Question about GMC S-15

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1985 gmc S15 2.5L ECMB fuse power to ecm blows intermitten

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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ghost4548
  • 776 Answers

SOURCE: 03 hyundai santa fe blows ecm fuses after car is warm up and you

There is obviously a short circuit somewhere. Best solution, take vehicle to nearest Hyundai Service Center, pay diagnostic fee. They will give you an estimate of repairs (parts, labor, tax, time-frame, etc.). This way you'll find out EXACTLY what the problem is and what's required to fix it.

Posted on May 31, 2009

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  • 108 Answers

SOURCE: 93 s-10 blazer keeps blowing ECMB fuse which also

The ECM tells the fuel pump to come on. You can get a circuit breaker from most parts stores, and many stores you can get a repair manual for $20 that will have a schematic in it.

Posted on Jul 12, 2009

centralvalle
  • 386 Answers

SOURCE: ecm fuse keeps blowing

just fixed this problem, change your fuel pump module, fuel sending unit shorts out on fuel level swing arm blue wire... unfortinately you must replace it as unit because of the design, fuel pump and tank guage fuel level sending unit are a one peice item, fuel tank has to come out to change unit, about a $ 700.00 repair too... fuel pump module runs about 350 to 700 $ depending on aftermarket or factory, try to find one with a lifetime warranty even if it is $ 50.00 more worth it..labor is about $ 250 to $ 400 depending on shop labor rate... definate problem though I ahve no doubt, common problem on GM... please rate my help, thanks...

Posted on Aug 06, 2009

SOURCE: ECMB fuse keeps blowing on a 88 S15 pickup. I have

Un plug the Computer to see if the fuse doesnt blow now. You may have a short in the PCM or the harness.

Posted on Aug 31, 2009

dmsr63
  • 2050 Answers

SOURCE: no power to fuel pump and the ecmb fuse bows as soon as i put it

Unplug all wires to the distributor, coil, fuel pum and injectors, then see if the fuse blows, if it does, sounds like an ECM failure.

Posted on Sep 26, 2009

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1 Answer

85 gmc jimmy ecmB fuse keeps blowing


Have you fuel pump checked, as this could be a possible cause.

Sep 02, 2011 | 1985 GMC Jimmy

1 Answer

I would like a diagram for my ecmb fuse for a 1992 s10 blazer 4x4 4.3 litre engine


Hi, the ECM B fuse powers the ECM and the fuel pump. It's hard to say where the ECM power is used, since it appears as a black box in the schematic. The fuse box or owner's manual may indicate circuits that the fuse powers thru the ECM. If you find you need additional diagrams, please let me know and please specify if you have the VIN W (central point injection) or the VIN Z (throttle body injection) engine.

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Apr 09, 2011 | Chevrolet S 10 Cars & Trucks

1 Answer

Will not start and checked fuel pump no power to fuel pump i also have blown fuse for ecmb that blows as soon as i replace it


ECM B fuse supplies a constant 12v hot at all times to the VCM/PCM and to the fuel pump relay. The fuse is blowing telling you that there is a short to ground somewhere. Try this, take the fuel pump relay out and put a new fuse in. If it doesn't blow put the relay back in and if it blows then try a new relay. The relay may be shorted to ground internaly. Other wise you'll have to trace the wires to the VCM and the pump relay to look for a chafed wire that's contacting metal. The wire coming from the ECM B fuse is orange and has a splice in it going to the pump relay and the VCM/PCM.
Hope this helps.....Andrew

Mar 28, 2010 | 1999 Chevrolet S-10 Pickup

2 Answers

Keep blowing the ecmb fuse in my 1991 s-10


check your grounds & the fuel pump connections.the ground should run to the right rear of the motor. look at the wires back to the motor on the frame for anything that may have nicked a wire or a rub thru. You have a short and i belive it shut down if you hit a bump. loose or fraid wire some place. Best of luck & keep us posted on your fix.

Mar 10, 2010 | 2000 GMC Jimmy

1 Answer

No power to fuel pump and the ecmb fuse bows as soon as i put it


Unplug all wires to the distributor, coil, fuel pum and injectors, then see if the fuse blows, if it does, sounds like an ECM failure.

Sep 26, 2009 | 1993 Chevrolet S-10 Blazer

1 Answer

97 chvy 5.0 -ECM B fuse blows - Wont Start - Replaced ALL parts


that red wire is a test lead to jumper the fuel pump to test it.if ecmb fuse keeps blowing my guess is your ecm has a short in it,in that case it can be purchased at oreillys

Mar 28, 2009 | 1997 Chevrolet C1500

1 Answer

Blows fuses


Generally speaking, a fuse 'blows' because too much current is drawn through that circuit. In this case I suspect a 'short-to-ground' or a bad voltage regulator (inside the alternator in a GMC). First, I would check the alternator's output voltage. Easiest just to look at your guage. Up to 14 1/2 volts is normal on a GM (with truck running), if it's higher - you need a new alternator. If it's under 14 1/2 volts, you
MUST find the short. Unless you have the specialized tools, (short-circuit finder, voltmeter, wiring
diagrams, etc.) this should be left to a competent automotive electrical shop. It could be as simple as a wire's insulation worn off or a short 'inside' the ECM (you truck's engine control computer). No matter what, one trip to a competent mechanic will probably be cheaper than continually replacing the computer and/or towing bills. Good luck!

Nov 24, 2008 | 1992 GMC Sonoma

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