ecm a b

which ecm fuse a or b is on the right side in the fuse block becauce the second one keeps blowning any help what dose it run ? :lol:
 
Re: ecm a b

B is on the right. It is the fuel pump. Use a 15A fuse, even if it's marked 10A. You can check fuel pump draw with an amp meter connected between the pump test terminal and the hot junction block, with the key off.

great i was going to try the 15amp just didn't want screw up the emc i messed with oil sending unitit wasn't pinched thats the only thing holding me up the timing is all set. thanks again dave :tup: after looking the fuse block on mine the one on the right said ecm a so i didn't want to put a15 amp in till i know.
 
Re: ecm a b

Walbros need a 15A fuse. Syclone fuse boxes are marked 10A for the ECM positions. If he's been blowing 10s and has a Walbro this just may be it. If it blows 15s, there's something else. But it's still going to be limited to the sender, pump itself, or wiring (connector at tank penetration).

And I edited my post above. ECM B is on the LEFT. Funny, I never really realized that.

so i'm no further just a hand full of bad 10 amp fuses and now starting on 15 amp the problem has got to be under the hood checked connections and wires oil sending unit all new relays new map did have ecm out to do a heater core whats the chance i got a box of 25 bad fuses
 

cloneman315

Active member
Re: ecm a b

did you change the sender?i know its a bitch but it could be the problem,not saying it is.might be a pump going out also.
 
Re: ecm a b

WHICH ONE is blowing? Left or right? 'B' or 'A' ?


If it's right, A, all the above help is useless, as it pertains to B.

Please clarify, and we'll start again. But if it's A, pull the little plug on the alternator and try it.

it would be the one on the right A i know i'm being a pain inthe ass. this all started when i tryed to set the timeing with that said the truck ran great untill i went to check the vac. lines by the dist the 10 amp worked the frist time we talked then set time now back to blowning fuses. i can't thank you enough for your time chuck
 
Re: ecm a b

fhanks but it will have to wait till tomarow i ran out of fuses today 25 10amps 5 15amps iwas thinking it has to be somewhere around that area the egr is unpluged and blocked off . chuck
 
Re: ecm a b

i'm taking a minute to thank all the people that helped me out especially DAVE it was a bad wire on the 02 sencer :tup::tup:
 
Re: ecm a b

Glad you found it. I'm curious: did you look at the O2 sensor because I listed it in the items powered by that fuse, or did you find it on your own?

no i went though your list did everything you said to do. i can't thankyou enough, who knows when i would of found it :tup :now we will see what that smart ass mustang owner down the street has to say he's been driving buy smarting off because my hoods been up
it's time to shut him up thanks again dave.
 
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