Are you madabout kit cars      
 "We've Got Kit Cars Covered" Information about Madabout-Kitcars.com Contact Madabout-Kitcars.com         Home of UK kit cars - madabout-kitcars.com Various kit car write ups All the latest kit car news Kit car related and general discussion

Search
Manufacturers
Kit Cars
Kit Car Data sheets
Picture Gallery
SVA Knowledgebase
Clubs & Communities
Build cost estimator
Kit cars for sale
Knowledge Base 
KitcarUSA.com
Classic-Kitcars.com
 

Go Back   Madabout Kitcars Forum > Mad Build Area > Marlin 5exi builds

Marlin 5exi builds Calling all you sexi builders....sorry 5exi builders, show us your progress.

Reply
 
Thread Tools Display Modes
  #1  
Old 26th July 2012, 15:18
MadDogMoggy's Avatar
MadDogMoggy MadDogMoggy is offline
Senior Member
Enthusiast
 
Join Date: Feb 2008
Location: Dorset
Posts: 107
MadDogMoggy is on a distinguished road
Default Hondata Error - 2nd 02 Heater

Hi All,

Engine rewired and re-plumbed now (Honda K20A2).

Had some issues with error codes on the Hondata system. Turns out I had a broken wire going to the ECT sensor which is now fixed.

I now have errors for the 2nd O2 sensor - I've cured the one for the sender by switching it off in the software, but it still reports an error for the heater for the 2nd o2 sensor and illuminates the MIL.

Any ideas how to cure this? (short of unplugging the MIL!)

Thanks
Tim
Reply With Quote
Available from eBay
  #2  
Old 27th July 2012, 16:53
eaa53's Avatar
eaa53 eaa53 is offline
Senior Member
Enthusiast
 
Join Date: Nov 2007
Location: Somerset
Posts: 232
eaa53 is on a distinguished road
Default

It is taken for granted that the sensor is a good one! ie swapped the 1st and 2nd over and still have the same problem?

If no cat is fitted between them the second sensor may be trying to tell you the cat is not working, good of it to notice.

You can buy lambda sensor eliminators if the reason that the sensor is giving a true and realistic message that you do not want to see.

The other technical alternative is Technical Topics (www.techtopics.co.uk) Bridgwater, James will know what its telling you and likely how to fix it, once its hooked up to his kit that is.

JohnC

Last edited by eaa53; 27th July 2012 at 16:54.. Reason: Capitalisation
Reply With Quote
  #3  
Old 27th July 2012, 17:40
MadDogMoggy's Avatar
MadDogMoggy MadDogMoggy is offline
Senior Member
Enthusiast
 
Join Date: Feb 2008
Location: Dorset
Posts: 107
MadDogMoggy is on a distinguished road
Default

Thanks for the info, but the problem's not with a sensor - the sensor isn't attached.

The Hondata system allows you to set it so that the 2nd O2 sensor doesn't throw up an error (as there is no sensor it does this) but doesn't allow you to turn off the error generated by the 2nd O2 sensor heater not functioning (because it isn't there!)

My system has a pre-cat O2 sensor which is rigged up as the primary sensor (or Air/Fuel Ratio Sensor) but no post-cat sensor.

I know others have set up their systems with Hondata and wondered how they got over this?

Thanks again
Tim
Reply With Quote
  #4  
Old 29th July 2012, 10:44
alackofspeed's Avatar
alackofspeed alackofspeed is offline
Senior Member
Enthusiast
 
Join Date: Jul 2005
Location: Dorset
Posts: 1,180
alackofspeed is on a distinguished road
Default

I haven't fitted a second sensor, and it is disabled in hondata. No error.

What have you got selected in the 'misc' tab? should be nothing in ecu options area.
Reply With Quote
  #5  
Old 29th July 2012, 19:38
MadDogMoggy's Avatar
MadDogMoggy MadDogMoggy is offline
Senior Member
Enthusiast
 
Join Date: Feb 2008
Location: Dorset
Posts: 107
MadDogMoggy is on a distinguished road
Default

I'm running the latest software version (3.1.2 I think).

Under Misc/ECU there are four options:

Immobilizer enabled
OBDII
Purge system
ELD

Apart from Purge they are all off (OBDII being the one that disables the secondary O2 sensor). Choosing this stopped errors about the Secondary O2 Sensor voltage, but not for the Secondary o2 Heater malfunction (which I assumed it would as if you have no sensor you have no heater for it!).

I'll turn off purge if that's working on your system.

Thanks for the info - I may try turning OBDII back on then off again and see if that works.

Tim
Reply With Quote
  #6  
Old 8th August 2012, 22:25
alackofspeed's Avatar
alackofspeed alackofspeed is offline
Senior Member
Enthusiast
 
Join Date: Jul 2005
Location: Dorset
Posts: 1,180
alackofspeed is on a distinguished road
Default

Any progress?

