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will not crank Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Car Troubleshooting paulrice User Aug 21, 2010, 12:33 PM Post #1 of 3 (1417 views) will not crank Sign In 1997 gmc 1500 pickup 5.7 installed used motor hooked everything up went to crank over motor nothing have lights gauges fuel pump pumps check purple wire at starter no power when turning key to start check fuses with test light all ok butt when i touched the fuse that sayes crank fuse with the key on the truck cranks over Sidom Veteran / Moderator Aug 21, 2010, 10:22 PM Post #2 of 3 (1403 views) Re: will not crank Sign In A test light is a load devise that in some cases can energize a circuit among other unexpected & bad things due to the current flow. The 1st thing I would do would be to try a new fuse...BTDT. (yes even if it looks good & passed the "test light test") After that you'll have to get a wiring diagram of the circuit and you are going to have to trace out the purple trigger wire starting at the ign switch.... Hammer Time Ultimate Carjunky / Moderator Aug 22, 2010, 6:01 AM Post #3 of 3 (1397 views) Re: will not crank Sign In You had to be putting power to that fuse. That circuit is the starter relay trigger wire and will energize the relay when powered. It usually gets power from the ignition switch in start position. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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