Other Engine light on after cleaning throttle body - Civinfo
 16Likes
  • 1 Post By PaulM-EX
  • 2 Post By scaramanga
  • 2 Post By Bones126
  • 2 Post By Alpha008
  • 1 Post By scaramanga
  • 3 Post By warhawk
  • 1 Post By warhawk
  • 2 Post By PaulM-EX
  • 1 Post By PaulM-EX
  • 1 Post By Bones126
 
LinkBack Thread Tools
post #1 of 20 (permalink) Old 20th April 2019, 13:32 Thread Starter
 
Join Date: 22nd July 2018
Posts: 72
Thanks: 14
Thanked 8 Times in 8 Posts
iTrader: (0)
Engine light on after cleaning throttle body

Afternoon all. So I've just had the airbox out cleaning the throttle body. Managed to get everything out and back in ok without too much difficulty and felt quite pleased with myself for doing so only to find I now have an engine management warning light on.

The car starts no problem and seems to drive ok after a quick test run around the block, pulls cleanly away with no apparent hesitation or stuttering like it was before cleaning. I'm not overly worried that its something majorly serious and I'm guessing that me rumaging around unplugging stuff has disturbed something but has anyone else ever had this happen.

I dont have an OBD tool to plug in (I do but with a different connector) so I cant read the fault code. Is there any other way to find out the fault, or can anyone offer up any other solutions before I have to start thinking about going to a garage.

Cheers.
PaulM-EX is offline  
Sponsored Links
Advertisement
 
post #2 of 20 (permalink) Old 20th April 2019, 14:55 Thread Starter
** Thread starter **
 
Join Date: 22nd July 2018
Posts: 72
Thanks: 14
Thanked 8 Times in 8 Posts
iTrader: (0)
OK quick update, I've managed to get an OBD reader and got two codes coming up.

P0113 Intake air temp sensor 1 circuit high
P0102 Mass or volume air flow A circuit low

I've cleared the codes to get rid of the engine light but what do these mean exactly and is it anything I need to be concerned with?

Cheers again.
CiViC-Fan likes this.
PaulM-EX is offline  
post #3 of 20 (permalink) Old 20th April 2019, 17:47
Supporter
 
scaramanga's Avatar
 
Car: 2015 white orchid 1.6 dtec
Join Date: 9th May 2011
Location: cumbria ENGLAND
Posts: 1,623
Thanks: 11
Thanked 135 Times in 134 Posts
iTrader: (1)
it may have something to do with the method you cleaned them
if the codes have gone and stay away id say your ok
Bones126 and CiViC-Fan like this.
scaramanga is offline  
 
post #4 of 20 (permalink) Old 20th April 2019, 18:44
Supporter
 
Bones126's Avatar
 
Join Date: 25th October 2017
Location: Birmingham
Posts: 1,158
Thanks: 85
Thanked 96 Times in 96 Posts
iTrader: (0)
Garage
I sometimes get codes because I’ve disconnected the wiring plugs/connectors, if you didn’t disconnect the battery. If you have cleared then, which is what I do, and they don’t come back then you should be ok.
PaulM-EX and CiViC-Fan like this.
Bones126 is offline  
post #5 of 20 (permalink) Old 20th April 2019, 20:02
 
Join Date: 22nd October 2015
Location: Germany DE
Posts: 21
Thanks: 66
Thanked 0 Times in 0 Posts
iTrader: (0)
Disconnect the car battery for 30 minutes
Bones126 and CiViC-Fan like this.
Alpha008 is offline  
post #6 of 20 (permalink) Old 21st April 2019, 23:17 Thread Starter
** Thread starter **
 
Join Date: 22nd July 2018
Posts: 72
Thanks: 14
Thanked 8 Times in 8 Posts
iTrader: (0)
Yeah I didn't disconnect the battery before unplugging the MAF sensor. Didn't think I'd need to being honest given that you need the ignition on to open the throttle butterfly, but that's most likely what caused the light to come on.
Hopefully the light will not come back now its been cleared.
PaulM-EX is offline  
post #7 of 20 (permalink) Old 25th April 2019, 00:10
 
Join Date: 20th March 2019
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: (0)
I always clean my MAF sensor without having the engine light up and I never unplug the battery.
I believe the engine light up is due to cleaning of throttle body hence you need to just reset the battery after plugging back the shining clean throttle body.

