Gradinen Posted May 23 Share Posted May 23 Hello, greetings from Sweden. I bought an old Comanche Laredo 88 which has been standing in a shed for 10+ years. I've done some replacements and so forth. Issue at hand: I raplaced ignition coils, spark plugs and took a test run. I parked it in my garage and a couple of days later I tried to start the car and there's no power at all. No power comes to the dashboard, starter or anything. Its completely dead. I've replaced + and - cables from the batteri, changed battery. And when I short the starter the starter runs. I'm not an expert mechanic and can't find the issue. Anyone been through something similar who knows which fuses to check and so forth? I'm terrible at reading electicral schematics but I'll do my best. I got a few tips to check the ignition switch? Link to comment Share on other sites More sharing options...
Ωhm Posted May 23 Share Posted May 23 2.5L or 4.0L? Link to comment Share on other sites More sharing options...
Spinnakerblue89 Posted May 24 Share Posted May 24 As the above poster asks, what motor is in the truck? And you might have better input if you include year, engine, transmission in your sig so we can quick reference your model. And to clarify, are you stating that when you short the starter it itself cranks, but the motor does not turn over? Also, if you have not done so, please take the time to look at Cruiser54's Mostly Renix tips, particularly the grounds and other electrical tips. Link to comment Share on other sites More sharing options...
Gradinen Posted May 24 Author Share Posted May 24 My bad. Its a 4.0L Automatic gearbox. 1988 Laredo. I just got the bright idea to check the Light switch for the headlights. That round pull thing. It worked. But nothing from the ignition switch works. Like radio, panels or windows etc. Link to comment Share on other sites More sharing options...
Ωhm Posted May 24 Share Posted May 24 Using a voltmeter or 12vdc testlight (preferred) check for Battery_Voltage_(B+) on the following pins (use battery_negative terminal for ground): D1_5: B+ (Hot at all times) D1_6: At KEY ON only (B+ (Hot for 2-3 seconds)). During CRANK Hot at all times. D2_4: B+ (Hot during KEY ON and Hot during CRANK). Link to comment Share on other sites More sharing options...
Gradinen Posted Saturday at 02:16 PM Author Share Posted Saturday at 02:16 PM Hai! sorry for late reply, we did as OHM Said. Non of the mentioned were hot or did give any signal. Link to comment Share on other sites More sharing options...
Gradinen Posted Saturday at 06:49 PM Author Share Posted Saturday at 06:49 PM Hai! sorry for late reply, we did as OHM Said. Non of the mentioned were hot or did give any signal. we are tracing every cabel there is now, there is som funky builds in here… Link to comment Share on other sites More sharing options...
Ωhm Posted Saturday at 07:02 PM Share Posted Saturday at 07:02 PM Need to look at your fusible links. Look for open circuits. Fusible links connect to the starter relay at the battery terminal bolt. Link to comment Share on other sites More sharing options...
Gradinen Posted yesterday at 09:01 AM Author Share Posted yesterday at 09:01 AM Found it! The Cable for plus was gone. Might have found one that looked crisp… Now it runs! you truly are a Magician. Are there ”fuses” on the cable from the battery to this box? Or can i just replace it with a plain wire? Thanks again! Link to comment Share on other sites More sharing options...
Ωhm Posted 19 hours ago Share Posted 19 hours ago Cable between battery positive and starter relay is 8-gauge wire, no fuse. Good to hear its up and running. Link to comment Share on other sites More sharing options...
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