ecm-b fuse keeps blowing

mrmohawk · 07-28-2006, 07:19 PM

97 jimmy just replaced motor tranny transfer case about 3 months ago and it ran great but the other day it blew an ecm batery fuse and everytime i replace it as soon as i turn the key on it blows. ive checked the wires behind the dist. but i didnt see anything there and ive replaced the ignition wire to the coil but it still blows hope its not the fuel pump just put it in not to long ago

rlith · 07-31-2006, 07:45 AM

More likely the ignition switch. Common problem on our trucks.

Magic17 · 08-12-2006, 10:03 AM

Quote: Originally Posted by mrmohawk

97 jimmy just replaced motor tranny transfer case about 3 months ago and it ran great but the other day it blew an ecm batery fuse and everytime i replace it as soon as i turn the key on it blows. ive checked the wires behind the dist. but i didnt see anything there and ive replaced the ignition wire to the coil but it still blows hope its not the fuel pump just put it in not to long ago

Check the connector and harness at the fuel pump module for any damage or melting. Also, check and make sure the harness didn't get pinched under the transmission crossmember.

mrmohawk · 08-12-2006, 05:06 PM

Quote: Originally Posted by rlith

More likely the ignition switch. Common problem on our trucks.

i just replaced the ignition switch and problem is still there

07-28-2006, 07:19 PM	#1
mrmohawk Registered User Join Date: Jul 2006 Posts: 12 Location: cny User is: OffLine	ecm-b fuse keeps blowing 97 jimmy just replaced motor tranny transfer case about 3 months ago and it ran great but the other day it blew an ecm batery fuse and everytime i replace it as soon as i turn the key on it blows. ive checked the wires behind the dist. but i didnt see anything there and ive replaced the ignition wire to the coil but it still blows hope its not the fuel pump just put it in not to long ago
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07-31-2006, 07:45 AM	#2
rlith Insane Network Engineer Join Date: Dec 2002 Posts: 5,965 Location: Pittsburgh, PA. User is: OffLine	Re: ecm-b fuse keeps blowing More likely the ignition switch. Common problem on our trucks.
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08-12-2006, 10:03 AM	#3
Magic17 Registered User Join Date: Jul 2006 Posts: 3 Location: User is: OffLine	Re: ecm-b fuse keeps blowing Quote: Originally Posted by mrmohawk 97 jimmy just replaced motor tranny transfer case about 3 months ago and it ran great but the other day it blew an ecm batery fuse and everytime i replace it as soon as i turn the key on it blows. ive checked the wires behind the dist. but i didnt see anything there and ive replaced the ignition wire to the coil but it still blows hope its not the fuel pump just put it in not to long ago Check the connector and harness at the fuel pump module for any damage or melting. Also, check and make sure the harness didn't get pinched under the transmission crossmember.
	[Reply w/Quote]

08-12-2006, 05:06 PM	#4
mrmohawk Registered User Join Date: Jul 2006 Posts: 12 Location: cny User is: OffLine	Re: ecm-b fuse keeps blowing Quote: Originally Posted by rlith More likely the ignition switch. Common problem on our trucks. i just replaced the ignition switch and problem is still there
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