Presume you're trying to capitalise on some free time during the school holidays. My recollection is you're not far from Dorchester, so I could pop over with my car one evening and compare ECU settings.
Reply With Quote
  #7  
Old 9th August 2012, 23:39
MadDogMoggy's Avatar
MadDogMoggy MadDogMoggy is offline
Senior Member
Enthusiast
 
Join Date: Feb 2008
Location: Dorset
Posts: 107
MadDogMoggy is on a distinguished road
Default

Not played with ECU as I've had to reinstall everything onto the laptop I was using to run the Hondata software - hoping to give it a go tomorrow!

I've also read somewhere about fitting a resistor to one of the ecu pins to mimic a heater, but this may be specific to American ECUs.

I'd welcome the chance to have another chat and look at your car, and to see how your ecu is set up. I'm about 3 miles outside of Dorch, and you'd be welcome to pop round anytime you fancy giving your car a quick blast.

Dad and I have been trying to get as much work done as possible over the hols so far. Starting to see the light at the end of the tunnel!

Cheers
Tim
Reply With Quote
  #8  
Old 9th August 2012, 23:53
alackofspeed's Avatar
alackofspeed alackofspeed is offline
Senior Member
Enthusiast
 
Join Date: Jul 2005
Location: Dorset
Posts: 1,180
alackofspeed is on a distinguished road
Default

Righto. I'm away until the 20th, but could pop by after that. I'll drop you a PM nearer the time.
Reply With Quote
  #9  
Old 10th August 2012, 17:56
MadDogMoggy's Avatar
MadDogMoggy MadDogMoggy is offline
Senior Member
Enthusiast
 
Join Date: Feb 2008
Location: Dorset
Posts: 107
MadDogMoggy is on a distinguished road
Default

Brilliant - look forward to hearing from you.

Reflashed ECU today and it cured the secondary O2 problem, but primary O2 now occasionally comes up with a low voltage error. When cleared its ok for a minute or two then comes back!
Reply With Quote
  #10  
Old 15th August 2012, 22:40
Ric H Ric H is offline
Senior Member
Enthusiast
 
Join Date: Sep 2006
Location: Cheshire
Posts: 184
Ric H is on a distinguished road
Default

Glad you got the sec O2 error fixed. My experience is reflashes cure all sorts of ills! I get the occasional primary O2 error. My own experience is it tends to be a poor connection. Not sure of my facts here, but I suspect the O2 signal wire may be at pretty low voltage and may be most prone to error due to high resistance at connections.
Reply With Quote
  #11  
Old 15th August 2012, 23:53
MadDogMoggy's Avatar
MadDogMoggy MadDogMoggy is offline
Senior Member
Enthusiast
 
Join Date: Feb 2008
Location: Dorset
Posts: 107
MadDogMoggy is on a distinguished road
Default

Cheers Ric - I'll look into that. The sensor has a 'waterproof' plug fitted to it (which is one of those make it up yourself jobbies) so that may well be the problem.

Thanks for the tip

Tim
Reply With Quote
  #12  
Old 4th October 2012, 20:03
alackofspeed's Avatar
alackofspeed alackofspeed is offline
Senior Member
Enthusiast
 
Join Date: Jul 2005
Location: Dorset
Posts: 1,180
alackofspeed is on a distinguished road
Default

I have recently changed to the latest version of Hondata and have no warning lights. I've also developed a calibration which as appreciably improved my engine's driveability and power.

You are welcome to a copy of the calibration. If we get a decent weekend in the near future I am still interested in a run down to view your build.

Cheers,
John.
Reply With Quote
  #13  
Old 10th October 2012, 10:00
MadDogMoggy's Avatar
MadDogMoggy MadDogMoggy is offline
Senior Member
Enthusiast
 
Join Date: Feb 2008
Location: Dorset
Posts: 107
MadDogMoggy is on a distinguished road
Default

Hi John,

In the throws of trying to get the car ready for IVA at the end of the month. Screen in, wiper and washers fitted. Just fiddly bits and bodywork tidying mainly, but ECU light occasionally comes on so a visit would be most welcome!

Cheers
Tim
Reply With Quote
  #14  
Old 19th October 2012, 21:56
alackofspeed's Avatar
alackofspeed alackofspeed is offline
Senior Member
Enthusiast
 
Join Date: Jul 2005
Location: Dorset
Posts: 1,180
alackofspeed is on a distinguished road
Default

Oops, I failed to spot the last message.

By all means phone me (I'll send a PM with the number), and we can arrange. Weather looks suitable this weekend, and Sunday is feasible for me.
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

Forum Jump


All times are GMT +0. The time now is 06:38.

copyright madabout-kitcars.com 2000-2020
terms and conditions | privacy policy