| Author |
Message |
Eldin Didic
TryHard
NSW
UZZ30 V8
Posts: 134
Reg: 07-2005
|
This is a bit of a weird one. I've searched the forum with no luck on finding a similar problem. Although the warning message i get might be relevant to the problem.
Last week I was driving down the road and this annoying van was speeding up and cut in front of me, kind of gave me the sh!ts so i stepped on it and overtook him, but going ridiculously fast. I come to a set of lights and the car just decided to stop. It literally turned off. I tried turning it over time and time again with no luck. Finally figured out that I'd need to leave me foot on the gas a little for it to start. The car drives fine, but will turn off when the rpm drops and the car is idling at a set of lights or depending on the speed in a turn it will turn off. This could have dire effects if the car decided to turn off during a turn making me lose the power steering, plummeting into a pole or what have you.
The car does remain on if I place my foot on the throttle keeping the rpm's above 800. Once removing the throttle again the car will turn off. So i find myself driving with both feet, left for braking and right for constant throttle so it doesn't turn off. I guess at first the sneaking suspicion was bad fuel but i quickly ruled this out as I had done 300+km on the same tank prior the problem arising. One other issue was remaining fuel filter. Could the filter not be allowing enough fuel into the engine hence throttle forcing fuel into the engine and not allowing it to drop/turn off?
As earlier stated I am getting the electrical engine fault display message come up on my dash, could this be relevant to this issue?
Cheers,
Eldin |
James Johnson
DieHard
Victoria
JZZ30
Posts: 586
Reg: 07-2005
|
fuel ecu??
mums v8 used to cut out on idle at the lights and when starting up it would stay on for a sec then clunk out. replaced the ecu and it has been fine ever since! |
Daniel Clarke
Goo Roo
NSW
TT 2.5L 6 cylinder
Posts: 1382
Reg: 03-2006
|
Fuel ECU. Try the Fuel ECU Bypass... Search and try that! Common problem. |
Daniel Clarke
Goo Roo
NSW
TT 2.5L 6 cylinder
Posts: 1383
Reg: 03-2006
|
Hahaha Pretty good thinking James  |
Eldin Didic
TryHard
NSW
UZZ30 V8
Posts: 136
Reg: 07-2005
|
Thanks.
I've tried this using a hair pin, not sure if it would conduct like a paper clip would but it did not seem to resolve the issue. Might have to try tomorrow with a paper clip though. Upon removing the diagnostics cover i noticed that all the ports on the header were covered/flled with this fine residue. Kind of like melted car wax/polish that you would use. Grease like substance. I know it's only a diagnostics port, but could this have anything to do with the problem? Also removed the plastic ends from the hair pin, but didn't think it made a difference.
Cheers. |
Leon Wright
DieHard
WA
V8 UZZ31
Posts: 526
Reg: 08-2006
|
The residue is an anti-corrosive, perfectly normal. Try a paper clip or piece of wire, unsure of the conductivity of a a hair clip  |
Peter Nitschke
JunkFilterer
South Australia
GT4.0 V8
Posts: 7105
Reg: 11-2004
|
I think hair clips have a protective plastic coating. |
Leon Wright
DieHard
WA
V8 UZZ31
Posts: 527
Reg: 08-2006
|
Any hair clip users care to do a conductivity test for us  |
Eldin Didic
TryHard
NSW
UZZ30 V8
Posts: 138
Reg: 07-2005
|
lol.. well it was late last night at home and had no paper clips.. so I thought i'd give it a shot, my sister insisted that it would be ok. i laughed and gave it a shot, had nothing to lose. So now I have a bunch of paper clips which I will be using to further test once work in finished for the day. Looked at the hair pin/clip and it didn't seem to have any plastic coating, although it was coated in a bronzy metallic paint. Anyhow, give the paper clip a shot tonight. |
Mike Bradberry
TryHard
Queensland
V8 UnLimited
Posts: 493
Reg: 07-2005
|
The bronzy coloured coating definitely is like an insulator. |
Eldin Didic
TryHard
NSW
UZZ30 V8
Posts: 139
Reg: 07-2005
|
i used a paper clip. i could hear the fuel running into the engine when the position was on. although it did not appear to correct the problem. car continued to turn off under 700rpm.
any other ideas? i do not think it is the fuel pump ecu. |
James Johnson
DieHard
Victoria
JZZ30
Posts: 588
Reg: 07-2005
|
as i said a replacement fuel ecu. |
Eldin Didic
TryHard
NSW
UZZ30 V8
Posts: 140
Reg: 07-2005
|
excuse my ignorance, but i thought the fuel ecu bypass was a diagnostics step in order to determine wether or not the ecu is the problem or not. hence supplying a constant line of fuel to the injectors?
correct me if i am wrong, i was under the understanding that this was the case. so if bypassing the fuel ecu and providing constant fuel, and it is still having a problem, would this then not bring u to the conclusion that it is not an ecu issue?
Cheers. =) |
James Johnson
DieHard
Victoria
JZZ30
Posts: 590
Reg: 07-2005
|
i guess but still could'nt hurt to replace the ecu if your out of any other ideas.
just has all the symptoms of a fuel ecu. |
Andrew Ferres
DieHard
WA
'86 Cressida V8, '84 Soarer V8, '90 C-F Celsior V8
Posts: 586
Reg: 07-2005
|
Your thoughts are correct Eldin.