Btw, which OBD2 model did you use to check the code?
Planning to buy a new unit for my FN2.
hoodyap is offline  
post #8 of 20 (permalink) Old 25th April 2019, 20:23
Supporter
 
Robbie's Avatar
 
Join Date: 26th March 2007
Posts: 90
Thanks: 8
Thanked 6 Times in 6 Posts
iTrader: (0)
Garage
If the fault has been cleared a few ignition cycles seems to cure the light. Took my airbox off the other day and forgot to plug the MAF back in. Engine light cam on when I switched the ignition on, hadn't even started the car. Realise the issue, and plugged the MAF in but the light stayed on for a few cycles then went off.

Tried the disconnecting the battery for 30 minutes which didn't work.
Robbie is offline  
post #9 of 20 (permalink) Old 25th April 2019, 22:26 Thread Starter
** Thread starter **
 
Join Date: 22nd July 2018
Posts: 72
Thanks: 14
Thanked 8 Times in 8 Posts
iTrader: (0)
So to follow up from cleaning the throttle body I now have the crappy idle problem which it seems a few others have also suffered. At slow speeds/low revs the car feels like the throttle is slightly stuck open which can cause sudden jerking/kangarooing. It's possible to drive around the issue to a degree but obviously not ideal.

Ever done a job then wish you hadn't bothered? yeah me too.


So I'm faced with the decision to either take it to a garage to sort, or buy a proper diagnostic tool (foxwell or similar) to try and sort it myself.
PaulM-EX is offline  
post #10 of 20 (permalink) Old 25th April 2019, 23:01
Supporter
 
scaramanga's Avatar
 
Car: 2015 white orchid 1.6 dtec
Join Date: 9th May 2011
Location: cumbria ENGLAND
Posts: 1,623
Thanks: 11
Thanked 135 Times in 134 Posts
iTrader: (1)
sounds like you've cleaned it and now as its running different it needs the throttle reset


so many clean things like this and there was nothing wrong in the first place
Bones126 likes this.
scaramanga is offline  
post #11 of 20 (permalink) Old 26th April 2019, 09:15
Supporter
 
warhawk's Avatar
 
Car: FN1 Turbo, Milano Red
Join Date: 1st January 2017
Location: Athens, Greece GR
Posts: 806
Thanks: 6
Thanked 133 Times in 100 Posts
iTrader: (0)
Quote:
Originally Posted by PaulM-EX View Post
So to follow up from cleaning the throttle body I now have the crappy idle problem which it seems a few others have also suffered. At slow speeds/low revs the car feels like the throttle is slightly stuck open which can cause sudden jerking/kangarooing. It's possible to drive around the issue to a degree but obviously not ideal.

Ever done a job then wish you hadn't bothered? yeah me too.


So I'm faced with the decision to either take it to a garage to sort, or buy a proper diagnostic tool (foxwell or similar) to try and sort it myself.
1) If you ever remove any plug from the engine bay, have your key off the ignition. That's the reason for the CEL. You don't have to disconnect the battery next time.

2) To fix your problem you have to do the "idle relearn" procedure. There are numerous ways to do that. But since you haven't got any dianostic tool the easiest one is to disconnect your battery for 1 minute and then reconnect it. Immediatelly after start the car and let it idle until you hear the radiator fan (this will take a while depending on your current engine temp). When you do, your are good to go.

