Truck wont shut off!

[slow_90firebird]

Guys I need advise quick about the stock VE pump 1993 W250 auto.

Went to shut truck off today and it kept running. Ok, so I figure maybe shutoff solenoid wore out and its time for a pull cable.

Popped the hood and pressed the manual shutoff lever to the stop, kept running. Pressed it again and held it for about 5 seconds, and it finally slowed the idle but wouldnt shut off.

Went back and turned the ign off and took the key out, still running. Tried the shutoff lever and now it wont even lower the idle.

Ended up choking the turbo with a piece of wood so it doesent run all night, but i need to figure something

[skilletky]

sounds like yer ip has taken a crap. have you turned the pump up at all? dose it run normal with the ign off and the manual shut off lever pushed?

[142autox]

I'm new to this but, is it possible that debris from the failed solenoid is lodged in the pump? May be worth pulling it to have a look especially since its probably bad anyway.

[slow_90firebird]

I had it turned up at the power screw and also the 366 spring...

I really cant believe that both means of shutting off the engine would break in the same day. I dont know how the manual shutoff lever works, but I feel like if I could push it farther it would probably work...

Other than that truck seems to run normal...

[Tsbourne09]

Try not to kill your engine by cutting off the air. Just pull the fuel line off pre fuel filter. Choking it can cause damage to the engine or air lock it. If you have been in the pump before you may not have the foot thats cuts the fuel off set in the right spot. I have been through 3 fss and this time i stripped the rubber stopper off mine and rigged up a nice pull cable.

[Tacoclaw]

I've never heard of choking them hurting anything.
Besides, ya gotta do what ya gotta do.

If you think it'll shut off if the lever moves further, you can move the shutoff lever on it's splines while it's still on the truck. Just make sure you keep a really close eye on where it went if it doesn't work.

[slow_90firebird]

Ok thanks guys i need to get this thing fixed asap my dad found out and he wont let me park it in the driveway now so its in the road but there is a parking ban so I might get ticketed.

First thing first I want to get the manual shutoff working. Is there any way I can adjust it without taking the pump top off again? I had it off for the gov. spring install, but that was a nightmare week long project with the truck running away ect.

If I loosen the little bolt on the manual shutoff lever, is there a risk of the shaft getting sucked into the pump or anything else going wrong? What else could get messed up by re-indexing it?

Or do you guys think my best bet is to forget the manual shutoff and get a new solenoid. its $100 at NAPA.

I just dont understand, it seems like people with their pumps maxed out alot more than mine can still get away with using the manual lever. And why would they both stop working at the same time dont they shut down the engine by different means?

[Tacoclaw]

Yeah, you can pull the lever off and move it either direction. I do think there's an o-ring back in there, so keep an eye out for it. Mine didn't seem be able to get shoved back in the pump, but I'd use the screw to pull the lever all the way in rather than push it onto the splines.


Did you ever use the manual shutoff before? Maybe it never worked after you put it together and you just didn't find out until now.

[slow_90firebird]

I know I have tried it before and it worked mint, shut the truck off right quick. I just cant remember if I tried it after I put the gov. spring in. Is there somehow I could have messed it up? I dont remember ever removing it from the pump top at all, I left it as it was. However, I do remember that in order to get the truck to run properly, I had to index the throttle in a complete different spot than it was origionally. I tried taking a picture and putting it back as it was origionally, but the truck was just revving way up as soon as I started it and I had to choke it. I used trial and error to find a spline where I could adjust the idle screw to maintain a good idle. And the truck drives great and makes good power.

If I have to take the pump top off I will need to find a store that sells that big gasket too, mine wont work for another time of taking it off. It was pretty sorry last time and I reused it because I couldnt source one.

Also, do you know why there are 2 different wires attached to the shutdown solenoid stud? Not just one? And can I test the solenoid by jumping either hot or ground from the battery, to make sure its not an electrical issue?

[Tacoclaw]

If it's anything internal I've got no idea. Never been in one.

No idea on why there's 2 blades coming off the FSS, maybe it's for key-on power to another source somewhere. I believe those solenoids default to shutdown, there's not much you can do to test it. If the key is off the spring should manually kill the fuel. I guess you could try to tap on it while the key's off and see if something's got it bound up internally. Otherwise just pull it out and see if the tip is all chewed up.

[slow_90firebird]

hmm cant believe that it needs a new pump. Its gotta be something stupid that I can fix. Usually when an IP goes bad I would assume there would be some other running conditions ect. but mine still runs great just no shut down.

[Tsbourne09]

Taking the pumPtop off is really easy. I could have it off and back on right in less than 1hr less than 10 mins with my denny t pump top. Try adjusting the kill lever location. There is a o ring in there. I had to replace mine. Doubt u need a new ip. My fss has 2 prongs also, All 3 of mine do lol... Dig i may have some pics in my photobucket, on my phone now so canT check...

[Tsbourne09]

Just so you know what you see in your pic is the ksb. The fss is between the pump and windsheild. Ksb is between the pump and driver side tire. Lol good reference points hu? ...

[slow_90firebird]

The connectors I was questioning can be seen in the pic just above the end of the TV cable. Blue wire.

The lever I am trying to use as the manual shutdown is the one in the picture just above the connector to the "ksb".

I need to play with it some more tomorrow, im probably gonna order a new shutdown solenoid on ebay I found one cheaper that works on cummins, VW, MB diesels ect. Also might order a pump seal kit...

So if I remove that bolt or nut holding on the shutdown lever, what is the best method to properly index it?

[Tsbourne09]

take it apart and look....