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Registered:
March 2003
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gze idle problem
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Wed, 21 May 2003 21:31
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the idle is not ok it keeps cutting out or rev up n down all the time the computer is not tuned up yet could this b the problem or do i have an air leak somewhere? can u fix this problem thru your ecu (mtx)
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Location:
Canberra
Registered:
May 2002
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Re: gze idle problem
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Wed, 21 May 2003 22:17
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You might have an air bubble in your cooling system.
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Location:
Sydney
Registered:
June 2002
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Re: gze idle problem
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Thu, 22 May 2003 00:25
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Don't know whether this will help, but I had the same problem in a blue top 4AGE. I managed to trace it the oil that I was using. So now I don't recommend Valvoline to anyone!
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Location:
sydney
Registered:
May 2003
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Re: gze idle problem
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Thu, 22 May 2003 00:26
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Id go and get it tuned first.
U may even find the problem at the workshop.
good luck.
P.S. lemmie know the results.
vr4gsr.
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Location:
Brisbane
Registered:
May 2002
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Re: gze idle problem
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Thu, 22 May 2003 04:30
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yeah, i'd get it tuned first, it will make a big difference!!!
And Valvoline??? I wouldn't recommend it, they use to many filler in there oil, i've heard of some engine not making it past 50,000 k's on Valvoline!!!
I use Castrol GTX2 or 3.
Cheer Nilezy
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Location:
MELBOURNE
Registered:
May 2002
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Re: gze idle problem
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Thu, 22 May 2003 05:23
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Sprinter boy, have you got the standard intercooler, piping etc. If you have a larger intercooler and piping as I do, the tuning will make no difference. Mine did the same thing on the standard computer and the Haltech and no matter what I did nothing worked. Zero throttle maps, different idle control motors, anti-stall valves, different tuners, no luck and I can assure you I have no leaks. Does it cut out when you rev it then let it come back down to an idle? I have had this problem for years and I've finally solved it. If your problems sound similar PM me and I'll send you some photos of howto fix
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Registered:
March 2003
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Re: gze idle problem
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Thu, 22 May 2003 05:47
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yes it sounds familiar, whern i start is it will rev for a few seconds then it will start to idle low and eventually it will cut of when i start it again it will rev up then go back down and cut of when i rev it between 1 and 2 rpm the rev is not cdonstant it will just rev up and down above 3 rpm the rev is constant i dont think i have any boost leaks as well pls help dude thanx
i have microtech ecu and supra front mount and 2.5 inch piping
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Location:
Coffs
Registered:
May 2002
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Re: gze idle problem
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Thu, 22 May 2003 05:47
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I think its a pretty common problem for a 4ag to have...there's always someone on here saying they have a idle problem with there 4ag.
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Location:
MELBOURNE
Registered:
May 2002
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Re: gze idle problem
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Thu, 22 May 2003 08:49
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This is not just a small idle problem it is a real pain! Makes the car almost impossible to drive. I've been told by many experts that it is the tuning but this is not true. If I bypass the intercooler, put a hose from charger to intake runs fine. Is this the case with yours Sprinterboy?
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Location:
Bundaberg, Qld.
Registered:
May 2002
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Re: gze idle problem
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Thu, 22 May 2003 09:52
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 i would drain and refill your cooling system, do all the proper 'bleed' techniques to ensure you dont have air in the system.
also check you TPS settings.
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Location:
MELBOURNE
Registered:
May 2002
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Re: gze idle problem
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Thu, 22 May 2003 10:05
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Remember he is not running standard computer. I took out all my coolant compensation maps out with no change!
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Location:
The Central Coast
Registered:
October 2002
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Location:
cambo
Registered:
May 2002
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Re: gze idle problem
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Tue, 03 June 2003 07:01
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air in coolant or no muffler will not do it for those who think air in coolant will im sure it wont, as ive started and ran cars without coolant many times (for a very short period of time mind you).
one question i ask you is do you have an aftermarket pulley on the supercharger? if so it probably means your no longer running a clutch therefor the supercharger is always on making it VERY difficult to obtain a good idle even with aftermarket computer as this is the case with my car, it still doesnt idle when cold.
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Location:
was adelaide now newcastle
Registered:
February 2003
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Re: gze idle problem
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Tue, 03 June 2003 09:33
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from experience i always find that idle problems ( in particulr hunting) can/are cause by dirty throttle bodies, take it off and clean it really well in all it's internal air galleries this has solved several of my idle problems
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Location:
Sydney
Registered:
May 2003
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Re: gze idle problem
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Tue, 03 June 2003 14:08
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i got the same problem with my ze as well and i got a pully kit and front mount intercooler as well it is a pain to start in the morning doesnt idel dies in the ass all the time it is a pain to drive on the street esp when ya in tarffic is always dies once it gets warmed up it ant to bad but it pisses me off and has for the last 2 yrs pls any1 help me with this problem it would b great.
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Location:
The Central Coast
Registered:
October 2002
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Re: gze idle problem
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Tue, 03 June 2003 22:42
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Good idea JDM hachi! I'll be pulling mine appart and cleaning it all out, and cleaning all the sensors too.
And no EVOSTi, I'm running a bog stock GZE with a 135mm pulley (not by choice, that'll change soon) I see your point about running a different s/c pulley, but it wouldn't make any difference running a different crank pulley would it?
I'll let you guys know if cleaning the throttle body out has any effect on how it runs.