If you used a paperclip, and you could hear the fuel in the rails with the key ON and the engine not running, and it did not fix the problem when you started it, then the fuel ecu is not the cause (thats not to say its in perfect condition, its just saying its not causing this problem).
And when the fuel ecu in mine died, even using the throttle would not keep it running.
Eldin, next step would be to remove the ISCV and clean it. Also clean the inside of the throttle body out.
There should be a tutorial somewhere for these. |
Eldin Didic
TryHard
NSW
UZZ30 V8
Posts: 141
Reg: 07-2005
|
James: Well I guess it would be an OK option if I was rich and had money to throw trying to diagnose a problem, even then, I would have taken it to a mechanic and not wasted my time (if I had money to throw). =) I would prefer not to throw away 300$ just trying to solve an issue, and not knowing if it will fix it. I would not hurt me, but would hurt my pocket! 
Andrew: Thanks mate. Will give this a shot tonight after work. Your a champion.
Cheers. |
Ryan Posselt
TryHard
NSW
Celsior V8
Posts: 140
Reg: 08-2006
|
any thoughts on a possible dead alternator....
i.e at less than 700rpm the alternator isn't providing enough charge but above 700rpm the charge picks up enough to keep the car running.
please laugh if i'm an idiot |
Andrew Ferres
DieHard
WA
'86 Cressida V8, '84 Soarer V8, '90 C-F Celsior V8
Posts: 587
Reg: 07-2005
|
Unless the battery is nearly flat, a motor shouldn't stall when an alternator dies. |
Chaminda Menikpura
Tinkerer
NSW
GT L V8
Posts: 52
Reg: 08-2006
|
Try this link http://soarercentral.com/sc-forum/messages/67/31585.html?1134295910
Bridge B+ & Fp in the diag conector in the engine bay.
If car does not play up..Fuel ECU
Actually this is what Neil Griffiths the expert from Rush Imports said. Also he will post the Fuel ECU for Au$300.
Furthermore he said "Fuel ECU is located behind left rear cover under window..
Remove both sections of rear seat,,then the side cover,,ECU is hanging there"
I recommend he is the guy...plus great help...
Hope this would help you.
~ |
Peter Nitschke
JunkFilterer
South Australia
GT4.0 V8
Posts: 7120
Reg: 11-2004
|
As Andrew said, battery runs the car, alternator charges the battery. |
Gary Nimmo
TryHard
WA
V8 Supercharged & intercooled
Posts: 216
Reg: 07-2005
|
I replaced my Fuel pump Computer 2 nights ago
Turn the key idols perfect
Doesnt shut down when starting all good
I used to have to give it a little rev when starting Not now fixed that problem |
Chaminda Menikpura
Tinkerer
NSW
GT L V8
Posts: 53
Reg: 08-2006
|
Hey Gary Can you post some photos of the Interior? and have you done all the modifications that you mentioned? WOW sounds perfect.
Did you Replace the Fuel ECU by your self and can it be repaired?
~ |
Andrew Ferres
DieHard
WA
'86 Cressida V8, '84 Soarer V8, '90 C-F Celsior V8
Posts: 588
Reg: 07-2005
|
Fuel ECU replacement takes about 15minutes and can be done with basic tools (screwdriver, spanner).
I'm sure there is a tutorial on planetsoarer for it. |
Gary Nimmo
TryHard
WA
V8 Supercharged & intercooled
Posts: 217
Reg: 07-2005
|
Here you go
|
Darryn Dewar
DieHard
Gisborne
UZZ30 Soarer
Posts: 660
Reg: 09-2005
|
Eldin Didic wrote on Tuesday, February 27, 2007 - 08:28 pm:As earlier stated I am getting the electrical engine fault display message come up on my dash, could this be relevant to this issue?
Have you run diagnostics?? |
Andrew Ferres
DieHard
WA
'86 Cressida V8, '84 Soarer V8, '90 C-F Celsior V8
Posts: 589
Reg: 07-2005
|
I think the electrical warning comes on whenever the RPM drops below a certain amount (200rpm or so) and the key is still ON. |
Eldin Didic
TryHard
NSW
UZZ30 V8
Posts: 142
Reg: 07-2005
|
Problem fixed. Don't know how but it seemed to have fixed itself. I don't know what is up with these cars, but they seem to fix themselves up. I just hope it does not happen again, driving since saturday no hiccups. Car idles perfect and no turning off. |
Chaminda Menikpura
Tinkerer
NSW
GT L V8
Posts: 54
Reg: 08-2006
|
WOW mine still playing up. What happened was; I parked my car out side and it was heavily lightning and raining. After it stoped I started the car and noticed the fuel indicator was blinking. However that problem disappeared from the next day and didn't happen that yet, but my Fuel ECU got damaged and idles starts playing up since then.
I think there's something to do with the lightning and may be it damage the electronics. ??????
ELDIN...Have you forgotten to undo the bridge between B+ and FP? and after how many days you got this problem solved?
May be my V8 can't think and solve the problems by itself..:-)
ZEEE |
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