#Jeep truck manual#

The proportioning valve is adjusted based on the weight in the bed. This valve has become a matter of massive contention and controversy in the MJ sphere. The Comanche came equipped with a rather unique weight sensing rear brake proportioning valve. The AX-15 was phased in to replace the Peugeot BA-10/5 five-speed that had been used from 1987 until mid-1989 behind the 4.0 L I-6 engine. This is the same Warner transmission used in early to mid-nineties 4Runners with the 3.0 and some 22re 4wd.

#Jeep truck manual#

Aisin provided the AX-4 (four-speed), AX-5 and AX-15 (five-speed overdrive) manual transmissions, along with the AW-4 four-speed automatic that was used beginning in 1987.

(CEL) But if the owner can operate a simple and cheap multimeter, they will find that Renix systems are quite easy to diagnose and keep running.ĭuring the production life of the Comanche, six different transmissions were offered, manufactured by Aisin, Chrysler and Peugeot. Most people won't consider a Renix Comanche, as it has no Check Engine Light. In addition, most parts for the Chrysler systems are easier to come by, even though many Renix parts were borrowed from GM at the time, and are still widely available today and most are surprisingly cheap. One positive effect of this change was that the 4.0 L, 242 CID, I-6 engine gained 17 hp (to 190 hp, having already gained 4 hp in 1988), while the 2.5 L, 150 CID, I4 engine jumped from 117 hp to 130 hp. Other changes under the hood occurred in 1991, when Chrysler adopted their own engine control electronics to replace the original Renix (Renault/ Bendix) systems. The slow-selling turbodiesel was officially dropped at some point during the model year. The new six-cylinder was also more fuel-efficient. For 1987, the 2.8 L V6 (shit motor) was replaced by the new fuel-injected 4.0 L, 242 CID AMC 242 inline-six that delivered 173 hp, 63 more hp than the V6. (you buy this motor in a comache your fucked)Ĭhanges to the engine lineup happened in the truck's second year on the market. In addition, fuel mileage with the V6, particularly in four-wheel drive models, was generally poor. The V6, which was the same basic unit used in the first generation Chevrolet S-10, had 7 hp less than the base four-cylinder, only slightly more torque, and was equipped with a two-barrel carburetor instead of the four-cylinder's electronic TBI fuel injection. The AMC 150 2.5 L, 150 CID I4, The General Motors LR2 2.8 L V6 (shit motor), or The Renault 2.1 L I4 turbo diesel (POS) were all offered from the start. The inaugural 1986 Comanches could be equipped with one of three engines. Jeep offered the Comanche with a selection of engines, including the 4.0 L, 242 CID straight-6 engine found in many Jeeps from 1987-2006. In fact, a Metric Ton Comanche's payload rating is higher than that of many larger pickups. The package included heavier-duty leaf springs and wheels, larger tires and an upgraded rear axle to a Dana 44 instead of a Dana 35, which increases stock payload capacity from 1400 lb to 2205 lb, well above that of any other pickup of the Comanche's size. There is also a heavy duty 'Big Ton' package available (known as the 'Metric Ton' package outside the U.S.) for long-bed models. Modified versions of this same basic suspension system were later used on the Grand Cherokee and the TJ Wrangler.įor the rear suspension, the truck uses leaf springs that are considerably longer than on Cherokees, which give Comanches good load-carrying capacity. A trackbar is used to keep the axle centered under the truck. It was argued that the coil springs allowed for greater ride comfort and axle articulation during off-road excursions. The Cherokee and Comanche were the first Jeeps to use this new 'Quadra-Link' suspension. The Comanche uses the Cherokee's front suspension, with coil springs and upper and lower control arms.

Two such subframes were designed one for the long-bed model, which appeared first, and a second, shorter version for the short-bed, which debuted for 1987.

Jeep designers based its body, styling, and suspension on the Cherokee, which had been introduced for the 1984 model year.ĪMC's Jeep engineering staff designed a subframe that connected to the modified Cherokee unibody structure to support the cargo box. The Comanche is a monocoque (unibody) vehicle, an unusual form of truck design, like the Volkswagen Rabbit pickup and Dodge Rampage.