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Location:
Brisbane
Registered:
November 2003
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GZE Probs
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Sun, 29 August 2004 11:08
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I'm having a few probs with my GZE in my Sprinter. First the idle. It idles at about 1500-2000rpm with the idle screw right down and the idle speed motor unplugged. It goes even higher with this hooked up. It doesn't have any air leaks in the system.
Secondly the timing. I have it set at 10deg BTDC at the idle that I have but when i rev it, it doesn't move. Should it advance or retard or something?
I have been getting code 12 out of my diag plug which is RPM signal. I have tried a different computer and also have rewired the CAS to the computer, not through the loom, and it hasnt changed at all. Could the CAS be stuffed?
Any help is greatly appreciated.
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Location:
Rosanna, Melb
Registered:
June 2002
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Re: GZE Probs
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Sun, 29 August 2004 11:44
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You can check that the pickups in the CAS are as close as humanly possible to the spinning wheel thing (without touching it of course). Can put the CAS drive sprocket in a power drill and check on a CRO that you are getting a good output from every wire. Then maybe check that a good signal is being received at the ECU, again with a CRO.
And as for the high idle, there are a bunch of bypass holes in the throttle body that bypass air around the throttle plate. Including the two hoses that stick out horizontally on the drivers side. I ended up just plugging these 2 connections, improved things, although I run aftermarket management.
Good luck
Hen
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Location:
Brisbane
Registered:
November 2003
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Re: GZE Probs
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Sun, 29 August 2004 22:21
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Thankyou.
I will be checking the CAS tomorrow. Although I have already checked the pickups and they are pretty close.
I have the bypass holes plugged as well and also the idle does go down if I turn the plug on top of the idle speed motor. I have it turned alll the way towards the TB but still idles really high.
Anyone know about the timing on these? What they should advance or retard to?
Thanks
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Location:
Brisbane
Registered:
November 2003
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Re: GZE Probs
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Mon, 30 August 2004 03:55
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Ok, just went and pulled the plug off the ACV and the idle went down a bit more to 1200rpm. Any ideas on this? Also, is it bad not to have the ACV hooked up?
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Location:
Adelaide
Registered:
February 2004
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Re: GZE Probs
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Mon, 30 August 2004 06:02
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for the code problem, try taking out the fuse for 1min, then put it back in and see if the problem is still there, this will reset the system as the code will stay in the computer until you do this.
For the idle, i dont know about in your case but i know in my mr2 it's normal for the engine to idle at about 15-1800 until the engine is warm, it is a warming up procedure for the engine, don't know if that will apply in your case though, but it might help 
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Location:
Brisbane
Registered:
November 2003
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Re: GZE Probs
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Tue, 31 August 2004 05:22
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Thanks for the suggestions. Keep them coming  . I have been disconnecting the battery everytime I try something to reset the ecu but then after a bit of driving good old code 12 pops back up. With the idle speed motor hooked up the idle is high then comes down to above normal when warmed up. But with it disconnected it just stays high - 1200rpm. Anyone?
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Location:
brisvegas
Registered:
August 2004
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Re: GZE Probs
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Tue, 31 August 2004 05:33
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are all the i/c and s/c pipes secure? also those 2 horizontal vaccume pipes from the throttle body, block them off seperatly, don't 'link' them together.. by linking them it's telling the engine to idle higher because the pwr steering pump is in use (slight fluctuation in factory setups) i had a problem with mine hunting between 1500-500-stall! i just replaced it with a 3S-GE throttle body, blocked off all the lines, and ran a 12v 5mm vaccume solenoid below the throttle for cold starts, and it fixed that problem, and gave it a dyno proven 9rwhp! with better a/f mix top end
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Location:
Brisbane
Registered:
November 2003
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Re: GZE Probs
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Tue, 31 August 2004 08:50
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Hmmm. I actually have those 2 vacume pipes linked. I will block them separatly tomorrow. Thanks for that. Anyone know about the timing on these?
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Location:
Newcastle NSW
Registered:
June 2002
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Re: GZE Probs
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Tue, 31 August 2004 09:11
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drift86levin - what are you using to controll the solenoid? a swith on the dash or a temperature switch? im having issues with the cold start on my GZE with 3S throttle
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Location:
Brisbane
Registered:
February 2003
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Re: GZE Probs
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Tue, 31 August 2004 09:13
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| 86sp wrote on Tue, 31 August 2004 18:50 |
Hmmm. I actually have those 2 vacume pipes linked. I will block them separatly tomorrow. Thanks for that. Anyone know about the timing on these?
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Can someone throw up a pic of these please?
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Location:
nsw
Registered:
May 2003
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Re: GZE Probs
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Tue, 31 August 2004 11:03
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I too always had a very high idle till i blocked off the two lines on the back of the throttle body.
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Location:
Rosanna, Melb
Registered:
June 2002
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Re: GZE Probs
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Tue, 31 August 2004 14:09
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These are the two lines I was talking about. They are the ones that disappear off the bottom of the screen.
Dug this pic up off an old post, thanks GZEtrueno.
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Location:
Brisbane
Registered:
February 2003
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Location:
brisvegas
Registered:
August 2004
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Location:
Brisbane
Registered:
November 2003
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Re: GZE Probs
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Thu, 02 September 2004 09:05
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Ok. Blocked them separatly and hooked everything back up but idle is still hunting around the 1200-1500rpm mark. This is actually heaps better than it was. A friend of mine is checking out the electrics and thinks it may be the plug going into the computer. All the other wiring "seems" to be ok. Any info on the timing?
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Location:
Brisbane
Registered:
February 2003
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Re: GZE Probs
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Thu, 02 September 2004 11:21
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Damn, I thought this might have been an easy fix for my little idling troubles, but alas, they were already seperately plugged.
Just looked like they were linked, but when I went to remove either end, i felt a ball bearing in the middle
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