1998 Dodge Ram TRUCK WITH NO SPARK?

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, December 7th, 2009 AT 1:41 PM

5 Replies

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, December 7th, 2009 AT 1:51 PM
Tiny
DONNIB455
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TRIED THAT LITE DOES NOT FLASH
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Monday, December 7th, 2009 AT 1:56 PM
Tiny
JDL
  • EXPERT
Did you visually check for spark at the plugs? Did you check the coil primary circuits?
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Monday, December 7th, 2009 AT 3:16 PM
Tiny
DONNIB455
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Checked plugs still no spark, where are the primary coil circuits located?
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Monday, December 7th, 2009 AT 3:21 PM
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, December 7th, 2009 AT 3:41 PM

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