98 s10 code p0113 blows ecm 1 fuse

this is only covered in the SERVICE MANUAL
FULLY. CHEBBY S10, 2.08L PICKUP NOT BLASER S10 WITH TB TROTTLEBODY INJECTION CALLED TBI.
OR ONLINE HERE. (MUST PAY)
SEEM THE FUSE FOR INJECTORS IS WRONG ONE TO ME, AND SUPER DANGEROUS LIKE THAT.
fuse ECM1, 10AMP NEVER EVER LARGER !!!!
4 THINGS CAN BLOW THE FUSE THERE AND INCLUDES THE 2 INJECTORS.
LONG IN TOOTH 30YO .
SM BOOK:
https://eautorepair.net/Marketing/Default.asp


2.8l 93 ECM1 FEED.
SHORTED ECM #3
SHORTED AIR SWITCH SOLENOID. #4
ECU SHORTS TOP CAUSE IS BAD CAPS INSIDE
ELECTROLYTIC CAPACITORS. 30YEARS IS END OF LIFE ON THOSE CAPS, i JUST REPLACE THEM
ASK HOW AND WITH WHAT KIND 'Nichicon '" is it.

burning wires+ fuel is never ever good.
use the correct fuse ECM1 never over. amp it.

Several suggestion on links below some different ideas some common.
https://www.cargurus.com/Cars/Discussion-t2311_ds741004
https://www.bing.com/profile/history?FORM=EDGEHS&fsi=1
https://www.2carpros.com/questions/2001-chevrolet-blazer-ecm-fuse-keeps-blowing
https://www.justanswer.com/chevy/7t252-i-m-having-issue-ecm-fuse-blowing-tried.html
https://www.bing.com/profile/history?FORM=EDGEHS&fsi=1



Looking at the owners manual, fuse box diagram starting page 351 or 5-88 the only thing listed for ECM1 is Engine Control Module Injectors
https://my.gm.com/content/dam/gmownercenter/gmna/dynamic/manuals/2003/chevrolet/blazer/2003_chevrolet_blazer_owners.pdf

It has a short to ground possibly in the fuel pump circuit . Check what you can get to of the wiring of the fuel pump for bare insulation . This is ECM1 fuse ?

A blown fuse means there is a fault. The fuse is designed to protect the wiring from damage. If it blows and when you replace it, it works for a while and then blows again, it means there is an intermittent fault. You need to take it to a specialist repairer.

ecm1 is injectors not fuel pump ecm-b is fuel pump its more likely to be a faulty relay for the injectors, it would be a similiar design to this
this is for the fuel system, relay for the injector is nearly the same.

The key is to find out what is causing the ECM fuse to always blow. With just the key on try and see if any codes are set in the ECM. If not, try a new ECM. If the fuse still blows, then disconnect all accessible electrical for everything, including radios, accessories, relay boxes,etc. except the ECM. If the fuse still blows, then probably something wrong with the wiring to the ECM. If it doesn't blow then start hooking up things one at a time until it blows again. Once it blows, that is your problem.

Well you have a short and still have to narrow it down.
How difficult that is depends on what attaches to that fuse.
If it is just the ecm, then disconnect that and see if the fuse still blows?
(if you want to stop wasting fuses, you can just use a test light in its place.
If you have a short, the 12 volt light will be bright. If things are normal, then the 12 volt light will be dim because in series it will only be getting 6 volts.)
If removing the ecm stops the fuses from blowing, then take it in and have it tested.

The first thing you should do is to locate the oil pressure switch/sending unit.

It's a single wire terminal with plastic connect sensor from the engine block.


This switch serves two functions.

1) provide oil pressure reading

2) disable the fuel pump relay in event of oil pressure loss.

===

When this switch is failing to provide the correct pressure to the ECU. The wiring harness can overheat and eventually create a short.

ECM1 fuse blow is because the harness is grounding/shorting.

===

DO NOT drive the truck until you change the oil pressure switch.

After you change the switch,you should spend sometime to inspect the wiring between the fuel pump relay,ECU and fuel pump.


Please post up day on the comment window/page.

I will follow up on it later.


Good luck.

The first thing you should do is to locate the oil pressure switch/sending unit.


This switch serves two functions.

1) provide oil pressure reading

2) disable the fuel pump relay in event of oil pressure loss.

===

When this switch is failing to provide the correct pressure to the ECU. The wiring harness can overheat and eventually create a short.

ECM1 fuse blow is because the harness is grounding/shorting.

===

DO NOT drive the truck until you change the oil pressure switch.

After you change the switch,you should spend sometime to inspect the wiring between the fuel pump relay,ECU and fuel pump.


Please post up day on the comment window/page.

I will follow up on it later.


Good luck.

Sounds like the fuel pump is shorted.