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Location:
goldy coast
Registered:
September 2004
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4age timing acting a fool
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Tue, 31 May 2005 11:24
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Yes I have done a search
On my rwd 4age it has/had a miss at idle, so I whipped out the timing light and shorted the correct plug to set my timing.
Only to find out that when I short the plug that it doesn’t change the timing to where it should, the timing doesn’t move with the plug shorted or not. I have contacted some of the 4age guru's I know of and they have no idea. So im leaving it to the toymods community. I have been told it could be the computer or ignitor messing around. The problem started when I removed my air con setup out of the sprinter
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Location:
Bundaberg, Qld.
Registered:
May 2002
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Re: 4age timing acting a fool
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Tue, 31 May 2005 22:10
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maybe you could try shorting out the T pin to earth at the ECU. the E1 in the diagnositcs plug is just an earth.
or even useing a multimeter check continuity between E1 and an earth and the T to the ECU, just to make sure there are no breakages in the wires etc.
though i wouldnt not normaly suspect timing to be a cause of a miss.. ?
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Location:
goldy coast
Registered:
September 2004
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Re: 4age timing acting a fool
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Tue, 31 May 2005 22:44
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well shorting the T pin does have an affect because the check engine codes start to come up, but does not put the timing on a fixed 15-16 btdc. Also when playing around with the dizzy i got it to stop missing.
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Location:
Bundaberg, Qld.
Registered:
May 2002
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Re: 4age timing acting a fool
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Tue, 31 May 2005 23:09
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when setting the base timing with all accessories off and the T & E1 jumped the timing should be at 10 degrees @ ~900 rpm, not 15-16 degrees. it should jump to ~15-16 degrees once you pull the jumper wire from the T & E1 pins.
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Location:
goldy coast
Registered:
September 2004
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Re: 4age timing acting a fool
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Tue, 31 May 2005 23:53
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yeh well in any case it was sitting at 50-60deg with or with out plug shorted. Now it is at 20-30 and seems to be running fine... when i set it to 15 it went no where, was like driving a truck
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Location:
goldy coast
Registered:
September 2004
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Re: 4age timing acting a fool
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Wed, 01 June 2005 08:23
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Any other ideas from anyone? If not who knows of a good 4age mechanic in the SE Queensland area? besides option1 or anothy kellam
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Location:
sydney
Registered:
March 2003
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Re: 4age timing acting a fool
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Wed, 01 June 2005 10:18
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make sure the tps is set right
if not set right at idle it will stuff up the timing at idle
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Location:
goldy coast
Registered:
September 2004
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Re: 4age timing acting a fool
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Wed, 01 June 2005 10:25
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that could be it as the tps isnt even connected.... Was told it woudnt affect it but im guessing im wrong. Thanks, any other ideas?
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Location:
Rockhampton QLD
Registered:
July 2004
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Re: 4age timing acting a fool
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Wed, 01 June 2005 10:54
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| mikes86 wrote on Wed, 01 June 2005 09:53 |
yeh well in any case it was sitting at 50-60deg with or with out plug shorted. Now it is at 20-30 and seems to be running fine... when i set it to 15 it went no where, was like driving a truck
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i have this problem too, i got a new tps but havent checked the timing again yet(havent been home) its not pinging so it cant be too bad.
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Location:
goldy coast
Registered:
September 2004
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Re: 4age timing acting a fool
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Wed, 01 June 2005 11:03
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yeh havent connected my tps yet, because i changed over my throttle body and its a different plug. But yeh motor is running fine not pingin its just the timing mark isnt where its meant to be and shorting the timing plug has no effect.
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Location:
sydney
Registered:
March 2003
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Re: 4age timing acting a fool
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Wed, 01 June 2005 11:55
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well the ecu doesnt realise the tps is closed so i think it wont set base idle timing
had this prob on a customers car
took ages to find out why timing was advanced or retarded 40 or 50 degrees at idle
it was tps was mis adjusted
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Location:
goldy coast
Registered:
September 2004
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Re: 4age timing acting a fool
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Wed, 01 June 2005 19:17
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yep well that settles it, thanks alot for all your help. 
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