Question about 1987 Chevrolet S-10 Pickup

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Wont start. ive replaced the fuel pump and the pump relays and it blows the ecm fuse every time i try to start it.

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I heard of the temp sensor shorting out, depening on engine size if it is a 4.3 it's on the drivers side...

Posted on Jan 26, 2009

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1 Answer

My 2000s10 keep blowing the ecm b fuse when i trun the key on


That fuse ECM B also power's the fuel pump an fuel injectors ! It the under hood fuse / relay box ,pull out the fuel pump relay then put fuse ECM B back in an see if it still blows , You could have a shorted injector or fuel pump or the relay !

Mar 14, 2015 | 2000 Chevrolet S-10

1 Answer

Where is ecm on 95 gmc jimmy


The ECM on the jimmy, is located on the passenger side fender well by the overflow tank. But before replace the ECM, inspect the fuel pump and fuel pump relay. The ECM sends power to the fuel pump relay and if the relay has gone bad will cause the fuse to blow which will kill the the power to the ECM, in turn kill the electrical power to the ignition system.

Start by removing the fuel pump relay and swap it with another relay and see if the fuse will blow again, if is does. Disconnect the fuel sending unit wire harness at the frame and see if the fuse blows again, if the fuse stays good. Chances are your fuel pump has gone bad or the fuel filter is dirty/clogged causing your fuel pump to draw more amp and will need to be replaced or the wire harness from the frame to the sending unit has a short which is common on older Jimmy's.

Here is a link to the electrical harness throughout the Jimmy.
http://www.compnine.com/index.php?t=...lid=6872&uid=1

Mar 06, 2014 | 1988 Mazda B2200

1 Answer

Replaced fuel pump on 96 cutlass supreme and still wont turn over


Fuel pump power starts at the ECM/Batt fuse in the underwood fuse block. From there it goes the the fuel pump relay and then to the fuel pump. If you pull the fuel pump relay one pin should have power all the time. This is power from the ECM/BATT fuse. Two of the pins should be grounded. The last pin is power from the ECM. it hold have power for 3-5 seconds hen the key Is turned on and anytime the engine is cranking. Find out what is going on at the relay and then we'll have a better idea of what direction to proceed. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!

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1998 k1500 5.7L ecm-I fuse blows and wont start


Sounds to me its time to replace your ecm

Apr 04, 2010 | 1998 GMC Sierra

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

1 Answer

92 geo tracker wont start replaced gas pump fuel injector relays i can soray starter fluid in the carb and it will start right up but wont run


CHECK FUEL PUMP FUSE.AND CHECK IGNITION TIMING ALSO SCAN IT TO MAKE PCM IS GOOD.FUEL PUMP WONT TURN ON IF PCM OR ECM FAULTY.

Mar 17, 2010 | 1992 Geo Tracker

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

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No Fuel 2001 Kia Sportage


dosee a KIA Sportage have fule pump reset and if so were is it ?

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