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91 cherokee... shutoff problems

So... here's how I'm going to fix this.

There are two constant hot wires that run from the big 30amp "Engine Control" fuse in the PDC. One feeds the ECU, and one goes to the smaller 15 amp "Engine Control" fuse. I clipped the feed for the ECU, and will install an inline switch... sort of the same idea as James had, minus the twisting together of wires. :D

For some reason, the ECU is still grounding the ASD relay, fuel pump relay and fuel injectors... I don't know how or why, and I don't care... I'm just going to cut power to the ECU and call it a day. This way I don't lose my radio station presets by cutting all power with a battery switch every time I park it. :D
 
try checking behind the fuse block under the dash for wires melted together. or on the main harness coming in thru the firewall for excessive corrosion. have never seen this issue but have seen melted wires on back of fuse panel cause other ti=hings to stay on. and jeep has had issues with the connector coming in thru the firewall.
 


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