LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Missfire at Operating Temp.

Thread Tools
 
Search this Thread
 
Old 05-10-2005, 07:07 PM
  #1  
11 Second Club
Thread Starter
 
Aries's Avatar
 
Join Date: Oct 2002
Location: Austin, TX
Posts: 895
Likes: 0
Received 0 Likes on 0 Posts

Default Missfire at Operating Temp.

Car has developed a random and progressively worsening missfire once reaching 180 degrees. Ideas?
Old 05-11-2005, 09:30 PM
  #2  
11 Second Club
Thread Starter
 
Aries's Avatar
 
Join Date: Oct 2002
Location: Austin, TX
Posts: 895
Likes: 0
Received 0 Likes on 0 Posts

Default

anyone?
Old 05-11-2005, 10:34 PM
  #3  
TECH Enthusiast
 
NXSLT1's Avatar
 
Join Date: Sep 2004
Location: Clarksville,Tn
Posts: 595
Likes: 0
Received 0 Likes on 0 Posts

Default

Mine was plug wires awhile back. It ran fine cold but after it warmed up it would miss terribly. Check for burnt plug wires. Raise the hood up at night and look/listen for arcing.
Old 05-12-2005, 10:01 AM
  #4  
TECH Enthusiast
iTrader: (4)
 
Low N Slow's Avatar
 
Join Date: Mar 2005
Location: Stanwood, WA
Posts: 546
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by speedluv
Mine was plug wires awhile back. It ran fine cold but after it warmed up it would miss terribly. Check for burnt plug wires. Raise the hood up at night and look/listen for arcing.
Mine did the same thing, plug wires were bad too.
Old 05-12-2005, 10:14 AM
  #5  
11 Second Club
Thread Starter
 
Aries's Avatar
 
Join Date: Oct 2002
Location: Austin, TX
Posts: 895
Likes: 0
Received 0 Likes on 0 Posts

Default

Thanks Guys, Hadn't Thought Of That One Yet
Old 05-12-2005, 12:09 PM
  #6  
TECH Senior Member
 
Vendetta's Avatar
 
Join Date: Jun 2003
Location: NYC metro area
Posts: 9,339
Likes: 0
Received 1 Like on 1 Post

Default

have you checked the opti and O2s? What could heat create as a problem that would lead to misfiring?
Old 05-12-2005, 02:52 PM
  #7  
11 Second Club
Thread Starter
 
Aries's Avatar
 
Join Date: Oct 2002
Location: Austin, TX
Posts: 895
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by Vendetta
have you checked the opti and O2s? What could heat create as a problem that would lead to misfiring?
Just rebuilt the OPTI again as a precaution, and the O2's are reading normally on the scanners.
Old 05-12-2005, 09:32 PM
  #8  
TECH Senior Member
 
Vendetta's Avatar
 
Join Date: Jun 2003
Location: NYC metro area
Posts: 9,339
Likes: 0
Received 1 Like on 1 Post

Default

Originally Posted by Aries
Just rebuilt the OPTI again as a precaution, and the O2's are reading normally on the scanners.
Damn...
Old 03-07-2011, 05:12 PM
  #9  
Teching In
 
MasPerformance's Avatar
 
Join Date: Jul 2009
Location: brevard county FL
Posts: 45
Likes: 0
Received 0 Likes on 0 Posts
Default

mines doing the same thing. ive got mine tuned to use 160 degree thermostat and right then it starts freakin out. i think it may have a problem with the tune



Quick Reply: Missfire at Operating Temp.



All times are GMT -5. The time now is 03:02 AM.