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Ignition/Tuner/ECM/Fuel Injection Need advice on ignition issues? Questions about a tuner? Have questions about a EFI calibration or Fuel Injection? Tips on Engine Diagnostics, how to get codes, and what they mean. Find your answers here.

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Old Jul 24, 2009 | 06:24 PM
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quigley
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Default Need help please.
Went for a ride, back cylinder quit firing. For the next 40 miles the back cylinder would fire and quit off and on. Next day tried to duplicate the problem in my garage. Ran good. took it down the road to put a load on it and after about 1 mile the motor started to crap out real bad. Took it home changed plugs and wires, took it out same thing. Bought a new coil. Installed new coil only rear cylinder would fire. Single fire Crane Hi 4 ignition. Tested module according to Crane tech and it tested good. Put the old coil back on, runs fine till you take it down the road and then it craps out. New coil tested OHMS 7 old coil OHMS 3. Any help would be greatly appreciated as I'm out of ideas.
Thanks Quigley
 
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Old Aug 8, 2009 | 01:30 PM
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canuck pride's Avatar
canuck pride
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Sounds like low voltage.
 
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Old Aug 9, 2009 | 02:43 PM
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quigley
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Voltage is fine 13.9. Going to replace the ignition module.
Quigley
 
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