2002 Dodge Ram no spark 5.9

190

Asked by Feb 04, 2016 at 04:56 PM about the 2002 Dodge Ram 1500

Question type: General

Ok so this is for all the people googling the question
as to what the hell is wrong with their dodge. As to I
also kept googling the issue with mine and could
not find nothing but finally me and the mad scientist
finally figured it out!!!

Started with the truck drove fine until I got home
and shut it off. The following morning it would not
start. It will crank all day long till the battery died.
Just would not start. I've checked that thing for fuel
pressure even tho I can hear the fuel pump turn on.
Fuel was good and was getting delivered. Fuel
gauge would hold the pressure till I realized it. So
next is checked for spark. No spark going to any of
the 8 plugs. So checked the coil. No spark coming
from the coil. So checked for power at the
connection to the coil and nothing. No power there.
So I looked up on the turn on and off the key 3
times to read a code and nothing would happen.
Odd I know so it lead me to believe it was a bad
PCM. But before I changed the PCM I decided to
change the crank sensor. That was a pain in the ass
job but I did it. Only to find out that it did NOTHING
for my no spark problem. Checked fuses and
swapped relays,  Next I chAnged the cap and rotor
for shots and giggles. And still nothing. Next I
bought a new coil and still nothing. Next I bought a
cam sensor/pick up coil. And STILL NOTHING. so I
decided to go ahead and send my PCM in for
check up and get the damn thing fixed. A long 2
weeks and finally my PCM came in the mail. I plug it
in and I almost junked the damn truck cause it still
did not want to turn on only crank. So me and a
friend decided to check the connections. This is for
everybody out there that Google this problem on
their dodge. I say this because I have for 3 weeks
and I couldn't find nothing just other people
googling the same thing and same ol answer to
change the PCM, the crank sensor , the cam
sensor/pick up coil, the wires, the ASD relay, ect.....

There was a couple of bad wires under the fuse box
that's located under the hood. It's the number 87
pin on the fuse box and number 3 on the black and
grey pin on the PCM connector. There was no
continuity through that wire. So people pull your
fuse box out its very simple. Couple of bolts and
there's enough wore there where you don't even
have to disconnect the connectors. The way the
wires are ran in there there's a bend and in time
they get dry rotted on the sleeve and the wire gets
to looking like the post of your battery. I connected
that wire and it's alive again. Good luck peeps I
hope this helps.

6 Answers

190

Also forgot to mention that checking for codes with the key turn on then off, turn on then off, then turn on and leave at on to reveal the code did not work until that wire was fixed. Not I can read for codes.

1 out of 1 people think this is helpful.
25

If this is the cure for all our crank-no-start issues, you are the MAN OF THE YEAR! Can you tell me more about the wires? I don't see a number 87 pin in my manual on any of the connections on the PDC(fuse box under the hood), do you know the wire color or it's function? My PCM has 3 32-pin connectors. Which connector and pin and wire color is it? I have a 2001 1500 5.9L. friartuck@windstream.net

1 out of 1 people think this is helpful.
25

I may have found it on the schematics. Is it a 14 gauge, dark green/orange wire from the ASD RELAY pin 87 in the PDC (Fuse Box under the hood) that goes to the PCM connector 3, pin 12? That is 12 volts that tells the PCM that the ASD Relay has been energized, in addition to powering a lot of the sensors and devices on the engine.

190

Yes if I remember right that's the wire. It's one of the wires that feeds the ASD relay that's comes from the PCM connector. The wire was broke directly under the fuse panel.

190

if I remember right 87 is on the fuse box connector that goes to ASD relay and 3 is on PCM connector.

190

3 the other end of that wire.

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