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Engine/Transmission (1998.5 - 2002) Truck won't start no tach or lift pump

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Everything was fine two days ago now truck won't start unless I hot wire the lift pump and use either once i get it running no tach . Also fuel gage fuel gage only goes down to 3/4 tank so I ran out of fuel and engine light is on but I don't have a code reader I need to borrow one. Please help

Thanks

Fred
 
Use key to get code on-off on-off on-off on read code on odometer. For lift pump try changing the fuel pump relay with say the horn relay or any working relay. No tach could be crank-cam sensors. fill in your siganture so we know what truck you have.
 
Check your main fuses and relays like mentioned above and get access to a code reader if your truck is a 98 or 99 the key trick will not work. And you really should not be using ether at all, but if you must, make absolute certain your grid heaters are disabled if those things light you can trash your engine.

Once you get it running does it stay running on its own or are you keeping it going with ether? What kind of voltage are you seeing once its running? Another thing to check is all grounds, remove and clean any that are corroded, and if your batts are questionable may be a good time to load check them.
 
1693 Simply means there has been other codes tripped in the ECM, if that is all that is showing by doing the key trick you may need to get a code reader. Like I mentioned proper grounds and voltage is very important so make sure everything checks out in that department. If batts and grounds are good and no bad relays, check the 50 pin connection on the ecm on the drivers side of the engine block for a bad connection/corrosion/broken wires. Unfortunately it sounds like possibly an ecm related issue from what your describing but need to cover the bases first.
 
Now it won't start even with either. once it starts and runs will all the injector lines self bleed? Or maybee they need more bleeding.
 
If your getting air in the system it will make the truck difficult to start, cracking a line or two at the head will help to bleed the air out of the system while cranking. I would really suggest looking into the problem rather than dumping ether into your system, its just not good on the top end of your engine, or injectors. All those parts need the lubrication from the fuel and the ether wipes that out. Not to mention if its cool enough for a grid heater to light off, your going to cause MAJOR damage. Your also taxing your batteries and starter for no reason. Not trying to criticize, just offering my opinion. Get all your grounds checked, check the connection at the ecm, if your batteries are at all suspect, at a minimum I would put a good charge on them but is best to load test them, and go from there. Next step will be checking for voltage coming out of the ecm to the lift pump, and crank sensor.
Also, if you have access to a good code reader that may be helpful.
 
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I am trying to borrow a code reader from a co worker batteries are good. I have no power at the lift pump swapped relays no help. Could the crank sensor cause this? Tach is also inop.
 
If it were me I would check for voltage at both the crank sensor and lift pump. The tach gets its signal from the crank sensor, which gets its voltage from the ecm. The lift pump also gets its signal voltage from the ecm. There Is a relay in between in the pdc, but it sounds like youve checked that.

Edit: I just remembered you have a 00 which has a cam sensor. I'm not certain if the tach gets it's signal from there or if it gets it through the crank sensor like the 98-99's do.
 
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I have a crank sensor i replaced it about 4 years ago. When dose the crank sensor get voltage and how much? I'll check the ECM connector and chase some more grounds thanks for your opinion I didn't know either was that bad. I worked a double shift today and tomorrow is the 4 th maybee Friday I can look at it some more. I'll keep you posted.
Thanks
Fred
 
Fauli code is p0336 crank position A circuit. Will the crank sensor keep the lift pump from running?
Thanks
Fred

Don't know for sure but probably. It is the only way it knows the engine is running. If you bump the starter the pump will run a specified amount of time then shutoff.

Dave
 
I would probe your harness to the crank sensor to verify you are getting voltage to it. I'm not sure on a 2000 which is the supply voltage but you should have 5 volts going to the sensor with the key on. On my 98 it is pin A but it may be different with the later models. If you have voltage and don't see any issues with the harness, it may be worth a try to replace the sensor. I do not know if that would prevent the lift pump from energizing or if you are looking at a different problem there.
 
Fauli code is p0336 crank position A circuit. Will the crank sensor keep the lift pump from running?
Thanks
Fred
Im not sure either when my 01's sensor went the truck would run just very poorly, even when the tach would quilt completly the truck would run.
 
I replaced the crank position sensor and that also took care of the lift pump bleed the injectors some more truck runs again. Still have fuel gage issue but I'll start another thread for that,
Thanks for all the help
Fred
 
I replaced the crank position sensor and that also took care of the lift pump bleed the injectors some more truck runs again. Still have fuel gage issue but I'll start another thread for that,
Thanks for all the help
Fred

Good to hear your up and running. So it was the CPS not showing the engine running and timed out the lift pump.

Dave
 
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