, the Concept 1 featured a brown exterior with unique "two-tone" lower accent paint, 'Jeep' lettering on one spoke of each wheel, smoked headlamps and tail lamps, front bumper-mounted fog lamps, minivan-style exterior door handles, and a roof rack that was unique to the Concept 1. Introduced in 1992 for the 1993 model year, development of the ZJ Grand Cherokee started under American Motors Corporation (AMC) as a mid-sized successor to the compact Jeep Cherokee (XJ) intended to replace both it and the aging Jeep Wagoneer (SJ) and was continued after the company was acquired by Chrysler in 1987.Įxport models produced at the plant in Graz, Austria, were given the vehicle designation of "ZG".Ī preproduction version of the Jeep Grand Cherokee ZJ was first shown in 1989 as the Jeep Concept 1. The Jeep Grand Cherokee (ZJ) is the first generation of the Jeep Grand Cherokee sport utility vehicle. The heater valve is a 91-96 version and the coolant pressure bottle is gone.5-speed Aisin AX-15 manual (1993-1995 4.0L) Just for clarity, although this IS a 90 4.0 the cooling system is converted to an open system which is why it looks different. On the reservoir there is one marked "VAC" or "vacuum" which comes into the ball from the SOURCE, the smaller line goes OUT to the various servos, HVAC, Cruise, Disco axle, disco switch, etc.Īfter I post this I'll look more closely at the pics and try to explain them a bit better. Most notably the pink line is for the heater control black line next to it powers the HVAC blend doors. I stuck the vacuum reservoir in the firewall after I snapped a couple of lines on the trail.hadn't cleaned it up on picture day. The cylinder thing in the middle is the Fuel Pressure Regulator, it's got it's own dedicated line and ALSO hooks in to the intake manifold via it's own little brass nipple. The one just below the fat one goes to the intake tube in between the two large emissions hoses (it's an aftermarket CARB approved intake. Another goes to the airbox for the thermostatic control (mines deleted). The big one goes all the way through from the valve cover to the air box.there's 2 ports there, don't know why.only one is hooked up, the two curved ones plug into a double "tower" on the intake manifold and pass through the harness towards the EGR and EGR solenoid. This is the vacuum harness where most of the vac lines for the emissions system all pass through. The other small little elbow goes to the fuel pressure regulator on the fuel rail. This one comes from the CCV in the back of the valve cover and plugs in to the exhaust manifold in front of the throttle body. The tiny one in the middle goes from the MAP sensor to the throttle body. The other 2.far left comes from the CCV.see next pi for where it goes. This is the source vacuum for the HVAC system, cruise control and vac diso axle. The 3/8 line in the middle comes off the intake mainifold and crosses over behind the valve cover. OK, I have some pics from my 90, in no particular order.
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