audi a3 1.8t (non quattro) idle problems [Archive] - Audi Forums

: audi a3 1.8t (non quattro) idle problems


Ish
09-01-2009, 11:47 AM
Hi all.I got a 2000 W reg 1.8t non quattro and i got some idle problems.The car runs sweet all the time but whenever im on a standstill ie at the lights, it dips to 500revs and goes back to normal within a split second. doesnt cause much hassle but want to know what the problem is. been told that its probably an idle control sensor or worse still the ecu :( can anyone offer any suggestions for me at this frustrating time??!! cheers.

ClubsportA3
09-01-2009, 05:16 PM
Could be many things best get on a computer and check for fault codes. Do you have a "chav valve" sorry dump valve. Could try a run with the MAF unpluged see if it still does it.

Ish
09-03-2009, 11:06 AM
Nope dont have a "chav valve" :lol: i thought that was the answer i was gonna get.first i thought it could be the TB, took it apart and gave it a thorough clean, but no luck.anyway a friend of mine has vag.com but is in china on a business trip, when he gets back ill tell him to hook my car up to it. cheers m8

ClubsportA3
09-03-2009, 11:22 AM
Has it been remapped or decated :confused:

Ish
09-05-2009, 06:36 AM
nope, totally standard. was thinking of remapping to 180bhp but dont know if its a sensible and reliable thing to do. Whats your opinion on remapping?? will i need to change things ie brakes, intake etc etc or could i leave it at just a remap??:confused:

ClubsportA3
09-05-2009, 10:37 AM
Have a read of this

Tuning advice tips and article for the Audi 1.8T engine (http://www.torquecars.com/audi/18T-tuning.php)

:D

Ish
09-06-2009, 05:35 AM
cheers m8. there's some really good information in that link. maybe a thorough clean of the MAF might be a good idea and an oil and oil filter change could be a sensible start.

ClubsportA3
09-06-2009, 05:40 AM
Careful when cleaning maf as they are about 100 lol
Oil crutial I've seen problem with the pickup then oil starvation ends up not good lol :eek:

ClubsportA3
09-06-2009, 05:45 AM
Oh I use Castrol EDGE 5W30 for my quattro and A6 both 1.8t and Castrol Magnatec for the A3 1.6

Ish
09-07-2009, 12:08 PM
thanx bud, ill make sure im really careful, i change my oil every 6months and a change is due in a few weeks so will invest in some of that oil. could i use any type of oil with that grade or is the one u recommended the best.
(cost really isnt an issue, just want to know what i should/shouldnt use)

ClubsportA3
09-07-2009, 12:14 PM
"Hornets nest"
:eek:
I dont go by cost due to the fact its going to cheaper than a engine :)
I go by what works for me ive never had any problems I change 3k - 4k with genuine filters depending on how its used many will argue the fact and oil type but I tend to go with what has worked for me.

End of the day how much is your engine worth to you

A3Lee
09-19-2009, 02:36 AM
Right i had exactly that problem.If i bliped the revs on idle,it would struggle to settle back down.So, i got a carb cleaner and really cleaned out the throttle body.i then cleaned the air temp sensor on the intercooler pipe (with petrol) thats just after the throttle body at the front of the engine bay,reset the ecu and runs better that ever.Hope this helps.

jaimesonlee
09-19-2009, 11:40 AM
Sounds like you may need to perform a throttle body adaption. Did you get the problem fixed?

A3Lee
09-19-2009, 02:14 PM
Sounds like you may need to perform a throttle body adaption. Did you get the problem fixed?

Whats a throttle body adaption?