20 valve Problem. ST

[Jorrs]

ok, 20 valve silvertop, in AE101 rolla,
two weeks ago, it started to hesitate, and sorta miss a lil bit every so often, then on monday it really started to do it, and make the car die, and unable to drive, not letting it rev and so forth, like a fuel starvation,
didnt do it yesterday at all, then today it did it again, was unable to drive the car really, kept dying, had to creep around to get it home, it sort of hesitates and jumpes and is a real pain.
last week, i put fuel cleaner through it, so i thought perhaps the filter was clogged, so changed fuel filter this arvo, cleaned the TBs a lil bit,
the filter was dirty but not the worse id seen, it still continued to play up, and then just then i drove it a good 5kms, got sum differnt fuel put it through it, and it hasnt played up ?
i was thinking perhaps, fuel pump ? injectors ?
but perhaps it was a bad batch of fuel, and there is water in the tank, so morrow i will put metho into the tank, and also watch it and see if she plays up again.
any thoughts ? or similiar experiences ?
it really was like a fuel starvation, i did run it till it was empty and put a few Liters into it just then and it was ok, so thats where the bad fuel thought is coming from, it was BP fuel, maybe they watered it down.

[30psi 4agte]

Std ecu or aftermarket ??

[Jorrs]

standard, ive had it now for a few months and havent really had any problems, till the last few weeks with this issue.

id say the standard ae101 fuel pump would be enough for the Silvertop also ?
if the fuel pump was on its way out, would these be considred symptoms ?

[Escy]

Mine was doing this, turns out some capacitors had leaked in the ECU. Mine was running rich rather than lean, but it was extreme to the point where it wasn't running long enough to show many signs.

[30psi 4agte]

yeah man if the pump is on its way out it can cause these probs. If it starts dong it giving the tank a clout with a rubber mallet (near the pump) may cause it to run good again if its the pump.

This is a bit of a diag for a stuffed pump. ...... doesnt always work though.

There reason i asked about the ecu was that i had a similar prob and it turned out to the be the injector power wire join was loose causing intermitten fueling

Is it missing on all cylinders ? or just one ?
Does it only miss when you are driving or can you be staionary and it will still do it ?


I guess we need to start by determining if it is a fuel of spark prob..

[Jorrs]

if it does stuff up again, perhaps i will give a frusterated bang onto the tank !
also, it seemed to do it after i had given the car a bit of a run and revved her a bit,
sort of like putting your foot down, try to rev it and sumtimes it wouldnt let it rev past 2500, then 5500, then when u drivin it would stop you, like a fuel cut/boost cut, then today when i was waiting at intersection she decided she wanted to die a few times also..
i think it does run a bit rich when its cold but i think thats normal ?

[Jorrs]

anyone else ?

[skiddz]

my pulsar used to randomly die, missfire like a mofo, and not rev ie comming of the freeway, id notice every light come on and the powersteering go and i was like WTF? it was a combination of MAP and CAS sensors playing up and the fact its neeesan,

just a thought, check all the sensors are plugged in pull em all out and make sure there is good contact (easier said than dont the 20v plugs can be a bastard to get off)

seems like every one is having 20v troubles ATM .....coincedence?

[tricky]

also, it seemed to do it after i had given the car a bit of a run and revved her a bit,
[other stuff]
i think it does run a bit rich when its cold but i think thats normal ?

Sounds like a fuel pump to me. Could also indicate spark/sensors, but from the other symptoms above, I'd call the fuel pump as being inconsistent and about to die permanently.

Just for shits and giggles, and something to do fo five minutes, check out your leads too.

Yes, a bit of richness on cold start is normal. But not so much so that it emits black smoke!

Best of luck to ye

[Jorrs]

mmmmmmmmm ok, well today it didnt have the hesistation/fuel starvation but it did sometimes have a dodgy low idle, and once on my way home from work it died, but was easily restarted, i suppose i had better get under the car and have a look at the pump, is there any way to tell if its the pump without removing it ? will it shoot out a code ?

[tricky]

It would surprise me if there was a code for the pump...

Checked for vacuum leaks around the manifold? MAP or AFM?

[Jorrs]

ok today, drove it to work in morn fine no worrys, then later drove it to a work site, no worrys, then an hour or two later it did it when iwas trying to drive home, big bad flat spots, shuddering, dying on me..
fuel pump ? think might have go mechanic on mon.

[sideshow]

take cover off ecu

had a gze the other day with fuct ecu had stuffed capacitors and it made the car have no power and if i put foot on clutch it would stall

maybe the ecus are gettin to the age where they are starting to fuk up

im goin to try repair this one soon see if i can fix it

[Jorrs]

so you believe the ecu maybe having problems. if i remove the ecu how can i tell that the ecu is actually having problems or not ?

[30psi 4agte]

The only way to tell would to be to have it tested.


It almost sounds like a loose wire to a pump or something like that to be so intermitten.
Mechanic might be the go if you cant trace it further yourself.