Before you buy a vehicle you should take a few notes on what are some of the common problems with that type of vehicle. In this case I am looking at am early 90′s Jeep Comanche and the problems associated with a large engine. The first thing you need to know is that older Comanches such as one from 1990 to not have a check engine light. This means that the other problems I describe may have to be diagnosed by their symptoms instead of being given a heads up. The valve cover gasket, oil pan gasket and timing cover commonly will develop leaks. This can be a big problem and very expensive. If you are looking at an older Jeep Comanche you may want to steer clear of it if it might need any of these repairs soon. When these get old they also sometimes develop ignition wire failures that could lead to backfiring or a rough start up. If this is happening it is a pretty easy fix and can be done on the cheap if you are handy in the garage and have a Jeep Comanche repair manual. If you don’t have a Jeep Comanche repair manual find a repair manual similar to it. Since this is a larger engine, do not try to use any small engine repair manuals .
Some models from the early 90′s such as the 91 or 92 are also susceptible to failures in the rear main oil seal if the car sits in dirty or dusty conditions. This can be prevented by regularly washing the car, and making sure to clean the underside as well. If you don’t do this, dust and dirt will collect on the oil seal. As the car moves, this will cause abrasion, wearing through the surface of the seal. Usually regular maintenance and keeping this area clean is a hassle, so a plug has been made and is available from MOPAR which can be installed at any time to fix this problem.
The last thing to know is that the head gasket in these early models will bust. This can mean the death of your engine if not taken care of right away. It is easy to take care of this and all you need to do is get it to a mechanic right away. If you are worried about this happening there is a newer head gasket that can be installed.
Tags: Jeep Comanche repair manual, MOPAR, small engine repair manuals
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