Notices
Corvette C4 Forum 1984 through 1996

1993 Corvette 40th dying

  #1  
Old 12-20-2018, 05:01 PM
Junior Member
Thread Starter
Join Date: Dec 2018
Posts: 1
Default 1993 Corvette 40th dying

Recently got a 93 corvette off a trade with 105,000 miles. Drove it during the summer and it seemed fine. During colder days (<40), I noticed that it would die at stoplights or after driving in the city for around 20-30 minutes. In addition, I noticed that the car idles high around 1200-1700 rpm and would also shake sometimes. Have recently replaced the air intake gaskets, alternator, Idle air controller , throttle position sensors, fuel pressure regulator switch, and lots of vacuum lines. The car is doing better but still shuts off/almost shuts off at times during some colder days. Could really use some help on what the issue might be. I've heard some recommend fuel pump but that is working correctly. Maybe opti or ECM related? Appreciate it
 
  #2  
Old 12-21-2018, 12:49 PM
73shark's Avatar
Super Moderator
Join Date: Apr 2006
Location: KC, MO area
Posts: 2,736
Default

Welcome to the forum.
Have you scanned for DTCs? What is your fuel pressure with the key on engine off and with the key on engine running? Is the fast idle all the time when the temperature is below 40? Does the coolant temperature warm up to the normal value?
I would check the temperature sensors for ambient, coolant, and oil.
 

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.