Wednesday, May 24, 2006 - 10:50 pm, by: Cristian Gruber(Cgru2)
OK to cut a long story short, my car came from the panel beaters and now it starts fine but after about 30seconds starts dieing off then dies off.
Now the car sat at the panel beaters with a dead empty tank of petrol for 2 weeks. I've got about 15L of petrol in it now.
If I run wires straight from the battery to the fuel pump connections behind the back seat, it runs fine but hesitates when i suddently step on it.
If I run the fuel pump on its original wires coming from the boot(where the tank is), the car seems to bog down, and if I suddently step on it ... it dies! It also seems to bog down more when when suspension pump is on, or headlights are on, etc. Then dies off.
It seems to me like there is something that controls how much current goes to the pump, and that something is gone or going soon.
Thursday, May 25, 2006 - 06:49 pm, by: Freeman Tang(Cobra_man)
check your terminal connections for coolant temp sender, that's vital for the ecu to know if the engine is cold or not and if it should switch to closed loop.
also check all other electric connections, like TPS, air flow meter etc.
Friday, May 26, 2006 - 07:26 pm, by: Freeman Tang(Cobra_man)
I dont't think it is fuel related. Sounds like an electrical fault from your earlier description, eg. timing, ignition. When you suddenly open the throttle, if the timing is upset, eg. the TPS has moved even just a bit from its original position, the engine will not rev up quickly and you will feel it has a miss.
Let's see, you start it up. Cold start is fine, but 30 seconds later, as the car warms up, it will start to lean off the mixture. The ecu needs all the signals from all the vital engine sensors to determine what AF ratio. But during the first 30 seconds when the car is dead cold, if you step on the gas quickly, is it ok to rev?
OK, now Air Flow meter is checked, but make sure the wires for it is ok too. Also look at the TPS sensor's position, coolant temperature sender terminal and their wires. Also check all the ignition leads are connected properly at both ends and no damages. Their conditions are vital for the engine to rev up when you want it to.
I changed the fuel-pump. The problem is still there!
I also got my old furl pump pressure tested today, and its working perfect! (Anyone want to buy it?)
What the •••• could it be? With the engine running, I disconnected the main fuel line in the engine bay, and theres heaps of fuel going into the engine. But amazingly there is nothing coming out of the return line(which I also disconnected).
I did the OBD and there are no faults returned!
Any more ideeas?
Neil Griffiths Trader NSW I have MORE Soarers than Hayden :-)
Sunday, May 28, 2006 - 04:45 pm, by: Neil Griffiths(Aussiesc)
If nothing from return line... Pressure Regulator. ( No return fuel means to much fuel sitting above injectors ) Which can also cause flat spot on throttle and die.
Flat spot on throttle... Possably water in Throttle Position Switch. ( Was engine washed ? )
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