does anyone know if there is a wiring diagram for the VAF so i can see if some wires could possibly be cross or something like that and just to make sure the wires are going to the right place ?
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Was just skimming through and saw this, i've had this issue before, just not on the same car, but, have you checked your fuel pressure at the rail? You could have a dead pump or clogged filter and the only way you can get enough fuel for the car to run is for the ecu to make the injector duty really high, since high injector duty at a very low pressure is the same as low injector duty at a higher pressure, to an extent.
Hope this helps.Comment
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As stated, it doesn't look to be the vaf. What other part of the car you worked on after you shut it down the last time it ran?Comment
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none i think i just put an axles in and out and i did have to hit the axles a couple of times to get them to go in so there might have been vibration from that to some part of the motor? idk i worked on it today and it started a couple of times and stayed started at REAL low rpms and it was shaking but it wasn't dying. Also a note this is running on the b8 ecu, if i put in the bp09 ecu (i have 2 i tried both) the car doesnt even stay running unless u open the throttle or open the vaf flap. Today while turning the car on a couple of times i heard a noise it was like a constant beeeeeeep noise and it would go away then come back. After a while it stopped doing it, it would happen everytime, iono where it was coming fromComment
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check the spark plug wires if they are in the correct position, check your timing too. did you try adjusting your idle?....Comment
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thanks ill have to give this a shot so i should check the fuel filter ? i think the fuel pump is good because i have fuel at the fuel rail and stuff so i dont see why the fuel pump wont workOriginally posted by Mr. FC3S View PostComment
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yeah i tried adjusting the idle nothing the car is just shaking at low rpms, i had brand new plugsi just put in to see if they helped, cranked it a couple times ddid same thing start for half sec and dead. took plugs out black . totally black real quick, i guess ill check the FPR or fuel filter or something?Originally posted by miK3Pro View PostComment
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It's shaking because it's pig rich. Did you try the B8 VAF with the B8 ECU? It should run fine at idle at least. check that the spark plugs fire: take them out of the engine, connect to the plug wires and put them standing on the valve cover with the edge touching the valve cover. Ask somebody to crank and check that you get a spark at all 4 of them (disconnect the injectors to avoid flooding the engine). Also, rotate the disty towards the firewall just a bit past the middle, just to advance the timing a bit. Actually, try that first.Comment
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also check ground wires to the motor and trans
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how can i make sure the fuel filter isnt clogged and where is the ground on the trans?Comment
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and i didnt get to try to b8 vaf yet and ill check the plugs but first ill to advance the timing a bit.Originally posted by 323driver View PostComment
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all i did was walk to the gas station after i shut it off and get some gas in a gas container and walked back to my shop threw it in there then worked on the axle i believe. then i tried starting it later started back firing and then it just stopped startinng really. you think i might have a clogged filter? how can i check that or should i just go ahead and replace it anyway`Comment
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ok so today i changed the fuel filter, and i removed the exhaust from the downpipe because i had a feeling my cat is clogged cuz exhaust pipe is getting too hot. the car started up and ran great, i threw some tires on and actually got to take her around the block real quickly for a spin! but now i need to get either a new exhaust or a cat, then i should be pretty much set to go, something still needs to be fixed with the steeringComment
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ook so now the car drives and all with the b8 ecu but if i put a bp ecu in the car will idle but i cant seem to get it to rev or anything, if i press the gas it just dies or if it does rev when the revs drop the car just about sounds like its going to die, idk what to doComment
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Which VAF are you using? The car won't run properly if you're using a SOHC VAF with a BP ECU.Comment
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