Won't start no spark no injector Pulse

Tiny
BURNETTE'S AUTO
  • MEMBER
  • 1999 DODGE RAM
  • 101,868 MILES
99 Dodge Ram 1500 5.9 Cranks good no spark or injector pulse, has new crank sensor & ign switch. No voltage to coil or distributor. What to test first?
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Monday, April 30th, 2012 AT 10:30 PM

65 Replies

Tiny
HMAC300
  • EXPERT
Scanfor codes and check fuel pressure first
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Sunday, May 26th, 2019 AT 9:16 AM
Tiny
BURNETTE'S AUTO
  • MEMBER
We have no spark, no injector pulse and no communication with on board computer.
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Sunday, May 26th, 2019 AT 9:16 AM
Tiny
ASEMASTER6371
  • EXPERT
Check your power and grounds to the pcm.

Roy
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Sunday, May 26th, 2019 AT 9:16 AM
Tiny
MIKEDEROUIN88
  • MEMBER
Look in your power distribution box there should be a 100amp main fuse see if its blown
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Sunday, May 26th, 2019 AT 9:16 AM
Tiny
ASEMASTER6371
  • EXPERT
Any luck?

Roy
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Sunday, May 26th, 2019 AT 9:16 AM
Tiny
BURNETTE'S AUTO
  • MEMBER
No. Thanks for your answers though.
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Sunday, May 26th, 2019 AT 9:16 AM
Tiny
4JSFARM
  • MEMBER
  • 1998 DODGE RAM
Electrical problem
1998 Dodge Ram V8 Four Wheel Drive Automatic

check and no spark at coil or plugs should check for power at coil next?
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Monday, July 6th, 2020 AT 1:41 PM (Merged)
Tiny
JDL
  • EXPERT
Welcome to the forum, yeah, check primary voltage to coil and injectors, engine cranking, dark green wire with orange tracer, should be hot. That voltage comes from the asd relay, that doesn't mean the relay is faulty, check the relay circuits for voltage and ground. The pcm grounds the relay, a common reason for no ground, the computer thinks there is a problem with the cam or crank signal circuit.
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Monday, July 6th, 2020 AT 1:41 PM (Merged)
Tiny
CARL MEIER
  • MEMBER
  • 1998 DODGE RAM
  • 185,000 MILES
Started and quit, second it back fired and refused to start again
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Monday, July 6th, 2020 AT 1:41 PM (Merged)
Tiny
RASMATAZ
  • MEMBER
Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if okay-check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, cap and rotor, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing
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Monday, July 6th, 2020 AT 1:41 PM (Merged)
Tiny
DONNIB455
  • MEMBER
  • 1998 DODGE RAM
Electrical problem
1998 Dodge Ram V8 Four Wheel Drive 177000 miles

TRUCK DRVE AND STARTED FINE TESTERDAY. WENT TO START THIS MORNING IT TURNS OVER BUT WILL NOT START
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Monday, July 6th, 2020 AT 1:42 PM (Merged)
Tiny
JDL
  • EXPERT
Welcome to the forum. Did you visually check for spark at the plugs, engine cranking? If no spark, check the smaller primary circuits at the coil, engine cranking. You should be able to check for mil codes. You cycle the key, on--off, on--off, on, then the check engine lite starts flashing, you count the flashes to get the codes. Your lookng for two digit codes. You turn key till dash lites come on, no further.
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Monday, July 6th, 2020 AT 1:42 PM (Merged)
Tiny
DONNIB455
  • MEMBER
TRIED THAT LITE DOES NOT FLASH
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Monday, July 6th, 2020 AT 1:42 PM (Merged)
Tiny
JDL
  • EXPERT
Did you visually check for spark at the plugs? Did you check the coil primary circuits?
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Monday, July 6th, 2020 AT 1:42 PM (Merged)
Tiny
DONNIB455
  • MEMBER
Checked plugs still no spark, where are the primary coil circuits located?
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Monday, July 6th, 2020 AT 1:42 PM (Merged)
Tiny
MEGHOLD
  • MEMBER
  • 1998 DODGE RAM
1998 Dodge Ram V8 All Wheel Drive Manual

Ive tried the wires and put in a new coil but my truck still doesnt have any spark! Please help!
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Monday, July 6th, 2020 AT 1:42 PM (Merged)
Tiny
JDL
  • EXPERT
The two small wires at coil. The info I looked at was for 5.9 engine. You can take connector loose, use led testlite between terminals, have helper crank engine, see if testlite will pulse.

When you first turn on the key, does mil come on? Can you communicate with computer? If the computer is awake, that lite should come on? Another thing you can do, is turn on the key, check for ref voltage at any sensor, that uses a ref voltage. If you can't communicate with computer and ref voltage to anything, you may need to check voltage and ground circuits at the computer.
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Monday, July 6th, 2020 AT 1:42 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Have you checked the crank sensor?
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Monday, July 6th, 2020 AT 1:42 PM (Merged)
Tiny
MEGHOLD
  • MEMBER
No I havent. Would no spark have to do with the fuel pump?
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Monday, July 6th, 2020 AT 1:42 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
No, however, have you checked fuel pump pressure?
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Monday, July 6th, 2020 AT 1:42 PM (Merged)

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