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2000 s10 blazer ECM B fuse

ECM B FUSE blows when turn key on. when remove fuel pump relay and turn key on fuse does not blow. replace relay fuse ok until turn key off or try to crank engine

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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insanegtp
  • 112 Answers

SOURCE: wont start.

I heard of the temp sensor shorting out, depening on engine size if it is a 4.3 it's on the drivers side...

Posted on Jan 26, 2009

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thunderalley
  • 432 Answers

SOURCE: Fuel pump fuse keeps blowing on 99 S10

shorted wiring most likely at the tank

Posted on Oct 04, 2009

jturcotte
  • 8270 Answers

SOURCE: my ecm 1 fuse blows

The diagram below shows everything that runs on that fuse. Check the wiring on these items for a short. If wiring is good, there is a simple way to see which item is shorting out. Unhook all the connectors (don't unhook the VCM) and put a fresh fuse in. Turn the key on--does the fuse still blow? If yes, there is a short in the wiring. If no, the short is in one of the items you unplugged. Now pulg them back one at a time with the key on. Check the fuse after each item until it is burned. Then you will know which part to replace. My first guess would be the coil. Let me know if you can't find any of these or if you have other questions.

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Posted on Dec 07, 2010

  • 118 Answers

SOURCE: car wll not start ECM 20 amp fuse next to fuel

fuel pump is bad. pump motor is shorted.

Posted on Dec 08, 2010

  • 217 Answers

SOURCE: i have a 1990 Chevrolet C2500 Pickup. It keeps

if it is the ecm b fuse thats blowing i would try disconnecting your oil sending unit and see if it still blows the fuse.i have seen the sending unit short out internally before and blow the fuse.if it is the ecm 1 fuse it is either a chaffed wire or one of your injectors shorted.

Posted on Feb 09, 2011

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Jan 06, 2016 | Hyundai Cars & Trucks

1 Answer

ECM 1 fuse keeps blowing on my 94 S10 blazer,,what will cause this problem?


A bad relay or a shorted wire. Pull the relay, turn the ignition on. Fuse pops, bad wire from the ignition switch to the fuse/relay panel. If it doesn't, swap relays in the panel. Turn it on, if the fuse pops, bad wire to the ECM or the ECM has shorted internally. If it doesn't pop, replace the relay.

Jul 30, 2015 | Cars & Trucks

1 Answer

My 2000s10 keep blowing the ecm b fuse when i trun the key on


That fuse ECM B also power's the fuel pump an fuel injectors ! It the under hood fuse / relay box ,pull out the fuel pump relay then put fuse ECM B back in an see if it still blows , You could have a shorted injector or fuel pump or the relay !

Mar 14, 2015 | 2000 Chevrolet S-10

1 Answer

Where is ecm on 95 gmc jimmy


The ECM on the jimmy, is located on the passenger side fender well by the overflow tank. But before replace the ECM, inspect the fuel pump and fuel pump relay. The ECM sends power to the fuel pump relay and if the relay has gone bad will cause the fuse to blow which will kill the the power to the ECM, in turn kill the electrical power to the ignition system.

Start by removing the fuel pump relay and swap it with another relay and see if the fuse will blow again, if is does. Disconnect the fuel sending unit wire harness at the frame and see if the fuse blows again, if the fuse stays good. Chances are your fuel pump has gone bad or the fuel filter is dirty/clogged causing your fuel pump to draw more amp and will need to be replaced or the wire harness from the frame to the sending unit has a short which is common on older Jimmy's.

Here is a link to the electrical harness throughout the Jimmy.
http://www.compnine.com/index.php?t=...lid=6872&uid=1

Mar 06, 2014 | 1988 Mazda B2200

1 Answer

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.


ecm1 is injectors not fuel pump ecm-b is fuel pump its more likely to be a faulty relay for the injectors, it would be a similiar design to this
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.

Nov 03, 2012 | 1995 GMC Sierra C1500

1 Answer

My son has a 2000 gmc sierra.. the truck was running often low on gas and when he recently turned the truck off whenever you attempt to start the truck when u turn the key over it blows the ecm-b fuse. ...


That fuse powers several things, including the fuel pump relay.
You would need to disconnect the harness at the pump and see if the fuse still blows.

Sep 25, 2012 | 2000 GMC Sierra

1 Answer

Why does my efi fuse keeps popping 1999 chevy prizm


Pull the EFI relay, replace the fuse, and see if it blows when you turn the key on. If it does not turn the key off, reinstall the EFI relay and remove the circuit opening relay/fuel pump relay. Turn the key on. If the fuse blows than we know the problem is One of the O2 sensors, the IAC, the purge solenoid, or the ECM You can unplug the O2 sensors, iac, and purge solenoid. Replace the fuse, turn the key on, and plug them in one at a time until the fuse blows. Replace that component. If the fuse blows with those unplugged than its probaly the wiring and possibly the ECM. let me know what you find and I'll help you more if needed.

Aug 05, 2012 | 1999 Chevrolet Prizm

2 Answers

95 chevy blazer keep blowing the ecm fuse


If it "keeps" blowing the ECM fuse, it is because you "KEEP" replacing the fuse without diagnosing and repairing the reason the fuse is blown.

Please review these articles:

Where's The Fuse?

What Else Could Be Wrong?

What To Expect From An Online Car Expert

Jun 04, 2011 | 1995 Chevrolet Blazer

1 Answer

MY 96 SUBURBAN 2500 7.4L SUDDENLY DIED WHILE DRIVING. AFTER I COASTED TO A STOP I TRIED TO RESTARTING BUT NO LUCK. HAVING HAD THE FUEL PUMP REPLACED BEFORE I KNEW TO LISTEN FOR THAT SOUND OF THE PUMP...


The key is to find out what is causing the ECM fuse to always blow. With just the key on try and see if any codes are set in the ECM. If not, try a new ECM. If the fuse still blows, then disconnect all accessible electrical for everything, including radios, accessories, relay boxes,etc. except the ECM. If the fuse still blows, then probably something wrong with the wiring to the ECM. If it doesn't blow then start hooking up things one at a time until it blows again. Once it blows, that is your problem.

Aug 24, 2017 | 1996 Chevrolet Suburban

1 Answer

I have a 2000 grand voyager se. when the ignition key is turned to the on position(no starter engaged) the 20a ign fuse blows. If i remove the fuel pump relay and the associated fuel pump fuse the ignition...


Put the fuses back in,and unplug the fuel pump from the tank,and turn the key on,if it does not blow the fuse,then the pump is the problem.Rate this if it is helpful,thank you.

Jun 12, 2010 | 2000 Chrysler Grand Voyager

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