Will not start it cranks but no instruments or fuel pump

Tiny
LONGHORN69
  • MEMBER
  • 1996 DODGE VAN
  • 4.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
I have a 96 Dodge Mark III conversion van. The battery died on it I had it on charge for a day but the in the end I changed the battery. Afterwards when I put the new battery in it would crank but wouldn't start. The fuel pump is not coming on and the amp gauge and the fuel gauge doesn't work. I checked the fuses inside and out and check for the power and all is good. I switch the A/C relay and the run stop relay no change. I am getting power to the fuses when I turn the key on. I cant figure out how to check the computer and I am a wits end with this. I need it for work so if anyone has ever had a problem Like this let me know. I know I am asking a lot but I am a disabled Veteran and do not have money even for a donation at this time. Any Help would be appreciated.
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Tuesday, November 10th, 2015 AT 9:24 AM

4 Replies

Tiny
WRENCHTECH
  • EXPERT
Did you happen to hook it up backwards for even a split second?
Does the check engine light come on for bulb check when the key is first turned on?
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Tuesday, November 10th, 2015 AT 9:54 AM
Tiny
LONGHORN69
  • MEMBER
No I didn't and the lights come on when you hit the key but the gauges do not respond when the key is turned on. It acts normal except for those few things.
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Tuesday, November 10th, 2015 AT 10:02 AM
Tiny
WRENCHTECH
  • EXPERT
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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Tuesday, November 10th, 2015 AT 10:56 AM
Tiny
LONGHORN69
  • MEMBER
Thank you for the info and I will get back to you on results. Can I use my kid to test the spark on the spark plugs LMAO.
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Tuesday, November 10th, 2015 AT 12:39 PM

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