does a 84 gti have a internal "transfer fuel pump"? along with the external or does it have just an external?
thanks in advance
Put your hand on the relay when you turn on the key, you should feel it click over. If it doesnt then 99% chance the relay is dead. Could be ignition switch, but doubtful. You can also jumper the relay to put power to the pump directly to test if the pump is bad or not.
give me a min for the pics. sorry its 3 pics crappy cell phone and mag light
It's on the top row, I think it's the furthert one on the left.
If you have the new one from GAP just pull it and look at the terminals to compare. It's the only relay in your system that will look like it.
i just replaced the spark plugs, cap and rotor, now fp relay. had the timing done and timing belt re tensioned and ignition reset from a mechanic. i have a feeling there is still something not right.. i still have the fp in the mail from cali to see if that helps, but what are the odds that the fp is working but not 100% ?
and fyi, i took apart the old relay and it seems to be newer, couldn't see any physical issues as i thought i would have.
alldata and GAP said one.. but i thought they were both wrong. so i guess there right?
i just found the fuel tank hose to the pump looked a lil kicked, changed that, shot my eye with gas, wasnt fun. and i just got the fp in the mail and didnt install it. i took it for a ride..seemed the same. but she starts. also twice i didnt hear the pump prime. so maybe the pump is on its way out. still gota swap out the new pump. starting to think itsa a clutch but i dont see how when its like 2 months old.
IIRC, the USA Rabbits did NOT prime the pump when set to the on position. The pump will only crank when the starter is actuated, or the car is running.
All 1985-up cars did the fuel pump primer through the relay. So, lets forget about that possibliity as a cause of this problem.
Let's ask a more-relevant question: when was the last time you replaced your fuel filter? Water turns to ice when it gets cold outside, the last time I checked. Your filter could be freezing with water that's now-commonplace with this **** Ethanol gas we're forced to use. I'd start there, and then do the fuel pressure tests as outlined in the Bentley manual. If you don't own a Bentley manual, and you plan on keeping this car for the foreseeable future, then spend $200 on the following:
1) Bentley Manual ($20-50 used)
2) Fuel pressure tester (KD tools makes a nice one for about $80-100)
3) Multi-tester with dwell function (about $40-60 at Radio Shack, or Autozone sells a nice one in their electronic tools section).
Well, I musta forgot. My last two Rabbit gassers were both 81 and 82 Caddys. Neither primed the pump, and it was an annoying feature to not have it (especially when they'd drain pressure back to the tank overnight). I'm guessing is a CIS-O2 feature, and not a CIS-Basic feature. 1982 was the last year for most CIS-Basic. 1983 Pickups had gone to the CIS-O2. So, I stand corrected.
Very easy check for tank pump: expose the fuel sender by removing the round plate in seat base and if THREE wires in the sender plug, then have a pump in there. Also supposed to be a larger gas tank. VW changed over in mid year 1984.
Not in the 1980-84 Bentley manual including schematics.
Last edited by MacGruber; 05-03-2011 at 01:46 PM.