jkirksey1889

Right, I need to make sure power is going to the coil, to close the relay.... No power to the coil would equal no power going out of the relay. 12 volts I assume?

Raybz

Yes.....low amp +12 signal..... Not 100% sure but I don't think it's a sinking circuit, pretty sure its a sourcing

jkirksey1889

haha, english please?

Raybz

Ya said you are an electrician LOL

Sourcing = sends a +12 signal to activate, other side of coil is at ground
Sinking = sends a ground to activate other pin is at +12 constant

jkirksey1889

Yes I'm an electrician, but sourcing and sinking are not terms I'm familiar with. I understand their meaning as you described it, but the terms themselves are unfamiliar to me.

However, I was gonna check for power going to the coil so I gave it hell down the interstate and back and got it to the point where I was sure it wasn't gonna crank after I shut it off. It cranked right up. That's the FIRST time it has cranked after running it like that.

I'm thinking, maybe, possibly, hopefully, the power wire going to the coil was loose maybe or corroded some or something, and me having taken it off and back on before I left may have made a better connection. Or maybe the connector itself is / was the problem.

Anyway, I think I'm on to something.

Raybz

Just bustin yer ***** a little there brah


Glad you seem to either have it or on the right track

Frank_Ford

regarding your thermostat, you need a 190 degree for your truck to run properly. It should open at between 188 and 195 degrees and fully open you should have an engine temp of between 205 and 215 degrees. If you are running cool, your engine will not run properly and you will burn excessive fuel. At 180, you are not getting up to proper ops temp.

Looks like your starting problem is solved

jkirksey1889

Thanks. I will change to a 190 thermostat.

However, starting problem came back but I have some things to test before I start changing any other parts.

jkirksey1889

Latest update:

Replaced starter solenoid.
Installed 190 degree thermostat.
Replaced fuel filter.
Lost most hair, the rest is thinning quickly.

After running for a while if you turn it off and try to crank it right back up it will not crank.

I have noticed though that it does not take long before you can crank it again... less than 5 minutes and it'll crank fine.

Martian

^^ Hook up a fuel pressure gauge and go through one evolution of what you just described and watch the pressure as you do it, see if it might be low and takes a while to get back up to pressure.