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No Crank, No Start, ECM problem?


xdelirious45x
06-06-2004, 11:42 AM
Went out this morning, tried to start my 88 k5 blazer, tbi, it kinda had a have crank then nothing. I tried starting it, but nothing. When I put the key to ignition on, ck eng. lite doesn't come on, niether do the oil gauge, battery gauge etc. I checked the battery it was fine. Lights work, interior lights work when i open the door. The annoying beep works when the door is open and the ignition key is put in on.
My ignition coil mounts onto the intake manifold right next to the distributor. I'm thinking its a bad connection between the distributor, ign coil, starter, battery, ecm, fuse.
I checked almost all the fuses possible, ignition, ecm 1&2, crank.
I know there is a pink wire that runs from the ignition coil to the ignition switch. But it doesn't appear to be broken circuit from what i can see.

Could this be bad wiring?

Could this be a bad starter (just purchased a new one but also installed rebuilt heads and a new distributor)?

Could this be Bad timing (Had bad timing in the past)?

Need help quick!!

I just went out and the fasten seat belt light came on, and gauges came on. However, I tried looking for codes as soon as the instrument lights started working again. And the ck engine light did not come on and i did not get the code 12.

Need some help

Jeremy-WI
06-06-2004, 04:12 PM
sounds like an ignition switch problem. Go to www.bulldogsecurity.com and look for wiring diagrams for your vehicle, find what color wires are ign 1 and ign 2, possibly ign 3. With the key on those wires need power, if one doesn't have power it's why it doesn't start

xdelirious45x
06-06-2004, 05:25 PM
The ignition wires are pink. I checked both of those wires and they both connected very well, i double checked.

I think its either an ecm problem or a bad starter because when I tried starting it up again, the gauges didn't come on and the ck eng. light did not come on again. It normally comes on with the key put to into "on."
I also connected the pos. terminal of a battery jumper to the starter solenoid where the wire runs from the battery directly to the solenoid, and i grounded the neg. terminal of the battery jumper to my frame and the starter did not crank or anything. So, I have my old starter and I gonna put that in.
Is there anyway possible that this could be an ignition key cylinder right in the steering column that is disconnected or something??

Jeremy-WI
06-06-2004, 09:36 PM
Well the gages are not ecm related, the check engine light and fuel injectors are. Don't bother putting old starter in until you jump it from the battery cable to the small post on the solenoid(purple wire?). Have you checked the pink wires for voltage with key on? I still think the probable cause is the electrical portion of the ignition switch

broughy84
06-06-2004, 10:18 PM
Don't mean to be a smart ass, but are you sure your battery isn't dead before jumping to conclusions?

xdelirious45x
06-06-2004, 11:55 PM
I tried jumping the battery first, even before I checked the fuses.

I dont have my voltage reader home with me i will probably bring it home tomorrow from work. That was going to be my next step.

broughy84
06-07-2004, 12:35 PM
what about fusbile links?

xdelirious45x
06-07-2004, 11:58 PM
Checked fusible links one by starter, one by ecm and firewall, all fuses at fuse panel. I basically eyed all wires that have to do with the ignition system.

xdelirious45x
06-08-2004, 11:08 AM
Convinced it is ECM or Fuse Panel. All the instruments that hook up to these do not work.
Where are the grounds for these?

xdelirious45x
06-08-2004, 02:57 PM
Ok, With a circuit tester, i found out Left side of my fuses on the fuse panel are working everything else doesn't work???
ECMB
T/L & something else i forgot works....but ignition, ecma, crank, radio, a/c, power, does not work??

The alternator has a plug with two wires running to it, orange and brown. I noticed only the orange wire (which basically connects to the battery) has juice in it but the brown one doesn't?
Should the brown one have juice in it when it's plugged in?

The box mounted on the firewall under the hood has all the wires run to them, i checked and noticed a brown wire runs from the alternator to the box.


Is that where the fuse box gets power?
Where does the power come from in the fuse panel?

xdelirious45x
06-09-2004, 05:50 PM
Ok i found the problem, the two studs that come out of the starter had the problem. I used a circuit tester and noticed that the wire running from the battery had juice in it. The other wire that was on the same stud did not????
Then i checked the other stud and noticed the wire was completely cut?
Im guessing the reason being was that the fusible link and the connector was too close together and it must have ripped open the wire. Anyway, I reconnected both of the wires and use the circuit tester and noticed they now had power running to them. SO I turned the key and she started right up. I was about to junk the truck because it was about 99 degrees out today and I was dead tired after work. But, The power of chevy kept me motivated.

I THANK YOU ALL FOR ALL THE ASSISTANCE.
When I get pics of my animal i'll post them.

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