Go Back   Club Lexus Forums > Lexus Model Forums > SC Models > SC 400/300 > Performance & Maintenance
Sign in using an external account
Register Forgot Password?

error code p0110 (intake air temp sensor) thoughts?

Reply
 
 
 
 
Thread Tools Search this Thread Display Modes
Old 06-02-14, 08:37 PM   #1
greens14
Lead Lap
Trader Score: (26)
 
greens14's Avatar
 
Join Date: Sep 2011
Location: az
Posts: 700
Default error code p0110 (intake air temp sensor) thoughts?

Hey guys, I just recently started throwing code p0110 as long with severe misfires:

past info, I did blow a hose and overheat a few days ago, but upon replacing of hose/radiator/flushing cooling system, the car has been running great.

the car idles PERFECTLY until any throttle or rpm fluctuation... IE there are no misfires until i place my foot on the gas, put the car in drive, or turn on the A/C.


troubleshooting completed:
-The car idles with maf disconnected.
- i have swapped to a known working maf, the issue still occurs.
- i have spot checked fuel lines from inside the tank/ fuel pump to undercarriage ( should i be looking closer here?)

strange issue that makes me think its fuel related


- the car runs MUCH BETTER ...to the point where you have to listen closely for misfires, if i leave the fuel pump ecu disconnected (located behind rear q/r cover) ...BUT if i idle and use the AC, it has a severe misfire,

--- id like to check the continuity of the wiring from the maf to the IACV but i am waiting on a working multimeter, mine are throwing out crazy numbers at the moment (187 instead of 0 or 0L at default readings)

my thoughts are this is definitely fuel related, but i could clean the IACV, bypass the fuel pump ECU entirely (through wiring), or swap the ECU. I am just not looking to make any permanent changes or throw money at it without appropriate testing or valid reasoning.


thoughts?
This ad is not displayed to registered members.
Register your free account today and become a member on Club Lexus!
greens14 is offline   Reply With Quote
Old 06-02-14, 10:41 PM   #2
oldManTan
Lead Lap
Trader Score: (0)
 
Join Date: Jan 2014
Location: illinois
Posts: 773
Default

p0110 is an IAT Circuit Malfunction and a google search came up with this

http://www.clublexus.com/forums/ls40...lfunction.html
__________________
'92 SC400 Tan on Tan, BFI, Tanabe Medallion exhaust,
Megan Racing EZ Street Coilovers, TechnaFit SS lines, Blue TT Calipers,
A/T Solenoid Bypass, TT Auto Diff, MKIV LCAs,
4300k HIDs, IS300 Steering wheel,
Cobra R Reps 17x9 DZ102 225,45,
hopefully a 5 speed swap in the near future Build Here
oldManTan is offline   Reply With Quote
Old 06-02-14, 10:42 PM   #3
oldManTan
Lead Lap
Trader Score: (0)
 
Join Date: Jan 2014
Location: illinois
Posts: 773
Default

this is an awesome site by the way, tells you absolutely every single code in a generic way so you can start googling away
__________________
'92 SC400 Tan on Tan, BFI, Tanabe Medallion exhaust,
Megan Racing EZ Street Coilovers, TechnaFit SS lines, Blue TT Calipers,
A/T Solenoid Bypass, TT Auto Diff, MKIV LCAs,
4300k HIDs, IS300 Steering wheel,
Cobra R Reps 17x9 DZ102 225,45,
hopefully a 5 speed swap in the near future Build Here
oldManTan is offline   Reply With Quote
Old 06-04-14, 10:30 AM   #4
greens14
Lead Lap
Trader Score: (26)
 
greens14's Avatar
 
Join Date: Sep 2011
Location: az
Posts: 700
Default

thanks for the update.


so the issue only occurs during closed loop (only occurs when the car is warm OR not wide open throttle)


its not the maf
not the coolant temp sensor
still occurs with both o2 sensors unplugged
tps shows appropriate resistance
grounds are secure


what else should i be checking?
greens14 is offline   Reply With Quote
Old 06-12-14, 12:04 AM   #5
greens14
Lead Lap
Trader Score: (26)
 
greens14's Avatar
 
Join Date: Sep 2011
Location: az
Posts: 700
Default

edit. it was coolant in the sparkplug valley. new plugwires / boots, removing coolant and issue was resolved.
greens14 is offline   Reply With Quote
Old 06-12-14, 12:04 AM
 
 
 
 
Reply

Tags
air, error, intake, sensor, temp

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuel Pump & Fuel Pump ECU Issues SC400 Lexus082 Performance & Maintenance 5 07-08-14 02:33 PM
92 300 misfire question DTrizzle Performance & Maintenance 0 07-02-14 02:19 PM
I am surging! RCH701 ES300 and ES330 0 08-29-13 06:03 PM
1992 Lexus SC400 wont rev past 4K???? 1JZPWRD Performance & Maintenance 1 01-01-13 04:07 PM
'97 LS400 Stalling, now will not start. Possible fuel pump failure? Entropic86 LS400 13 10-01-12 06:51 AM

All times are GMT -7. The time now is 03:22 AM.

Join ClubLexus
Advertising


Copyright © 2000-2008 Internet Brands, Inc. All Rights Reserved
Privacy Policy | Disclaimer | Terms of Use | JOBS


Get all contact info