Having problems with your 1988 Jeep Cherokee ?
1988 cherokee 4.0 I6 wouldn't start. turns over but doesn't fire. tried it next morning fired right up. Runs fine when going. after it warmed up I shut it off and let it sit for an hour wouldn't start again. I replaced distributor cap and rotor but now doesn't seem to have any spark at all. plugs are good and wires are fairly new.
The biggest roadblock to working on your car is that there is no user friendly computer testing (unless one of the parts stores that do computer scans (free) has the correct scanner for this)You can get a manual with individual volt/ohmeter tests for components. Most common items are ignition control module and crank sensor which are heat sensitive. some, like the coil, make their own heat, not related to engine temp. Crank sensor can shut down spark as can the hall effect setup inside the distributor under the bottom plate. Check everything carefully for loose or corroded connections.\015\012Wish I could give you more, but the disadvantage to doing this is I can't see what you are working with, and knowledge without input for verification makes this really difficult, especially with electrical problems where it's not a how to attach or remove an item question!\015\012Good luck..
It's going to be your ignition control module it should be near your distributor it controls the distributor and sends the fire to it. i would locate it and take it off and have it checked out. most autoparts stores should be able to check it for free.
Repair Help & Product Troubleshooting for 1988 Jeep Cherokee
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