No power no start nothing

[Angry_bucktooth]

1988 2.5l 5sp

 

So last week I drive to the store no problem came out and it didn't wanna start I eventually got it to start if I went into reverse it died instantly if I let off the gas for a minute or two it slowly died out. I got it home tested cps and it was weak so I ordered a new one from dealership. I pick it up install it and now when I turn my key the ignition does nothing. All my lights work but none of the gauges move in any position and my radio doesn't turn on almost like they aren't getting power/signal. The day prior it all worked so I read it's usually the ignition switch. Well I get one of those and install it and still nothing.

 

I have been going threw doing cruisers tips also I have cleaned and sized up/added all grounds. I have cleaned the c101. And the coil/icm I'm in the process of cleaning all connectors and testing sensor grounds.

 

So what do the comanche gurus have for answers I'm at a lost

[Angry_bucktooth]

I'm in the process of also replacing the starter motor relay since when I got it to start that day I was moving stuff in that area

[88whitemanche]

I was just a bout to mention to tap it while trying to start it and clean the connections at the battery...

[Angry_bucktooth]

Battery terminals are clean So are inside of the clamps on the terminals as well I have been checking all wires also for any visible signs of damage

[Angry_bucktooth]

Starter motor relay is changed out and still when I turn the key to any position on acc or start nothing happens no noise none of the gauges work. Running out of ideas. Now to be sure on my on smr the bolt it all the eyelets (obvious) the middle spade is for my starter. The bottom right is ground (green wire) and the bottom left is my ignition (black/white wire) correct.

[DirtyComanche]

Check your fuses?  And fuseable links?

[Angry_bucktooth]

All fuses inside are good. The relays are new under the hood. How can I test for power to starter motor relay and what am I looking for for fusible links a picture would be helpful.

[Angry_bucktooth]

Bump

[DirtyComanche]

The fuseable links are the black lumpy things in the wires off the studs on the starter/ignition relay.  If they burn you won't get power farther on down the line.

 

I don't know if that relay is the same a 4.0L one, so I can't tell you which wires hook to what.  You can pull the loom apart and trace the one to the starter solenoid easily enough.  I would probably touch it to the battery hot side and bump the starter over just to confirm that still works.

 

Get yourself a manual and start tracing wires?  Wiring is almost impossible to troubleshoot without being there in person and having a diagram.

[88whitemanche]

Did you check connections at the starter to see if they are loose?

[Angry_bucktooth]

Connections at starter are good. I'm pretty sure I tested the fusible links right used an ohm meter and made sure the meter read 0 when touching both sides of the link I have the relay figured out but still no gauges and radio when I turn the key to any position

[Tbarber16]

Check the ground at the back of the block to the firewall. Mine has similar problems and it ended up that ground strap had broke in half. Just my 2 cents

[Angry_bucktooth]

Replaced it with #3 wire and cleaned connection points day one

[Angry_bucktooth]

So I found out my red ignition wire has no power to it what path does that wire take to get the the relay center