Problem solved
scaramanga, Bones126 and The_b3st like this.
warhawk is offline  
post #12 of 20 (permalink) Old 27th April 2019, 00:56 Thread Starter
** Thread starter **
 
Join Date: 22nd July 2018
Posts: 72
Thanks: 14
Thanked 8 Times in 8 Posts
iTrader: (0)
Quote:
Originally Posted by warhawk View Post
1) If you ever remove any plug from the engine bay, have your key off the ignition. That's the reason for the CEL. You don't have to disconnect the battery next time.

2) To fix your problem you have to do the "idle relearn" procedure. There are numerous ways to do that. But since you haven't got any dianostic tool the easiest one is to disconnect your battery for 1 minute and then reconnect it. Immediatelly after start the car and let it idle until you hear the radiator fan (this will take a while depending on your current engine temp). When you do, your are good to go.

Problem solved
Will this definitely work though as I've seen numerous posts of people trying the idle relearn procedure and it not making any difference.
PaulM-EX is offline  
post #13 of 20 (permalink) Old 27th April 2019, 01:02 Thread Starter
** Thread starter **
 
Join Date: 22nd July 2018
Posts: 72
Thanks: 14
Thanked 8 Times in 8 Posts
iTrader: (0)
Quote:
Originally Posted by scaramanga View Post
sounds like you've cleaned it and now as its running different it needs the throttle reset


so many clean things like this and there was nothing wrong in the first place
I commented in a post a while back about the car occasionally stuttering under acceleration and somebody replied (plus seen a few other posts saying similar things) saying the throttle body needed cleaning which is why I considered doing it.
PaulM-EX is offline  
post #14 of 20 (permalink) Old 27th April 2019, 11:34
Supporter
 
warhawk's Avatar
 
Car: FN1 Turbo, Milano Red
Join Date: 1st January 2017
Location: Athens, Greece GR
Posts: 806
Thanks: 6
Thanked 133 Times in 100 Posts
iTrader: (0)
Quote:
Originally Posted by PaulM-EX View Post
Will this definitely work though as I've seen numerous posts of people trying the idle relearn procedure and it not making any difference.
Well they might not needed the idle relearn in the first place or they didn't actually managed to do the idle relearn propertly.

For your situation this is 100% your solution and it is very logical that happened. Every time you clean the throttle body the idle relearn is a must!
scaramanga likes this.
warhawk is offline  
post #15 of 20 (permalink) Old 29th April 2019, 22:09 Thread Starter
** Thread starter **
 
Join Date: 22nd July 2018
Posts: 72
Thanks: 14
Thanked 8 Times in 8 Posts
iTrader: (0)
Well I tried the idle relearn procedure as per the above method and it made absolutely zero difference. After a bit of searching on youtube I found a slightly different method which involves disconnecting the battery and then touching the two battery leads together for about 10 seconds. This method made a very small difference but still hasn't completely cured the problem. Also the idle speed now fluctuates from about 800 to 1000rpm every few seconds but the car also now has a weird power drop whilst driving. It feels a bit like dabbing the brake for a couple of seconds even though the throttle is still on.

I've got a diagnostic tool coming this week which I'm hoping will help to remedy things back to how it was beforehand as the car has gone from being a nice place to be, to a pain in the arse and very irritating.

If anyone is thinking about cleaning their throttle body, do yourself a massive favour and leave it well alone.
PaulM-EX is offline  
post #16 of 20 (permalink) Old 30th April 2019, 21:15 Thread Starter
** Thread starter **
 
Join Date: 22nd July 2018
Posts: 72
Thanks: 14
Thanked 8 Times in 8 Posts
iTrader: (0)
Just to add to the list of bugs, I've noticed that the A/C now seems to be a bit temperamental. Sometimes it blows chilled cold air as expected, but other times when I put the A/C on it only blows the same temperature as if it was still off. I recently re-gassed the system (before I cleaned the throttle body) and it seemed all ok.

