Hi,
Got the G40 running fine enough when driving about now.
However i still have two last problems! :(
The car when stationary seems to idle fine. However if i hold the revs at say 2k for example, the revs hunt up and down between 1.5k and 2.5k (not exactly but you get the idea). Also seems to do this when actually driving along sometimes? Although not 100% sure if i just imagine that,lol. This problem occurs when cold and warm.
Second problem, when pulling away or even just touching the throttle when stationary the car seems to hesitate? Kinda like a flat spot maybe? like i touch throttle ever so slightly and the revs fall (hasnt stalled doing this yet) then raise back up. Can also make the car do this if i put the throttle down slightly really fast, car juders about. Its very tempremental and is on and off when it fells like it. This problem also seems to occur when cold and warm.
Could these problems be related?
I've tried to explain the problems the best i can, but sorry if its all a little vauge :(
I've replaced the leads and blue temp sensor so far. Neither made any difference.
The car in general seems to drive very smooth, its just these two problems!
Any ideas? Things to replace which could be causing this problem?
Thanks
Leon
you checked the dizzy timing?
ye i have something like this but myn gets beta wen warm bt still ther slightly, my next step is to check the dizzy timing like u say.
i will let ya no if it makes any difference hopefully guna giv it a go at weekend
bloody hate text type!
dito
I hate spam ;) So lets keep it on topic please, cheers!
I had a similar sort of problem, a friend of mine said it sounds like something called pinking. I turned my dizzy further 'anti clockwise' and it is much better, it no longer hunts, or sits at high revs when idling, but does seem slightly delayed reaction on acceleration so I think it needs some final fine adjustments. Have a look, if the dizzy is too far 'clockwise' then just spin it back little bits at a time, it wont damage anything. Process of elimination. It is a pain in the ass though.
So your ignition timing is ok ? Voltage from alternator ?
Have you gone through the diagnostic guide that hayesey put in the FAQ ?
Quote from: goosyganger on September 16, 2009, 08:02:02 PM
I had a similar sort of problem, a friend of mine said it sounds like something called pinking. I turned my dizzy further 'anti clockwise' and it is much better, it no longer hunts, or sits at high revs when idling, but does seem slightly delayed reaction on acceleration so I think it needs some final fine adjustments. Have a look, if the dizzy is too far 'clockwise' then just spin it back little bits at a time, it wont damage anything. Process of elimination. It is a pain in the ass though.
or perhaps you could set it with a timing light!?!
Quote from: PeteG40 on September 17, 2009, 08:13:38 AM
Quote from: goosyganger on September 16, 2009, 08:02:02 PM
I had a similar sort of problem, a friend of mine said it sounds like something called pinking. I turned my dizzy further 'anti clockwise' and it is much better, it no longer hunts, or sits at high revs when idling, but does seem slightly delayed reaction on acceleration so I think it needs some final fine adjustments. Have a look, if the dizzy is too far 'clockwise' then just spin it back little bits at a time, it wont damage anything. Process of elimination. It is a pain in the ass though.
or perhaps you could set it with a timing light!?!
yeah I have but havent been able to get any of my mates round to help me use it to set it up, and its a bit hopeless when you dont know how. but once it she is finally happy ill get it sorted.
Going to get the timing checked and if needed sorted then i'll let you guys know what happens! :)
Update: Timing is fine, problem still occurs?
I had the same problem and eventually took the lambda probe off and it ran a lot better, due to fit a new one this week.
Also tried about a million others things ... changing alternator, testing and fixing a few problems on the ECU, all new earth leads. Hope you get it sorted, I know from experience it's soooooooooo annoying
Quote from: jimbugalee on October 05, 2009, 08:50:43 AM
I had the same problem and eventually took the lambda probe off and it ran a lot better, due to fit a new one this week.
Also tried about a million others things ... changing alternator, testing and fixing a few problems on the ECU, all new earth leads. Hope you get it sorted, I know from experience it's soooooooooo annoying
Let me know how it goes with the new one...
Removed standard air intake, air box, filter etc... today and replaced it with a Jabbasport kit. Took it for a wee drive and the car seems to be alot smoother. Didn't hesitate or anything, havn't checked to see if it still hunts revs yet.
Engine was warm/hot though so will wait till later when its stone cold and take for another drive to see if this problem has been eliminated.
Any ideas on why changing the induction for a Jabbasport one could have fixed the problem? Seems very strange!
Will confirm later if problem is solved
Thanks
EDIT: PROBLEM STILL OCCURS
if yr old paper filter was fecked maybe
Nah doubt it, looked pretty clean!
Edit: False alarm :( Problem is NOT fixed...Rah
oh no Leon. I've just spent months trying to sort this problem out. Mine is now fine with new lamba probe :) Can't believe that's all it was but it may have been a combination of everything I tried.
Hm...Unplugged my lamba today and not to sure if it made much difference. But i think it did, didnt seem to hunt revs as much. I'll just buy a new one and see if it sorts it :) Were did you purchase yours from and at what cost?
Cheers
Direct from VW ... think they're about £120 tho booooooooooooooo
Update on mine .... stalled again this morning with new lamba probe so still runs better with it completely off but it is better with a new one. Think my mechanic is getting a tad annoyed now hehe
Hmm...Unplugged mine and drove around for abit and the rev hunting defo improved, didnt seem to be 100% gone but is 99% better! Any ideas on if its safe to run the car without the probe? Does it cause any problems?
Also a faulty probe could be the cause of over fueling correct?
I'll be ordering a Bosch one from Eurocarparts today me thinks :)
Cheers
Anyone got any ideas why it would run 100% better with lamba probe off and with new one on it is improved but still hunts and stalls (mostly when cold)?
Quote from: jimbugalee on October 11, 2009, 05:35:12 PM
Anyone got any ideas why it would run 100% better with lamba probe off and with new one on it is improved but still hunts and stalls (mostly when cold)?
Maybe its the actual wire/plug that connects the lamba sensor plug into the ECU (or whatever it goes to)
PhilJ and tucker checked it ???
when on idel does it cut out?
check the blue temp sensor, i changed mine recently it was all gunked! runs much better now