| Author |
Message |
Tom Richards
Goo Roo
nsw
V8
Posts: 1919
Reg: 08-2005
|
scott, MOST important: to change the timing belt, the leads to the disti are disconnected. Make sure they are replaced in the correct order before moving on to the timing. |
Scott Vim
DieHard
Vic
Soarer (1uz) Chaser (1jz)
Posts: 974
Reg: 12-2010
|
Yep checked correct firing order. |
Peter Nitschke
Junk Filterer
South Australia
UZZ30 UZZ31
Posts: 12678
Reg: 11-2004
|
Possible ECU issue. Do you have a piggy back ECU also? |
Scott Vim
DieHard
Vic
Soarer (1uz) Chaser (1jz)
Posts: 975
Reg: 12-2010
|
Yes emanage ultimate. |
Tom Richards
Goo Roo
nsw
V8
Posts: 1920
Reg: 08-2005
|
i am not sure if a timing light will pick up if the timing is 1 tooth out??
I think you need to physically check. |
Scott Vim
DieHard
Vic
Soarer (1uz) Chaser (1jz)
Posts: 978
Reg: 12-2010
|
Does anyone know if the timing gun is the ultimate thing or won't it pick up on being out by 1 tooth? |
Robert Day
DieHard
victoria
v8 & TT
Posts: 772
Reg: 01-2007
|
Its been a while since I studied my V8 but I'm almost a 100% sure there is no camshaft position sensors, so the only position taken for the computer is from the crank & so the timing marks using a timing light will not change, so it has to be a physical check only to check the camshaft timing, nothing else will cause it to show up .. |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 2486
Reg: 03-2007
|
V8 has 2 cam position sensors , and engine will run one tooth out ,
|
Tom Richards
Goo Roo
nsw
V8
Posts: 1921
Reg: 08-2005
|
in daves photo above, you can see harm balancer on TDC (0') an don the drivers side disti, the rotor pointing to the mark. Mark is not visible on the LHS disti.
Timing light is powered from #1 cylinder. It could show as correct, but other side is out by 1 tooth. Physically check as per daves photo is the way to go. You will go in circles if you do not ensure this is not the fault. |
Scott Vim
DieHard
Vic
Soarer (1uz) Chaser (1jz)
Posts: 980
Reg: 12-2010
|
OK but wouldn't it be consistently bad rather then my issue runs like a dog cold (barely drivable) and as it warms up becomes good under 3,000rpm. Yesterday I used it for some hardcore towing and kept the car at 2,000rpm the whole time. So much torque. Love my Soarer. I will need help with TDC if anyone is in Melbourne or if there is a good tute. I have the covers off already. Guessing I have to turn the harmonic balancer with a racket until it reaches 0 and check marks on both side but not 100% sure exactly. |
Robert Day
DieHard
victoria
v8 & TT
Posts: 774
Reg: 01-2007
|
Roughly where about's are you Scott .. |
Tom Richards
Goo Roo
nsw
V8
Posts: 1922
Reg: 08-2005
|
scott, put a socket on the harm balance bolt, and just pull it around in the normal direction until the marks line up. then look at the rotor alignment |
Scott Vim
DieHard
Vic
Soarer (1uz) Chaser (1jz)
Posts: 981
Reg: 12-2010
|
I'm in hurstbridge |
Scott Vim
DieHard
Vic
Soarer (1uz) Chaser (1jz)
Posts: 992
Reg: 12-2010
|
OK I changed the leads today and the problem is no better. Maybe slightly better idle but still same symptoms. Is worse when cold and warm is OK until 3,000rpm. WOT is a bad idea- misfires and has no power. So its looking more like timing belt off on one side. Should I just take it back to them or should I confirm this (or check it) before bringing the car to them? |
John Street
TryHard
NSW
VE Calais V8, 2009 Saab 9-3 Turbo
Posts: 456
Reg: 08-2005
|
Scott,I had the same problem with my last Soarer,it will be one camshaft one tooth out as Tom said.If you want to have a go at fixing it yourself, this is what I did.
Wind the motor to TDC check rotor buttons against marks on dizzies.Mine was the passenger side cam out by one tooth. Mark on the belt where rotor should point ,remove rotors and dizzie bodies replace rotor that is misaligned.
Clamp timing belt to cam pulley that is aligned correctly- spring loaded multigrip will do,
Undo cambelt tensioner, walk misaligned cam under loosened belt so rotor points to correct mark.Replace tensioner, remove clamp, replace parts, should be good. |
Scott Vim
DieHard
Vic
Soarer (1uz) Chaser (1jz)
Posts: 993
Reg: 12-2010
|
First I would like to confirm that this is the issue. The bottom cam covers I've never removed. Guessing its a few bolts. Any hidden ones or hard to get to? I think I tried removing one of these once and I took quite a few bolts out. Looked like it should have come off but wouldn't. I was able to change the caps without taking off the cover so I just put it back together. Wouldn't do it that way again though. When I confirm this is the problem I will go from there. Will be pretty crook if this is the problem. Isn't this the whole point of paying someone to change the timing belt! |
John Street
TryHard
NSW
VE Calais V8, 2009 Saab 9-3 Turbo
Posts: 457
Reg: 08-2005
|
Best bet would be to get a pic of the bottom covers if someone has a pair to see where the lugs are.
My car started fine ,started missing around 3000 RPM |
Scott Vim
DieHard
Vic
Soarer (1uz) Chaser (1jz)
Posts: 994
Reg: 12-2010
|
So John how come I have to remove the rotors? Can't I just loosen the belt and move the can one tooth and tighten the belt? |
John Street
TryHard
NSW
VE Calais V8, 2009 Saab 9-3 Turbo
Posts: 458
Reg: 08-2005
|
You have to remove dizzie body and rotor on the side you clamp |
John Street
TryHard
NSW
VE Calais V8, 2009 Saab 9-3 Turbo
Posts: 459
Reg: 08-2005
|
Also I,m telling you how I did it not how to do it you can change any part of the process you wish. |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 2499
Reg: 03-2007
|
Scott , 99.9 % its a tooth out , i have seen this happen before, not taken in to account the slack the tensioner would take up when lining up an unmarked belt . the garage should redo this for you free . |
Robert Day
DieHard
victoria
v8 & TT
Posts: 778
Reg: 01-2007
|
Hi Scott,
No need to pull the bottom covers off yet to just check the Cam timing, pulling off the distributor caps will see if the marks are lining up on the rotor buttons & DON'T start accusing the mechanics until you have double checked that that is the problem, then you can go to town if you want too, but also if you want them to fix it you need to hold back a bit otherwise other things could happen ?? |
Dave Rose
Goo Roo
wa
UZZ31 / ML320 CDI
Posts: 2500
Reg: 03-2007
|
this may help you check it, crank on TDC , see the way the rotors line up with the marks on housing.
|
Tom Richards
Goo Roo
nsw
V8
Posts: 1940
Reg: 08-2005
|
scott a few of us have been saying, "physically check the timing" for 2 wks. You need to "bite the bullet" and check it as it is the most likely cause of your fault. You are wasting your time with other less likely things. If it is the fault, the mechanic is responsible to fix it free of charge.
As dave has said, when the tensioner is released, it can take up 1 tooth. When i do this job, after releasing the tensioner, i pull the engine around a couple of times, then recheck the alignment at the rotors and TDC, not once, not twice, but 3 times, as an error here is many hrs work to rectify. |
Scott Vim
DieHard
Vic
Soarer (1uz) Chaser (1jz)
Posts: 996
Reg: 12-2010
|
Have been in the process of moving. Am onto it next couple of days. |
Previous
