Honda Car Forum


 

Go Back   Honda Car Forum - Accord Parts Civic Tuning Acura Racing > Honda Acura > Honda 3

Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 17 Dec 2019, 08:56 am
TE Cheah
Guest
 
Posts: n/a
Default F20A 's service schedule should incl checking throttle*sensor 's wear

every 60,000 km ; *'s resistance betw the 2 pins connected to yellow+white & red+black wires ( on *'s plug ) ↑ with wear ( as the electrical contact areas ↓, the ampere flowing through ↓, so resistance↑ ). A usable * ( @ rest ) can have just 411 ohm but a worn * ( causing idle rpm to fluctuate betw 1400 & 600 ) can have 1110 ohm. ECU interprets this higher resistance as throttle plate having turned >20º, & soinjects more petrol, so (i) spark plugs foul (ii) bottom of the idle air screw ( on throttle body ) gets much soot, so less & less air can flow past,so idle rpm keeps dropping.
Meters' panel does not show, & very few users connect a volt meter to, O2 sensor's output voltage ( -ve during idling, if sensor is not hot enough ),so nearly no user can notice too much petrol is injected.
Reply With Quote
  #2 (permalink)  
Old 10 May 2020, 01:40 am
TE Cheah
Guest
 
Posts: n/a
Default Re: F20A 's service schedule should incl checking throttle*sensor 's wear

I have removed * altogether, after I connected a 380 ( any value between 375 & 410 can do ) ohm resistor to these 2 wires, so ECU always detects just 380 ohm i.e. ECU presumes throttle is closed, so ECU will never ground injectors longer to inject more petrol. Then engine works fine since 1-20 : torque is already 2x original after I corrected ~15 design flaws, so fuel enrichment by ECU is no longer necessary.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
throttle body position sensor/throttle body replacement? Cody Honda Technical 1 06 Nov 2013 01:01 am
Throttle Assembly - Throttle Sensor k_ross_burlington Honda 3 11 14 Feb 2010 12:28 pm
Honda CR-V Throttle Sensor Faye Honda Technical 0 24 May 2008 12:54 pm
throttle position sensor 1990 Civic - can't remove, just replace throttle body? dex3703 Honda 2 4 29 Jan 2007 02:37 pm
Throttle Position sensor on CRV Kardypaine Honda 2 2 01 Dec 2006 05:11 pm


All times are GMT -5. The time now is 09:09 am.


Attribution:
Honda News | Autoblog
Powered by Yahoo Answers




Powered by vBulletin®
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
HondaCarForum.com is not affiliated with Honda Motor Company in any way. Honda Motor Company does not sponsor, support, or endorse HondaCarForum.com in any way. Copyright/trademark/sales mark infringements are not intended or implied.