WON'T START
Thread Starter
Joined: Aug 2007
Posts: 1
From:
WON'T START
I have a 1994, v6, 5 speed. It was running fine and all at once while at hwy speed, started backfiring while accelerating (timing problem?). On slow acceleration it was ok.The next day it was hard to start.Itran like this about3 weeks. One morning it would not start. I pulled a plug and found a weak (red) spark. I have replaced all these with new; the Coil pack ( the old one checked ok, ignition module, plug wires, crankpick-up andpowertrain control module, new battery.
Still a weak spark.I connected a code reader. their was a code for missfiring and a 02 senser. I ran a separate groundto the coil. Battery voltage,12.1
Whenit is crankingthe voltage tothe coil pack is11.6v, the same as the battery voltage.11.6 volts
HELP!!!!!
John
Still a weak spark.I connected a code reader. their was a code for missfiring and a 02 senser. I ran a separate groundto the coil. Battery voltage,12.1
Whenit is crankingthe voltage tothe coil pack is11.6v, the same as the battery voltage.11.6 volts
HELP!!!!!
John
2nd Gear Member
Joined: Mar 2007
Posts: 301
From:
RE: WON'T START
altinator. i dont think it will be a direct cause of backfire, but the mecahnical portions will not run proporly causing your engine to feel like its backfirined ( hell it coudl accually be backfiring) but thats my opinion
3rd Gear Member
Joined: Oct 2006
Posts: 654
RE: WON'T START
ORIGINAL: floridajohn
I have a 1994, v6, 5 speed. It was running fine and all at once while at hwy speed, started backfiring while accelerating (timing problem?). On slow acceleration it was ok.The next day it was hard to start.Itran like this about3 weeks. One morning it would not start. I pulled a plug and found a weak (red) spark. I have replaced all these with new; the Coil pack ( the old one checked ok, ignition module, plug wires, crankpick-up andpowertrain control module, new battery.
Still a weak spark.I connected a code reader. their was a code for missfiring and a 02 senser. I ran a separate groundto the coil. Battery voltage,12.1
Whenit is crankingthe voltage tothe coil pack is11.6v, the same as the battery voltage.11.6 volts
HELP!!!!!
John
I have a 1994, v6, 5 speed. It was running fine and all at once while at hwy speed, started backfiring while accelerating (timing problem?). On slow acceleration it was ok.The next day it was hard to start.Itran like this about3 weeks. One morning it would not start. I pulled a plug and found a weak (red) spark. I have replaced all these with new; the Coil pack ( the old one checked ok, ignition module, plug wires, crankpick-up andpowertrain control module, new battery.
Still a weak spark.I connected a code reader. their was a code for missfiring and a 02 senser. I ran a separate groundto the coil. Battery voltage,12.1
Whenit is crankingthe voltage tothe coil pack is11.6v, the same as the battery voltage.11.6 volts
HELP!!!!!
John
you may continue to rule-out the simple stuff, but be ready to learn the worst.
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