Performance & Maintenance Engine, forced induction, intakes, exhausts, torque converters, transmissions, etc.

Misfire Under load

Thread Tools
 
Search this Thread
 
Old 06-29-10, 01:06 PM
  #1  
BostonSC4
Lexus Test Driver
Thread Starter
iTrader: (2)
 
BostonSC4's Avatar
 
Join Date: Aug 2009
Location: MA
Posts: 1,220
Likes: 0
Received 0 Likes on 0 Posts
Default Misfire Under load

Hey guys, I really need your help here. I'm trying to sell my SC soon like within the next few weeks and I'm having an issue in a BIG way. I cannot sell my SC with it running like this. It will give a random pop (misfire) at idle, but under any moderate to serious load it misfires like a mother clucker. I had a full tune up last year, caps rotors plugs wires and TODAY I got my fuel filter deleted desperately hoping to fix this issue. I'm so disgustingly frustrated that I drove out of the mechanics and misfired all the way home.

I got an main o2 sensor code and a few weeks after is when this misfiring under load started. Could a main o2 sensor cause this misfiring? Please help me, I'm desperate.
Old 06-29-10, 06:06 PM
  #2  
fried_rice
Pole Position
iTrader: (20)
 
fried_rice's Avatar
 
Join Date: Oct 2007
Location: Houston, TX
Posts: 294
Likes: 0
Received 2 Likes on 2 Posts
Default

It could be anything. But the easiest thing would be to check your spark plugs; make sure they are gapped low enough and not fouled out. It's most like an ignition problem, MAF, Timing, or wiring. Good luck.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Hanxious
GS - 3rd Gen (2006-2011)
16
02-06-17 07:56 AM
topdog849
Performance & Maintenance
2
10-04-09 04:55 PM
redgt
IS - 1st Gen (2001-2005)
12
01-09-09 07:34 PM
rjm0521
RX - 1st Gen (1999-2003)
4
01-12-08 08:19 PM



Quick Reply: Misfire Under load



All times are GMT -7. The time now is 03:51 PM.