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Well I have had my shut off solenoid fall off before (the 2 bolts vibrated out and so did the solenoid) and the insides fell out. I pu them back on and put on new bolts with lock washers and locktite. It was good for a long while.
Recently it seems like my truck just idles too low and if it is in neutral it will usually stay alive and idle fine (unless you hammer on it and then let off real quick). But when I am driving and hit the breaks at low speeds it will stall out or even leaving a stop.
The shut off solenoid also seems to be pretty hot (not sure if it is normally hot or what). If I unplug the solenoid I get nothing at all.
Also if I give it just the slightest bit of gas it will idle perfectly.
and I have no loss of power.
I am stumped. Does anyone know what my issue might be? My only guess would be the solenoid.
The shutoff solenoid consists of 2 coils. A high amp 'pull' coil which is energized via relay on the firewall when the starter is engaged and a low amp 'hold' coil which is energized via relay on the firewall when the key is in the run position.
The soilenoid shouldnt get smoking hot during use. That is a sign of sticking starter contacts or the relay is sticking and keeping the pull coil energized. This can be verified by use of a multimeter on the coil wires. If it is indeed keeping both coils energized during operation try to get it fixed ASAP, keeping the pull coil energized too long will cause extreme heat buildup and ultimately the failure of an extremely overpriced part! (the solenoid)
2015 3500 laramie dually. 6.7, aisin, 4.10s, bone stock... (for now )
2014 forest river XLR 395amp, 42.5ft of truck killing, wind catching, toy and booze hauling, fun...
Well I was laying on the starter now and again when I was working on it so that might have been why the solenoid was getting hot.
So what your saying then is there are really two solenoids in one there? 1 to open the normal operating fuel path, and another to open a greater path for starting?
Well I am going to check out the solenoid getting hot more tomorrow.
I am also going to adjust the idle a bit higher but I still think it is weird that it all of a sudden just decided to start dieing when I was breaking at low speed or stopped, and it wont start without me givin it a little gas...
Anyone have any other ideas on what it could be?
oh and one last thing. I just cranked the star pretty high today and found a BIG low end difference. I have my boost set to 37.5psi, should I slide the fuel plate forward tomorrow too? Are doing those two things safe and wont KILL my mileage?
one part of the solenoid moves the plunger the other just holds the plunger all the way up.
check to see if the boot on the bottom is still in one one piece.
then turn the key on and just bump the starter and leave the key in the run position. check the solenoid it should be pulled all the way up. if its not pull it up till it holds and go and start the truck. if it starts better the solenoid or wiring is probably at fault for the hard start. Mine acted up and it was just a bad battery connection. cleaned all the small wires on the drivers side up and replaced the ends. it has been fine sinse.
If yer gettin 37.5 lbs boost im thinking yer fuel is pretty well cranked up now.
When they say adjusting the idle doesn't take much they mean it. I adjusted mine yesterday and 2 flats on the bolt was all I needed to go from hard starting to starting perfectly with no pedal. It increased the RPM by about 100-150 with less than 1.2 turn.
All I can say is your arms need to bend like a coathanger to get at it. Closing your eyes and sticking your tongue out the left corner of your mouth somehow increases the chances of success.
well yesterday when I was messing with the solenoid it seemed like the plunger would only drop when I unplugged the solenoid. I could be wrong. I am going to go adjust the idle and check out the solenoid a lot closer when I get home.
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