1998 Ram v10 no spark
#1
07-22-2018, 10:07 PM
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1998 Ram v10 no spark
i have a 98 Ram no spark it cranks but no spark. The asd relay and the fuel pump relay both work as they could. Asd has 12v at pin 30 . I suspected crank sensor even though I tested old one and it had correct voltage. But after new pine went in still no spark. I check power wire to coil packs and has 12v for about 3 seconds then when I crank voltage is present again. So I suspected the coils were bad did a resistance check and they were good, but still went ahead and ordered new ones and installed and still same issue NO SPARK. 😑 so I then checked all relays and fuses and 30 amp engine control 1 fuse was blown so I replaced with new one. ASD and FUEL PUMP relays still click on when supposed to. I checked fuel pressure and it’s at about 45psi. Anyone have any suggestions I could try? Please and thanks in advanced
#3
07-23-2018, 03:18 AM
i have a 98 Ram no spark it cranks but no spark. The asd relay and the fuel pump relay both work as they could. Asd has 12v at pin 30 . I suspected crank sensor even though I tested old one and it had correct voltage. But after new pine went in still no spark. I check power wire to coil packs and has 12v for about 3 seconds then when I crank voltage is present again. So I suspected the coils were bad did a resistance check and they were good, but still went ahead and ordered new ones and installed and still same issue NO SPARK. 😑 so I then checked all relays and fuses and 30 amp engine control 1 fuse was blown so I replaced with new one. ASD and FUEL PUMP relays still click on when supposed to. I checked fuel pressure and it’s at about 45psi. Anyone have any suggestions I could try? Please and thanks in advanced
#5
07-23-2018, 08:10 PM
If you get injector pulse and power to the coil then it's not your PCM that would mean your coils are bad. Basically how it works is PCM gets a signal from the crank sensor which sends it to the coil and then the coil distributes that power to the cylinders. Also is fires the injectors
#6
07-23-2018, 08:55 PM
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#7
07-23-2018, 08:57 PM
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hey you should make sure all of your spark plug wires are in the right firing order on the distributor, I bought a 2000 1500 sport with no spark issue and it happened to be all the wires were misplaced and wasn’t firing where it needed to be.
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#8
07-24-2018, 07:36 AM
#9
07-25-2018, 01:13 PM
But you would still get spark from the plug wires, assuming the coil was connected correctly and the wires to the cylinders were wrong. A spark wire tester would show this. Mine ran on starting fluid before it had a no spark issue.