There's also an occasional loud juddering noise coming from underneath (cant be certain where from exactly) which comes on when sat stationary or very slow moving which is rather concerning. It only lasts a few seconds when it happens and doesn't seem to happen ( so far at least) when moving at normal speeds or higher.

I'm wondering whether this issue is related to the A/C being re-gassed as the car ran absolutely fine for well over 8 months before, without so much as a hint of any noises.
PaulM-EX is offline  
post #17 of 20 (permalink) Old 4th May 2019, 12:20 Thread Starter
** Thread starter **
 
Join Date: 22nd July 2018
Posts: 72
Thanks: 14
Thanked 8 Times in 8 Posts
iTrader: (0)
So hopefully, fingers crossed, I've sorted the crappy idling problem with the help of a Foxwell scanner tool. After reading up on other forums regarding idle problems after cleaning the throttle body it seems that you MUST reset the idle learning values stored in the ECU before doing any sort of idle relearn procedure and the only way to do this is with an appropriate scan tool. If you do not reset, doing the idle relearn alone will make very little or no difference. It seems that if you've done the idle relearn after cleaning the throttle body and thought the car was running ok then the chances are that the throttle body was not far out to begin with.

My car now idles around 700rpm once warmed up and no longer has that surging feeling when coasting down in the lower gears as if the gas pedal is being slightly pressed. As for the other issues I mentioned above I'm guessing they are only related to the A/C system which I will worry about another day. As for now I'm just happy to have sorted the idling.
warhawk and Bones126 like this.
PaulM-EX is offline  
post #18 of 20 (permalink) Old 4th May 2019, 13:21
Supporter
 
Bones126's Avatar
 
Join Date: 25th October 2017
Location: Birmingham
Posts: 1,158
Thanks: 85
Thanked 96 Times in 96 Posts
iTrader: (0)
Garage
Glad youíve got the idle situation sorted, I have a similar issue but was advised I have an air leak somewhere (need to check but donít think I do). But the amount of times Iíve had the throttle body off over the last couple of weeks it may need resetting so same as you may need the tool to reset the TPS. Where did you get yours from?
Cheers
Dave.
Bones126 is offline  
post #19 of 20 (permalink) Old 4th May 2019, 23:08 Thread Starter
** Thread starter **
 
Join Date: 22nd July 2018
Posts: 72
Thanks: 14
Thanked 8 Times in 8 Posts
iTrader: (0)
I bought the Foxwell NT650 off eBay seller allinone18. The 510 model is slightly cheaper but requires the honda specific software adding to it. Money well spent in my opinion.
Bones126 likes this.
PaulM-EX is offline  
post #20 of 20 (permalink) Old 5th May 2019, 10:01
Supporter
 
Bones126's Avatar
 
Join Date: 25th October 2017
Location: Birmingham
Posts: 1,158
Thanks: 85
Thanked 96 Times in 96 Posts
iTrader: (0)
Garage
Quote:
Originally Posted by PaulM-EX View Post
I bought the Foxwell NT650 off eBay seller allinone18. The 510 model is slightly cheaper but requires the honda specific software adding to it. Money well spent in my opinion.
Thanks for letting me know, glad itís done the trick.
PaulM-EX likes this.
Bones126 is offline  
Reply

  Civinfo > 8th Generation Euro Honda Civic (2006 - 2011) > Bugs, faults and irritations (8G)

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Civinfo forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Your User Name is the name that appears by all your posts on the forum, and so should not be your email address.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Faults High drive idle after cleaning throttle body cluise Engines and Transmission (8G) 22 18th July 2017 16:04
Electrics A/C fault with engine management light? Cobra10 Electronics (8G) 35 11th June 2016 08:59
HONDA Fault Codes OBD 2 igor2009 General Discussion (8G) 0 30th December 2014 16:18
Faults Throttle Body housing cleaning advice J4MMY Engines and Transmission (8G) 1 4th October 2010 19:38

Posting Rules  
You may post new threads
You may 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

 
For the best viewing experience please update your browser to Google Chrome