Ecm fuse blows

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Aug 29, 2019 | 09:47 PM

totop73

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From: bismarck il

Ecm fuse blows

I'm not really new here but have not posted here. I have a problem with the Ecm fuse blowing when I nail it.The motor is a 2002 Ls1 with 4l60e trans.Thanks in advance for your replies.Charlie

Aug 29, 2019 | 09:53 PM

G Atsma

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From: Central Cal.

Could something be physically moving and shorting out the power wire under hard acceleration?

Aug 29, 2019 | 10:15 PM

totop73

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From: bismarck il

I will check that out.I wonder if it could be a bad tps? It runs fine till you nail it then it blows a 10 amp fuse.Thanks

Aug 30, 2019 | 05:58 PM

sowbelle

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Which car? sometimes, under hard acceleration, 98-02 f-bodys without their holddowns on, battery leans back, causing gremlins.
Look for arc spots.

Aug 30, 2019 | 10:35 PM

G Atsma

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From: Central Cal.

Quote:

Originally Posted by sowbelle

Which car? sometimes, under hard acceleration, 98-02 f-bodys without their holddowns on, battery leans back, causing gremlins.
Look for arc spots.

^^^^^^^^^^This. I remember reading something like this a while back in these forums. This post brought that back to me.

Aug 30, 2019 | 11:28 PM

totop73

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From: bismarck il

My car is a 73 Corvette with 2002 Ls1 from a 2002 WS6 Trams Am. I have a 10 amp fuse and the ecm and fuel pump share the same fuse. Going to try a 15 amp fuse.I shook all the harness and nothing happened. Going to find a good road and try it out tomorrow. Will update tomorrow.

Aug 31, 2019 | 12:19 AM

G Atsma

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From: Central Cal.

I would put the ECM and pump on separate fuses. The way it is now you don't know which one could be blowing the fuse.

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Sep 1, 2019 | 10:02 PM

totop73

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From: bismarck il

I was wrong about fuses. There are 3 fuses 1 pcm ingnition 2 fuel pump 3 pcm battery. It runs fine till you stomp on the gas peddle. Do you think the tps sensor could be bad ? Thanks Charlie.

Sep 4, 2019 | 08:51 PM

#10

totop73

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From: bismarck il

I found the problem.A terminal was sticking out of the plastic connector on the mass air flow sensor.It was grounding out on full throttle. Runs fine now no blown fuse.

Sep 4, 2019 | 10:49 PM

#11

CattleAc

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From: Dakota Territory

Quote:

Originally Posted by totop73

I found the problem.A terminal was sticking out of the plastic connector on the mass air flow sensor.It was grounding out on full throttle. Runs fine now no blown fuse.

Thanks, it's always nice when someone comes back on here and posts a fix.