Question about 2000 Chevrolet Blazer

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Ecm fuse blows as soon as you turn on ignition.

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If the fuse blown out when power is applied you have a direct short, check for ecm harness rubbing against any metal brackets. If you do not find a short then you just may have a bad ecm ... But I would think that it is a short look very carefully !

Posted on May 23, 2011

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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

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Yaris cuts out after she blows the #2 fuse (15amp) will not start. No ignition lights once the fuse blows. Car starts once the fuse is replaced but soon blows the fuse again. Is there a known cause


blown fuses are an indication of an overload of the circuit ( failing electrical device --relay or module ) or a dead short in the wiring after the fuse. The problem may be in the ECM area. Run the fault codes to determine if electronic problem

Jan 08, 2015 | Cars & Trucks

1 Answer

MY TAIL LIGHTS AND POWER WINDOWS BLOW A FUSE,AS AS SOON AS I TURN IGNITION ON.What could it be?


replace the tail lamps... one is dead shorting (filliment broken and grounding to the body of the bulb).

Mar 27, 2013 | Cars & Trucks

1 Answer

2003 chevy silverado injector 2 fuse blows when ignition is turned on


You ohmed them but did you check them for continuity to GROUND, to find out if one of them is grounded out ! They normally ground to ecm/pcm not to eng. so check them for short to grd with wire harness unplugged from all injectors and check 1 at a time, If they all show open...no ground then check your power should be pink for chafing or bare short to ground. this will be on Bank 2 you are checking which is the Head that setsfarthest back to firewall. Bank 1 is Head farthest to front towards Radiator.

Dec 26, 2012 | 2000 Chevrolet Silverado 1500

1 Answer

2000 grand prix blows 10 amp ecm fuse as soon as you turn the ignition on


According to the wiring diagram on autozone's website, that fuse only powers the computer. The computer controls several components by grounding them.
It's possible something has shorted out the circuit board inside the computer.
You could unplug the computer and try the fuse again. If it blows there is something in the wiring harness between the computer and the fuse.
On most models the computer is behind the glove box or on the passenger side of the engine compartment.

Jul 18, 2012 | 2000 Pontiac Grand Prix

2 Answers

30amp AM 2 fuse blows as soon you turn on the key & car will not start


This is common about this time on these Camrys. I own three. The AM2 fuse is blowing because a coil, capacitor, or supressor has gone bad in the distributor. To test this disconnect the two wire connectors to the distributor. Replace the AM2 fuse. Turn the ignition. If the fuse doesn't blow. The distributor.

Jul 01, 2012 | 1994 Toyota Camry

2 Answers

I have A 1991 GMC SIERRA, 350,no fuel no spark, have fuel to the tbi, changed coil, ignition module, tested pick up coil good, check engine light comes on with key, fuses good. I'm running out of ideas....


Do you have power to the injectors? One of the wires to the injector will come on for a couple seconds as soon as you turn the key to the on position.The computer controls the ground side. If you do not get power to one of them start looking for an open circuit. The same power source will also go to your ignition coil and ignition module. If you do not have power on the pink wire to the coil apply a temporary fused battery power source to it and give it a try, this will also power up the injectors.
Check it out and let me know.

Oct 29, 2009 | 1991 GMC Sierra

1 Answer

Ikeep blowing the ecm fuse as soon as i turn on the ignition and when i hoo up the positve cable to the battery i get a big spark


CHECK FOR IGNITION WIRES SHORT TO GROUND.I HAVE SEEN A BAD FUEL PUMP BLOW ECM FUSE.REMOVE THE FUEL PUMP FUSE DISABLE FUEL PUMP AND SEE IF FUSE KEEP BLOWING.

Sep 01, 2009 | 1994 Chevrolet Cavalier

1 Answer

Blows 15amp ecm fuse


replace ignition switch

May 29, 2009 | 2005 Toyota Corolla

1 Answer

95 Grandprix will not start. Found the Fuel Injection fuse blown, Unplugged all injectors and fuse still blows. With ECM disconnected the fuse does not blow yet still has power


it will not blow when ECM is disconnected, cause there is no power to the injectors when you disconnect the ECM. When you turn ignition on check for fuel pressure at fuel rail. Release pressure at nipple on fuel rail. If no pressure exists puel pump is shot. If there is pressure your fuel filter might be plugged.

Jan 12, 2009 | 1992 Pontiac Grand Prix

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