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Location:
Sydney
Registered:
May 2003
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Re: gze idle problem
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Tue, 03 June 2003 23:46
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sprocket it wont been there done that doesnt make a difference
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Location:
The Central Coast
Registered:
October 2002
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Re: gze idle problem
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Tue, 03 June 2003 23:53
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??? That sucks.
Maybe I'll try and get the error codes out of the ECU and go from there.
I do know it used to run pretty good a year ago. Maybe somethings rattled loose.
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Location:
Sydney
Registered:
May 2003
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Re: gze idle problem
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Wed, 04 June 2003 00:06
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Hey mate from what i know and have heard all gze's that have a pully kit and front mount have this idel problem i got my car done by BD4'S motorsports and after 2yrs they problems hasnt been fixed yet  the only down side to conversion that i have done that i can c
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Location:
The Central Coast
Registered:
October 2002
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Re: gze idle problem
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Wed, 04 June 2003 00:44
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I reckon we should all run round our motors with a can of WD40 and spray on every conceivable joint and pipe and see if that has any effect.
On a lighter side, I was taking the gearbox out last night, and holding up the motor by the engine hook near the intercooler, as I was getting the hoist to take the weight, I heard that distinctive sound of metal fins being crushed by the hook.
So lets hope I didn't poke a hold in my intercooler! (Fingers crossed!)
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Location:
was adelaide now newcastle
Registered:
February 2003
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Re: gze idle problem
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Wed, 04 June 2003 02:18
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if your car ran well before, and now it doesn't it looks to be the throttle body, like i said before it solved my problem, idle control cant work if the internal galleries (which are alternately open and shut by the idle control solenoid) are blocked. im willing to bet FLYNSX a sixpack on this one!, i have an evo lancer front mount and 12psi pulley, with the standard map sensor computer, it now runs fine.
to properly clean the throttle body you must take it off the engine, the reason it gets dirty is through all the crank case blow by gases entering the inlet before the throttle, carrying with it a bit of oil, this oil will build up and eventually block internal passages casusing the affore mentioned idle problem. good luck.
matt.
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Location:
Sydney
Registered:
May 2003
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Re: gze idle problem
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Wed, 04 June 2003 03:13
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your in newcastle matt care to help me with this problem iam in newwie as well this idelis pissing me off hardcore 
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Location:
The Central Coast
Registered:
October 2002
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Re: gze idle problem
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Wed, 04 June 2003 03:50
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So what do you clean it with? Degreaser? noooo...!
What about metho, or kero, or thinners? Or how about wax and grease remover?
Hmmmm....any suggestions?
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Location:
was adelaide now newcastle
Registered:
February 2003
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Re: gze idle problem
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Wed, 04 June 2003 04:40
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try using "carbie and throttle body cleaner" can get it at most auto parts stores, believe me guys if this doesn't fix the prob well... i owe some one a six pack 
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Location:
MELBOURNE
Registered:
May 2002
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Re: gze idle problem
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Wed, 04 June 2003 09:30
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I wish you bet me a six pack as I bought a new throttle body and no change. It's got to do with intake piping diameter and length. Maybe my problem was not the same as all you guys as my intercooler is a bit too large but whatever you've mentioned in this thread and more I've tried it with no luck.
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Location:
Sydney
Registered:
May 2003
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Re: gze idle problem
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Wed, 04 June 2003 13:18
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hey JDM mate u owe me a six pack i pulled it all apart 2day didnt do shit 
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Location:
The Central Coast
Registered:
October 2002
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Re: gze idle problem
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Wed, 04 June 2003 23:51
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I used to think weird idling problems came from small manifold vacuum leaks.
I'm yet to actually find out if that is the cause of misbehaving EFI motors, but I read a magazine article that some guy swears blind that you can track these things down with a can of WD40 to try and find even the smallest vacuum leak.
after finding the leak, all it requires a new gasket.
FLYNSX, have you tried replacing yall our manifold and intake gaskets? Or do you think the problem is to do with your front mount intercooler only?
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Location:
Sydney
Registered:
May 2003
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Re: gze idle problem
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Thu, 05 June 2003 03:48
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you get the email from damo if u did iam going to try what he said yer i think it is front mount problem because when i got a split in one of the rubber joins on the intercooler pipe the idel was fine:) i fixed the split and the idel stuffed up again
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Location:
cambo
Registered:
May 2002
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Re: gze idle problem
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Thu, 05 June 2003 07:15
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what i said in regards to upgraded pulley was only relevant if it was a pulley on the supercharger, not crank. as far as i know a bigger crank pulley shouldnt affect idle.
cleaning the throttle body is a good idea as the do tend to get full of oil on gze's quite easy.
and about leaks around the manifold, this would only be relevant if you are running a AFM gze. if your running map sensor, having an air leak SHOLDNT make any difference wahtsoever as it hasnt read the air intake yet as it does it in the manifold.
with different intercoolers and the like i cant really comment on that i spose it could affect idle although i cant see how.
those of you running front mounts on sprinters can someone please send me some pics!? preferably of the piping exiting the supercharger or the pipes going past the radiator (if still using a stock radiator). im still having trouble workimg out how to do mine!
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Location:
MELBOURNE
Registered:
May 2002
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Re: gze idle problem
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Thu, 05 June 2003 10:04
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Flynsx I've got a flange with pipe welded to it to suit a gze throttle body which you can place directly onto the intake manifold when you remove the intercooler piping. Unplug the supercharger and start it up. If it idles (which I'm SURE it will) then you can rule out tuning etc etc. If you need it let me know and I'll send it to you
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