Possible fuel pump / filter problemo.....

[Cobez]

Hey guys!!

Went out to leave for work this morning, went to crank the Senator over, she turned over but no start. Was turning over fine as it always does, fuel pump was priming buzzing whatever you want to call it, but just wouldn't turn over.

So i took the battery and alternator out of the equation, i hooked up another ignition module, no joy. Got mum to crank it over while i thumped the side of the fuel tank. Nothing. Let it sit for a few minutes then cranked her over again and finally she started.

I filled her up last night and kinda of overfilled her, the needle on the fuel guage was up as far as it could go (up above the "full" notch), but i didn't think overfilling could be anything to do with it. Does this sound like the pump is on it's way out, or does anything think there might have just been a bit of crap stuck in the filter working it's way through?

It had a major service, dizzy cap, rotor button and fuel filter done about 3 months ago and is run ONLY on BP 98ron.


Thanks guys

[ephect]

im thinking a dodgy relay, possibly the one for spark.. u've ruled out most of the other stuff. if you can swap your horn relay for the ignition one, and see if it sorts out ur prob mate

[Cobez]

Really? Hmm i'll try that. 2 second job can't hurt to try!

[ephect]

yea i remember a similar problem not too long ago, and that member did the same stuff n it ended up being the relay

[Cobez]

Where the hell do you buy new Bosch relays anyway? Just from Repco or something?

[ephect]

yea repco or supercrap

[Cobez]

Sweet, might just invest in some new ones anyway. Can't hurt to replace them all even if they aren't the problem.

[ephect]

did that fix your prob? or u'll monitor it over the next few days?

[Cobez]

Dunno, if it happens again i'll try that for sure. It started up fine after work. If it happens again tomorrow morning i'll give it a shot

[kopper69]

Holden carry them too at a reasonable price. If you can hear the pump priming I dont think it would have anything to do with the pump or the power to the pump (including the relays). More likely to be a lack of spark or flooding.

[Cobez]

That's weird, the plugs and leads were done not long ago. Maybe the ignition module is on it's way out?????

[-=ApheX=-]

hey mate i personally don't feel that it's the relay, i mean as you can hear the pump buzzing away there it shouldn't be an issue..
before you crank over your car, do you hear the pump buzz for a second or so then stop? if so it's primed and good to go...
I feel that maybe overfilling your tank could have cause this issue as there was no amount of pressure in the tank after filling... failing that wouldn;t hurt to get a hold of a new fuel filter also...
have you checked your error codes to see if there's something going wrong? maybe a crankangle sensor problem?

[rcnugget]

I always fill mine upto the top of the filler neck lol is this a bad thing ?

[undar8ed1]

I`d go with the fuel situation, you probably won`t the problem again if don`t overfill.

[hsvpunk]

igniton coil coby....... same problem as stocky.

[stocky]

igniton coil coby....... same problem as stocky.

oi i was about to say that. yeah check your coil. mine was a tiny crack that caused it to earth out and lose spark. it was fine once the car got going, apart from a few stalls, but when it was sitting still it would struggle. car took forever to start. it would turn over and over, with my foot down on the accelerator, and only rarely would it finally kick in, run rich, blow out all unused fuel, and then start running reasonably ok. new coil cost me $50 from the autospares store near your place. repco, bursons, etc were all out of bosch coils, so i got a champion one

[Cobez]

Yeah but the thing is when mine started up, it wasn't running rich and ****, just turned over and started normally.

Weird, i'm hoping it was just some crap in the filter or the retarded immobiliser playing funny buggers. It been running as sweet as a nut since yesterday. Starts no worries.

[vnv8driver]

cobez this happened to the vq every once in a while, exactly how you described it except sometimes i would be driving then it would cut out, then 15 minutes later it would start first go. i replaced the igniter, hall effect sensor & coil and it never happened again, dont know which one but i suspected the ignition module as they can be very tempromental when they start to grow old.

just my 2 cents worth

[vnv8driver]

also do not bother with 2nd hand modules ever go brand new, they might appear to be in fully working condition but its more like a 50/50 chance they have a fault.

[Cobez]

Sweet cheers man, it's probably a good idea to make a list and just replace all the niggly bits anyway, even if they aren't rooted, just to save me the hassle later on.

Buying a 2nd hand ignition module off Reaper next week, i'll get it reco'd and keep it aside.

[vnv8driver]

go on ebay theres a guy that resolders the points which become dry causing them to screw up, cost about 45 bucks from memory, or even ask a sparky in your area and say you got a quote for 45 and if he can match it

At least you werent driving home right after getting a shift kit installed, got a bit sideways around afew corners then kink out on a main road that has been known to have cars bottled, i wasnt leaving my car there ill tell you that much but luckily it started shortly afterwards !!

[Cobez]

Ok just cranked her over again, she turns over and over and over, then slows down and gets slower and slower turning over then won't turn over at all.

Let it sit for a minute, try it again, does the same thing. Sound like the battery?

[hsvpunk]

battery.
My sisters nugget did it too. called racv twice within 4days. he said it was 'fine'. the 2nd time he came out, i ended up going and buying a battery thru geoff.

[Cobez]

Nah, turns out it's the ignition coil. **** it, the car is just going to have to sit in the garage until i can find a coil. Bosch are having a supply problem, Auto Spares near mine are out, Holden are closed till monday.

[kopper69]

Just for reference, you can test the coil pack using a multimeter on the resistance scale. You measure the primary and secondary resistances. Gregorys has the specs. You can normally spot the faulty one. Still sounds weird. A coil pack will stop one, maybe two cylinders not to fire. Other cylinders should fire and the car should start, but run really rough. Who said it is the coils?