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BluBByGirl
New User
Jan 2, 2014, 12:46 PM
Post #1 of 2
(1407 views)
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This Girl Needs Help!
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I am at a loss. It started about a week ago. Driving and the van just died. It is a 92 B250 with a 318 5.2L. Tried to start it and it would crank but i couldn't hear the fuel pump, replaced that 6 months ago. I checked the relays and could not find anything. Tried starting it and it fired up. Drove home.
It did this to me on and off all week and then it just wouldn't restart. I towed him home and hard wired the fuel pump and it works but still wouldn't start. So I went ahead and replaced all the relays and repaired a couple of wires. Still nothing. I replaced the ignition switch it was pretty corroded and it fired up. Went to drive to work made it there, about 40 minutes, and it died down the street from my house on the way back. I replaced the neutral safety switch because had oil in it. I had my transmission rebuilt about 8 months ago. I also replaced the switch plate assembly/cam shaft sensor. I am thinking it may be the crankshaft. I also now do not have any spark and still no power to fuel pump when key is turned. It cranks but doesn't start.
I don't know what else to do??? this is my only car and i need it to take my kids to school and for work. PLEASE HELP!!!
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Hammer Time
Ultimate Carjunky
/ Moderator
Jan 2, 2014, 1:47 PM
Post #2 of 2
(1395 views)
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Re: This Girl Needs Help!
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All I can do is tell you how to test it.
All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be tested during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.
Every engine requires spark, fuel and compression to run. That's what we have to look for.
These are the basics that need to be tested and will give us the info required to isolate a cause.
1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.
2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.
3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.
4) If all of these things check good, then you would need to do a complete compression test.
Once you have determined which of these functions has dropped out,
you will know which system is having the problem.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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