Haynes Forums  

Go Back   Haynes Forums > Haynes Roadster Forums > Engine/transmission
FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
  #11  
Old 15th May 2014, 09:39 PM
Stot's Avatar
Stot Stot is offline
Senior Member
 
Join Date: Nov 2012
Location: Wolverhampton
Posts: 750
Default

Quote:
Originally Posted by Davidbolam View Post
I'm on my 3rd set of leads. I'm going to see what the diagnostic light says tomorrow. The plugs are black so they may need changing but they have only turned black. I did replace the plugs when I put the ending in.

I've just tried to reset the base idle.

David
The last leads I sent you have exactly 2 miles on them and I didnt have a misfire using that coil and lead combo so I think you can rule that out.

I had this problem and sorted it and I am trying to figure out if it was just resetting the base idle that fixed it or If I did something else. Might have been that I had 2 of the loom plugs in the wrong way and it was giving me a solenoid error on the diag LED. The vacuum solenoid has the same plug as something else in that general area and i got them the wrong way round.

Cheers
Stot

Cheers
Stot
__________________
1.6 Mazda B6 : Garrett TBO339 : 420cc WRX Injectors : FMIC : Microsquirt V3 : LC-2 Wideband : Toyota COP
Build Started Jan 2013 : OTR Aug 2014 : Build Pictures
Reply With Quote
  #12  
Old 16th May 2014, 03:26 PM
Davidbolam Davidbolam is offline
Senior Member
 
Join Date: Mar 2011
Location: Gosforth, Newcastle Upon Tyne
Posts: 856
Default

I think my problem may be fixed. I have replaced the plugs, the ecu temperature sensor and also the lambda sensor. Total cost 15 quid. The engine now revs nice and smoothly. I still need to check the ecu for faults as the light didn't turn up in the post. I know there will be one fault on the for the purge valve leading to the carbon canister as this was removed.

Thanks for the help and advice . Fingers crossed it keeps working....
David
__________________
Click to see my build photos on Flikr

http://www.flickr.com/photos/67112582@N03/

Saturn MX5 Based Chassis, Limited Slip Diff & 2.4 Quick Rack.

Build cost.... seems to be spending more on tools than car bits at the moment! (they will be handy in the future though).
Car iva'd and passed 15/08/2014. Finished weight 572kg.
Reply With Quote
  #13  
Old 16th May 2014, 05:06 PM
flyerncle flyerncle is offline
Senior Member
 
Join Date: Mar 2008
Location: gateshead,near cobbly bit of A1 North
Posts: 3,188
Default

Not sure with jap ecu's but vag ones can be reset by taking both batt leads off and clip them together for ten minutes or so.

Will be in the circuit at 17:30 if you are interested.
__________________
Cost : Little as possible.
Thanks : To those who by their generosity my build has progressed.
Its a handmade sports car not a flaming kit car !!!


If at first you dont succeed,avoid skydiving...

No parachute require to freefall,only if you want to do it twice.
Reply With Quote
  #14  
Old 16th May 2014, 06:27 PM
Davidbolam Davidbolam is offline
Senior Member
 
Join Date: Mar 2011
Location: Gosforth, Newcastle Upon Tyne
Posts: 856
Default

I will keep an eye out for you . Are you in a warrior or a trauma hawk? I am presently in Kenton school so probably at the top of your down wind leg if your doing a left hand circuit
__________________
Click to see my build photos on Flikr

http://www.flickr.com/photos/67112582@N03/

Saturn MX5 Based Chassis, Limited Slip Diff & 2.4 Quick Rack.

Build cost.... seems to be spending more on tools than car bits at the moment! (they will be handy in the future though).
Car iva'd and passed 15/08/2014. Finished weight 572kg.
Reply With Quote
  #15  
Old 17th May 2014, 02:29 PM
flyerncle flyerncle is offline
Senior Member
 
Join Date: Mar 2008
Location: gateshead,near cobbly bit of A1 North
Posts: 3,188
Default

Warrior David,not keen on t hawk or cesspit but will fly them if forced too
After 6 when I took off and one circuit rht hand 25 took 25 mins,ready to turn base and got sent 2 miles north to avoid inbound traffic and three others in the circuit due to crosswind.
__________________
Cost : Little as possible.
Thanks : To those who by their generosity my build has progressed.
Its a handmade sports car not a flaming kit car !!!


If at first you dont succeed,avoid skydiving...

