My 99 suburban Ecm-1 fuse keep blowing

mickgrif
0

Asked by mickgrif May 18, 2010 at 09:11 AM about the 1999 Chevrolet C/K 1500

Question type: Maintenance & Repair

7 Answers

Danny Wang
3,175

you may have a possible short on the wire supplying power to the ECM or any actuators and/or its circuit that is short and feeds on power through the ECM-1 fuse. When does the fuse blow? for instance when you initially turn the ignition switch to on, or during cranking or while the engine has already starting and running.

32 out of 32 people think this is helpful.
edullman
100

i have a 97 suburban that on vacation i blew 2 ecm fuses(while driving) and when i reached destination i hit a speed bump and everything went out, not the fuse, would not restart after that....the camshaft position sensor and the pickup coil have been replaced but still not starting

10 out of 10 people think this is helpful.
97Z714x4
120

having the same problem it happens when I turn the ingnition on, no starting needed

12 out of 12 people think this is helpful.
cab3143
290

I am having the same problem with my 99 gmc suburban. As soon i turn the ignition switch the fuse blows. I dont even have time to try to crank my sub. just have to turn it enough to on and the fuse blows every time. Any suggestions?

29 out of 29 people think this is helpful.
Jamie Groeneweg
530

mmmmmm try checking all grounds are tight and clean. Try auto zone or a haynes manual and see if there is any info on injector resistance, and coil/ dist resistances etc.. some sesnor is probalby drawing way to much! Also check the wireing for shorts especially where is passes through tight spaces and were it is close to moving parts or exhaust. I wouls suspect that it may have blown your computer? Good luck

2 out of 2 people think this is helpful.
jco
175

ecm power wires on passenger side of engine ground out to the exhaust, pull awasy, and check for damage, my 97 kept popping fuses, and this fixed it

12 out of 12 people think this is helpful.
Bumpy9988
290

I have a 2002 tahoe. Blew the ecm1 fuse. I replaced it it started right up. Untill I put it in drive then it blew the fuse again. It did this about 5 times. Then it started blowing the fuse as soon as I turned on the key. I tried about 20 fuses it kept doing it. So I left it for the night went back in the morning and put a fuse in it started right up and has been good for two days. I am planing a long trip and don't trust it. Any ideas where to start. To find what the problem might have been. Thanks

29 out of 29 people think this is helpful.

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