Ignition fuse is blowing when the ignition is turned on

pcm fuse blows instantly ???? What number fuse , how many amps ? Where is it located ? under hood fuse box . ECM fuse 10amp ,underhood fuse box ???? When does the fuse blow ? when you turn the key to the start position . How about when you turn it to just on position ? Replacing the ignition switch an the column ????? Why did you replace these ? You think it was going to fix the problem ? or someother problem ? Bad computer maybe .

what devices are linked to fuse ten and seven ?
have you replaced the relays ?
has any electrical work been done recently ?
what is the amp /volt meter reading to both fuses as the ignition is
turned on ?
the vehicle model or type may help a little

you have a short in that circuit chck your harness for wiring that might be exposed to ground or pinched

Check to see if you are using the proper fuse. If so, disconnect the starter solenoid and then try to start the vehicle. If the fuse does not blow, the starter solenoid (entire starter, actually) should be replaced.

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

Hi, if you have the 4-cylinder, only the PCM and the ignition is on this fuse. If you have the V-6, the camshaft and crankshaft sensors are also on it. What I recommend is to disconnect everything on the fuse except the PCM, and then turn the key on. If the fuse blows, you know your PCM is shorted. If it doesn't blow, reconnect the ignition module and turn the key on again. If the fuse blows, you know the ignition is bad. If not, plug in the sensors one at a time to see which one is shorted. The location of the sensors are shown below, but there are 2 possible locations for the crankshaft sensor. The ignition module is under the coil pack. Please let me know if you have any questions, and thanks for using FixYa.









Ignition module

I'm no expert but when you turn key to run position, this turns the fuel pump on if the pump is faulty i would think it would blow the fuse also. Or its your theory a short in the ignition system wiring.

something connected too ignition sdwitch has short to ground. remove all fuses except 20amp that blows turn on ignition see if blows. if not replace one by one till it does to isolate circuit. which fuse is blowing and where is it located.

woodysmechan [email protected]

Is this fuse 11--10 amp under hood fuse block?
If so, I'd unplug your ignition module. With dis ignition, the coil pack sits on ignition module. The end of ignition module that has two electrical connectors, one is a two wire connector, wire colors pink and black, disconnect it, see if fuse still blows? If it still blows and we're talking about the same fuse, at least you know what isn't causing it to blow. I'm trying to make sure we're on the same page about the fuse, according to my wiring diagram?

Try removing the harness connector to the motor, and see if it still blows the fuse, then you've isolated the problem.