My starter went out about 2 weeks ago and I went to a junk yard and got a starter off of a military Blazer. It cranks really slow, even though I have 2000 CCA form my batters. So today I thought about the starter coming out of a military Blazer and thought that it was a 24 volt starter. So my question is; is there a way to change it to a 12 volt starter, maybe by changing the solenoid?

The only thing you can do is have it rewound if it is indeed a 24 volt. Are you sure it is good? If it was from a junk yard it may be bad. Test it first.

Okay I took the starter out and took it to NAPA. They tested the starter (as 12V) and it works fine. So now I have to figure out why I can only starter the engine when it is cold. I can only start the engine if it has been sitting for about 3 hours (maybe 2.5). Any thoughts?

When NAPA tested the starter, was it under load? Even a 24V starter will spin with 12V but probably won't have any power when under load. The mil Blazer (M1009) definitely needs 24V to the starter. When a vehicle gets hot, the resistance in the windings increases , which may further reduce starter torque output. Better to get a 12V starter in my humble opinion.


Good luck


Jeff

Well I got a new starter, and it works great. http://dieselplace.com/forum/smileys/Clap.gif

I was about to post a suggestion to get a new starter. Junk yard starters have not worked out for me. I buy Nippon-Denzo for my GM and Ford diesels. More money, but I have yet had to replace one.


Last night one of our 7.3s had a bad starter. The only place open was O'Riellys. They had one new of their store brand in stock ($149.00), and one rebuilt Delco ($129.00). The new starter was an import and looked like the original. I went with it. The Delcos seem to last about a year at best for me. The store brand seems to work well, we'll see how it holds up. Mike