My CUCV keeps blowing Starter Relay???

[erniemigi]

after reading all these post i found one thing that wasn't mentioned but i figured i would ask, could the ignition switch be shorting out, i'm not that good with electrical trouble shooting but i figured i throw that out there and see if it could be causing the problem

 

[86 K5 Blaz]

If I converted my system back to 12V, would I need the relay? Is the switched 12V enough to power the solenoid? This seems like it could be a stupid question, I only ask because I don't recall most vehicles having a relay for the starter.

 

[lindyp38]

after reading all these post i found one thing that wasn't mentioned but i figured i would ask, could the ignition switch be shorting out, i'm not that good with electrical trouble shooting but i figured i throw that out there and see if it could be causing the problem

i think that might be my problem.....what is napa number for switch...?

 

[Zero_cool]

1984 k30/AKA m1028 ignition swith NAPPA part #MPE KS6623SB

 

[wired1000]

Did you guys do the Doghead Starter Relay Mod? As stated in the CUCV Wiki, the Starter relay is a notorious weak point of the CUCV's, and the Doghead starter relay mod should be taken care of ASAP. It takes about 15 minutes and the relay is pretty cheap. A lot of people on this site have burned out their starters because the relay failed. Save yourself some time and money and do the Doghead Mod!!!

Here's the link: http://www.steelsoldiers.com/cucv/60960-doghead-starter-relay-modifcation.html

 

[lindyp38]

yes..i did that almost immediately after getting the truck last yr........it took me about 40minutes to do......

 

[Sajer]

After doing the starter relay fix my CUCV still would not start. So I jumped the Red and Purple wires off the relay and she fired right up. I can only assume it must be the iginition switch. Glad it wasnt the starter as I just replaced that last summer.

 

[HikerMan]

Check your fuses in the fuse box and the fusible links near your Glow plug relay. I had the same problem where everything worked in RUN but when I turned the key to START, nothing happened except smoke from under the hood.

Turns our the guy before me, with the old crappy relay, had busted the relay and popped a fuse (very bottom right of fuse box 30 amp fuse), and then bypassed the starter relay circuit with a push button starter, and remove the fuse leaving nothing there. After doing the doghead mod and an ignition switch replacement, I was still running all that current through the fusible links rather than the fusible links and the fuse, so the fusible links melted. Replaced that section of fusible link, popped in a new 30 fuse, and my truck cranked right up after sitting for a month of confusion and being out of town

Good luck, this may not be the issue but at least its another thing to rule out!

 

[lindyp38]

i just had a 10a fuse blow......i replaced that........

 

[black06]

Just tried firing my M1008 with fresh batteries after sitting for 8 months and had the same issue. Went through me normal routine of cooking the glowplugs and turning the key. The starter cranked slower than normal for a few revolutions and suddenly started spinning faster. I let off the key and went to restart and nothing happened. Checked all the wiring and came to the conclusion that the starter relay under the dash is weak because the starter engaged the flexplate when I jumped out the harness at the relay plug. This truck has always started for me until today.

 

[pbrstreetgang]

I am dealing with this now
My truck is now just clicking at the starter relay under the dash
Replaced solenoid today, still clicking
Batteries show 12 volts
Doghead done 2 months ago
????

 

[MT4222]

I am having the same problem mentioned above. I am lost as what to do.

 

[ReubenJames]

Same issue..twice in the last couple of months. Check your grounds..That seemed to have fix my problems so far. You can use a heavy set of battery jumper cables to ground the starter to verify it this is the problem. Clean your electrical contacts on the starter and buss bar too. Good Luck it can be very frustrating.

 

[MarcusOReallyus]

When electrical stuff is doing weird things, check your grounds.

It's not always the problem, but if your grounds create a problem, it's usually a weird problem.