code 300 when cold

  #1  
Old 02-17-2009, 09:03 PM
Banned
Thread Starter
Join Date: Jan 2009
Location: United States
Posts: 12
Default



2000 V6 starts hard when cold. Im getting a code 300(random misfire)


runs great after warm up and starts fine when warm. how come it fires fine when its warm?
 
  #2  
Old 02-19-2009, 10:07 PM
Banned
Thread Starter
Join Date: Jan 2009
Location: United States
Posts: 12
Default

could it be a knock sensor?
 
  #3  
Old 02-20-2009, 01:19 PM
Banned
Join Date: Jul 2008
Location: Riveria of America
Posts: 2,748
Default

How much mileage on your L300, and when was the last time the intake system was serviced ??
 
  #4  
Old 02-20-2009, 07:33 PM
Banned
Thread Starter
Join Date: Jan 2009
Location: United States
Posts: 12
Default

87000. I just replaced the oil cooler. when I put the top end back together it started right up. them I changed the tranny filter and now its hard to start. It cranks for about a minute before I hear it fire. when I do get it started it runs rough like the choke isnt on. then if I turn it off, remove the key and start it again it runs at a high idle like its supposed to.
 
  #5  
Old 02-20-2009, 08:05 PM
Banned
Join Date: Jul 2008
Location: Riveria of America
Posts: 2,748
Default



Hmmmm ... sounds like a shorted engine coolant temperature sensor. Replace that, and your problems will probably disappear
 
  #6  
Old 02-24-2009, 01:07 AM
Banned
Thread Starter
Join Date: Jan 2009
Location: United States
Posts: 12
Default

you are a GENIUS! thanks...works great
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
blaxle
Saturn S Series Sedan
7
01-03-2011 10:05 PM
jackmoz
Saturn L Series Sedans & Wagons
1
10-25-2009 08:06 PM
junkey
Saturn L300
1
06-24-2009 06:43 AM
CO2Man
Saturn L300
2
06-21-2007 01:48 AM
mikes 1994 z28
Saturn S Series Sedan
1
08-09-2006 09:08 AM


Thread Tools
Search this Thread
Quick Reply: code 300 when cold


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.