No parachute require to freefall,only if you want to do it twice.
Reply With Quote
  #16  
Old 20th May 2014, 10:52 AM
Davidbolam Davidbolam is offline
Senior Member
 
Join Date: Mar 2011
Location: Gosforth, Newcastle Upon Tyne
Posts: 856
Default Its back aghhh

Looks like I still have a missfire......

I have used the diagnostic "Tool", well an LED and I am getting error codes 8 and also 23(i think from memory its 23 - this is the carbon canister which I was expecting as I had removed it.)

Error code 8 means there is a problem with the air flow meter.

I have ordered a replacement from ebay £16 delivered so hopefully this will cure it.

If it doesn't I will have run out of ideas......

David
__________________
Click to see my build photos on Flikr

http://www.flickr.com/photos/67112582@N03/

Saturn MX5 Based Chassis, Limited Slip Diff & 2.4 Quick Rack.

Build cost.... seems to be spending more on tools than car bits at the moment! (they will be handy in the future though).
Car iva'd and passed 15/08/2014. Finished weight 572kg.
Reply With Quote
  #17  
Old 20th May 2014, 07:02 PM
CTWV50's Avatar
CTWV50 CTWV50 is offline
Senior Member
 
Join Date: Aug 2010
Posts: 1,297
Default

Quote:
Originally Posted by Davidbolam View Post
Looks like I still have a missfire......

I have used the diagnostic "Tool", well an LED and I am getting error codes 8 and also 23(i think from memory its 23 - this is the carbon canister which I was expecting as I had removed it.)

Error code 8 means there is a problem with the air flow meter.

I have ordered a replacement from ebay £16 delivered so hopefully this will cure it.

If it doesn't I will have run out of ideas......

David
Could it be a bad earth or a wiring issue to the MAF (airflow meter)?
Reply With Quote
  #18  
Old 20th May 2014, 11:43 PM
Davidbolam Davidbolam is offline
Senior Member
 
Join Date: Mar 2011
Location: Gosforth, Newcastle Upon Tyne
Posts: 856
Default

Quote:
Originally Posted by CTWV50 View Post
Could it be a bad earth or a wiring issue to the MAF (airflow meter)?
I don't think so as there is no error code for the air flow thermistor

David
__________________
Click to see my build photos on Flikr

http://www.flickr.com/photos/67112582@N03/

Saturn MX5 Based Chassis, Limited Slip Diff & 2.4 Quick Rack.

Build cost.... seems to be spending more on tools than car bits at the moment! (they will be handy in the future though).
Car iva'd and passed 15/08/2014. Finished weight 572kg.
Reply With Quote
  #19  
Old 21st May 2014, 10:22 AM
CTWV50's Avatar
CTWV50 CTWV50 is offline
Senior Member
 
Join Date: Aug 2010
Posts: 1,297
Default

Found this on my travels if the new part doesn't solve the issue then maybe this will give you some more ideas. Got my fingers crossed for you.

http://www.aa1car.com/library/misfire.htm
Reply With Quote
  #20  
Old 23rd May 2014, 12:18 AM
Davidbolam Davidbolam is offline
Senior Member
 
Join Date: Mar 2011
Location: Gosforth, Newcastle Upon Tyne
Posts: 856
Default

Quote:
Originally Posted by CTWV50 View Post
Found this on my travels if the new part doesn't solve the issue then maybe this will give you some more ideas. Got my fingers crossed for you.

http://www.aa1car.com/library/misfire.htm
I'm still waiting for the new afm to arrive. In the meantime I decided to get my haynes manual out! Totally forgot to look in there...

I have tested the resistance of the potentiometer in the afm and it's bust. There is no movement on the multimeter until it is fully open. The fuel pump switch operates as soon as it is opened.

The thermistor also seems to be not giving a reading.

I have had a good "dismantling session" in the kitchen tonight and think this must be the cause of the problems.

Ie when the throttle is opened there is no change in the fuel supply causing it to miss and the thermistor is most likely confusing the situation as well (without the ecu knowing as there was no error code showing for this)

Let's hope Hermes turn up tomorrow with my parcel!

David
__________________
Click to see my build photos on Flikr

http://www.flickr.com/photos/67112582@N03/

Saturn MX5 Based Chassis, Limited Slip Diff & 2.4 Quick Rack.

Build cost.... seems to be spending more on tools than car bits at the moment! (they will be handy in the future though).
Car iva'd and passed 15/08/2014. Finished weight 572kg.
Reply With Quote
Reply


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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT +1. The time now is 12:36 AM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.