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

Check engine light only on when coasting or idle

Thread Tools
 
Search this Thread
 
Old 12-14-20, 07:53 AM
  #1  
rvaddict
Driver School Candidate
Thread Starter
 
rvaddict's Avatar
 
Join Date: Nov 2020
Location: CA
Posts: 7
Likes: 0
Received 1 Like on 1 Post
Default Check engine light only on when coasting or idle

Has anyone seen this? My check engine light is on when idle, on when coasting, but on any acceleration, or just freeway driving, the light goes off. I was having a MAF sensor code but I put in a new one and it didn't work, so I just had all the capacitors replaced in the computer. The car really seems to run much better and idles perfectly after the capacitors replacement, but the engine light is still on and it will not pass the smog test when that pesky light is on. Thank you.
Old 12-14-20, 04:10 PM
  #2  
Tallyhoe
Advanced
 
Tallyhoe's Avatar
 
Join Date: Feb 2020
Location: CA
Posts: 584
Received 138 Likes on 108 Posts
Default

What speed are you coasting at?? Is it a stall?? I've noticed this while coasting but its intermittent... it only happens when my idle is low, other times it idles perfectly and have no issues. If it isn't your MAF then it may be IAC valve... which I will be troubleshooting soon... I may be wrong..
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Dribble
RC F (2015-present)
16
12-12-20 05:16 PM
Southaven
Performance & Maintenance
0
07-08-16 07:52 AM
SoCalGS
GS - 2nd Gen (1998-2005)
11
07-30-12 05:48 AM



Quick Reply: Check engine light only on when coasting or idle



All times are GMT -7. The time now is 11:13 AM.