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1991 Chevy Corsica no spark during warmup

Tiny
IBRUCE
  • MEMBER
  • 1991 CHEVROLET CORSICA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 215,000 MILES
After starting car in very cold weather it drives fine for 10min then dies the car has just got up to temprature. After checking there is no spark on any plug. I changed the ign module and coils and crank sensor. Problem still persists.
the strange part of this is if after it stops I wait 2 min I can drive the rest of the day.
now that the weather is mild just above freezing it takes longer period between stopping and restart
sometimes 1 hour. So it seems to be temprature related. There is a engine code 13 which is disconnected o2 sensor, but I was hoping not to change. I dont think o2 sensor will cause no spark.
what next?
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Saturday, March 22nd, 2008 AT 8:54 PM

2 Replies

Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
That last code tells us the likely problem. Check the ecm ground wire, this will cause the code 13 too. The wire is brown or black and is on the transmission stud ground.
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Saturday, March 22nd, 2008 AT 8:58 PM
Tiny
IBRUCE
  • MEMBER
  • 3 POSTS
Thanks for the reply

i checked the electrical grounds and all are good.

I have also now changed the ecu, crank sensor,
cable from crank sensor and ingnition module.

Lead resistance from plug to plug through coil 25k each.

Problem still same
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Monday, March 31st, 2008 AT 8:05 PM

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