C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Car running weird

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Old Oct 9, 2005 | 11:29 PM
  #1  
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From: Sebastian Florida
St. Jude Donor '06
Default Car running weird

Started last monday, started the car and the 'Service engine Soon' light came on and then when the car heated up went out. Now ever since then about every other day the car is hard to start. Then yesterday the car wouldn't start, I could smell gas so I let the car sit an hour and tried again and it finally started and blew black smoke for about a minute then was idling rough.
Anybody know what might be my problem, I checked for codes and there wasn't any?
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Old Oct 10, 2005 | 12:09 AM
  #2  
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From: Lufkin Texas
St. Jude Donor '05-'06
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It's tough to guess without codes without seeing it.

Check for codes again if any of what you spoke of occured after you checked for codes last.

Check all the usual suspects. Spark, vacuume, fuel, timing ect. It almost sounds like rich condition..maybe a leaking injector(s) but it's hard to speculate. Do some more investigation and let us know.
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Old Oct 12, 2005 | 12:47 PM
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Ok, the car finally threw a code today.

What is a code 15?
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Old Oct 12, 2005 | 01:14 PM
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St. Jude Donor '05-'06
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"it"(15) is your coolant sensor on the WP check the plug and/or replace the sensor.
http://www.troublecodes.net/GM/92-93_57P.shtml
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Old Oct 12, 2005 | 08:01 PM
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That explains alot, when I was driving the temp suddenly drop about 20 degrees in about a minute and then went back up.
Thanks!!
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