Question about Chevrolet Silverado 1500

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My 1997 chevy k 1500 blows ecm fuse everytime i try ton start it.but i can pull out the fuel pump relay and it wont. is my pump going bad? i can hook up f/p bypass wire and the pump runs! i replaced f/p fuse at first it would run but it got worse till it blows now when you hit the key.

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  • Chevrolet Master
  • 6,826 Answers

Sounds to me more of a wiring problem with a wire too thin or the wire insulation going to ground causing fuse to blow.

Posted on Jan 02, 2011

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Wiring diagram 94 chevy s10


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Sep 03, 2013 | Chevrolet Cars & Trucks

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1997 GMC Sierra, I keep blowing the ECM 1 fuse, I replaced Fuel Pump relay and Fuel Filter. Does the ECM 1 Fuse Pump the Fuel Pump, also disconnected the Fiter turned on the key and no fuel.


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12900_oil_sending_unit_and_fuel_pump_circuit_80-yoo05im5qhid2i2poe1uh03c-5-0.gif this is for the fuel system, relay for the injector is nearly the same.

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1997 Chevy Suburban Changed fuel pump fuel filter relay new battery engine turns over but will not start. Getting spark. Took off fuel lines going in top of engine not pumping fuel. Any suggestions


There is a fuse that deals with the fuel pump circuit through the ECM. If you haven't checked it's in the fuse panel under the hood in the engine compartment on the drivers side by the brake master cylinder. I hope that you have a cover for it with the names of the fuses. The fuse you want to check will be the fuse marked "ECM B". I gave you a picture of the fuse layout but it's not a good one but I did put an arrow to the one I think it is. I pretty sure that's the one but not 100 percent because it's pretty blurry. In any case there is a fuse marked "ECM B". I would check there if you haven't already. Other than that You may have to check your wiring. There is a fuseable link at the starter you may want to check if that fuse isn't blown. I hope this helps and good luck.


clifford224_323.jpg

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1 Answer

97 chvy 5.0 -ECM B fuse blows - Wont Start - Replaced ALL parts


that red wire is a test lead to jumper the fuel pump to test it.if ecmb fuse keeps blowing my guess is your ecm has a short in it,in that case it can be purchased at oreillys

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1 Answer

I have a 97 Dodge Ram 1500 5.2 that wont start


COULD BE A BAD FUEL PUMP EVEN THOUGH ITS NEW, TRY THE FUSES IN THE MAIN FUSE BOX UNDER THE HOOD, ALSO TRY DISCONNECTING THE BATTERY CABLES FOR ABOUT 5 MINS, LASTLY IT MAY BE THE ECM [computer on fire wall]
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Fuel pump and electrical


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Have a 1992 chevy 1500 truck fuel pump works fine when hooked directly to the battery, replaced fuel pump relay, still no power to the fuel pump, engine turns over fine


maybe check the fuse for the injectors...i was being stupid and did this, if that fuse is missing it wont work even if your fuel pump works fine. i think its labeled inj a+b.

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