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questions

When you turn the key on and off three times check engine code 1255

What does the crankcase sensor look like

When the check engine light comes on it will start but the light doesn't always come on. The engine will also sometimes die while driving or idling for no apparent reason. The van may start again in 10 minutes or it may take ten days. Not a fuel or battery issue. Have replaced distributor cap, plug wires & crank sensor but having the same problem. Coil is good also, but it only has spark when the check engine light is on. There doesn't seem to be any rhyme or reason to when the light comes on and when it doesn't. Have checked all fuses and cleaned the control module connections and the battery ground wire connections.
Checked the codes but not sure I got them all correct. Possible codes are Solenoid Coil Circuit, Throttle Position Sensor, ASD relay circuit, Fuel Pump Relay control circuit. Does this model have a Z1 voltage I can check?
Any way to pin-point what the issue is? Thanks in advance for your help!

When the Check engine light comes on it will start but it doesn't always come on. Battery's good, replaced distributer cap, plug wires & crank sensor but having the same problem. Coil is good also.
Checked the engine light codes but they were just a series of the light flashing different amounts. How do I find out what they translate to?

I have a 1994 Dodge Ram B250 Van 5.2L MFI 8cyl. 144K miles on odometer and for the most part, in decent shape.
I've been having intermittent problems with the fuel pump not kicking on for a years now. Sometimes it does sometimes it doesn't. I only drive it maybe once a month and I disconnect the battery when not in use. The fuel pump was replaced in 2011 and it's been pretty dependable since then until just recently. If I put a jumper wire in the fuel relay connector, I can start the engine. The relay itself looks good, I took it out of the housing and watched it when someone turned the key. It does a couple really quick clicks and disengages. If I manually push the contact together, the fuel pump runs. My multi-meter says I have 12 volts on both of the wires that would actuate the relay, which explains why it's not engaging. I'm guessing the ECC is disabling the fuel pump but I don't know why. Is the ECC going bad? is there a sensor that is causing the ECC to disable the fuel pump? do I have a short? or a bad connection? Ever since I got the van it's had some performance issues and some electrical issues. The fuel mixture is too rich I think. If I push the accelerator to hard it will stall and sometimes backfire. There are some holes rusted in the exhaust system, maybe the oxygen sensor was causing this? But that's a whole other issue to be addressed after I get it to run. There's always been something drawing power when its off, that's why I simply disconnect the battery when I'm done driving it. I guess my biggest question would be: does anyone know if a wire connector or faulty sensor could cause this? I want to be able to eliminate the cheap possibilities before I try to replace the computer.

My van was working fine i let my brother use my battery when he put it back it wouldnt start everything was dead. No lights no dash panel no crank. I took to autozone they said it was low and charged and i put it back. Still the same thing. I have no headlight, dash is dead and wont turn over or jump.
Please help

What is keeping it from starting?

I just got this van and a few electrical issues exist.
1. When you press the brake (lights on or off) the radio dims to night brightness and the turnsignals stop flashing. I swapped the turn signal relay with the hazard relay and now the signals operate normally, but radio still dims. I don't know what the brake switch has to do with the dimmer.
2. Sometimes the "brake" and "ABS" lights on dash are on, sometimes not. parking brake switch is good.
3. Cruise control does not work at all.
Everything else seems to work ok.

does not shake when accelerating or standing still. The check engine light comes on once in a while but other wise is off. When the check engine light does go on and you check it with a machine it says the 5th injector fail. I have changed the injector & the injector cables, still shakes. I also replaced the oil, air filter, spark plugs, and oil filter, keeps shaking.

HOW MUCH OF A PAIN IN THE A** IS IT TO CHANGE

CAN I RUN IT WITHOUT ONE,I LIVE IN AZ.