Ecm Test
rockwild
01-13-2005, 04:21 PM
how do i test the ECM the fuel pump is not working and the injector is not injecting
Fractured1
01-13-2005, 04:49 PM
1st have you checked all the fuses and relays...
rockwild
01-13-2005, 04:55 PM
yes i have replaced all!!
BlazerLT
01-14-2005, 02:21 AM
Please supply information.
Year, engine, model
Year, engine, model
rockwild
01-14-2005, 09:14 AM
it is an 84 I started with 1.9 and changed it over to a 4.3 tbi it work great. Then I slung a rod so I am now putting a 4.3 cpi any help would be great thanks!!!
rockwild
01-14-2005, 09:19 AM
tbi came out of a 92 blazer cpi came out of a 94 blazer. I had the whole truck so wires were not a problem
BlazerLT
01-14-2005, 12:05 PM
well, you will need a new fuel pump and the complete wiring harness from the 1994 for this truck to fire up.
you cannot use a TBI pump on a CPI engine.
You need to get a CPI pump.
you cannot use a TBI pump on a CPI engine.
You need to get a CPI pump.
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