Need Help With A Cutting Out Problem

[Robz]

Hey Guys,

Everyone Been good help on here so far and got me through,

This time I have tryed so much and no luck so far.

My R33 drops idle intermitently and then cuts out, on idle or even driving.

The car seems to drive fine then jsut looses power and then drops to low idle and drops out, then comes back after bout 20 seconds.

I have replace :

1 Fuel filter

2 spark plugs

3 o2 sensor(with a new 3 inch dump pipe.)

I starting to run out of ideas.

I had a performance company lookat it and they new crap all. i won't mention the company name yet.

I thinking all that left maybe be fuel pump or somthing.

It only happens everynow and then, and is now happening more often.

I have minimal mods. basily increased boost the biggest.

Anyone have any ideas please let me know.

I to the point where i might have to get a machanice with a diagnistics system look at it.

Any help or ideas is a help.

It starting to cost me too much,

Thanks Rob

[gtst1976]

Sounds like what my old vl did. Ended up being the crank angle sensor. Just a stab in dark.

Edited March 21, 2006 by gtst1976

[Robz]

Sounds like what my old vl did. Ended up being the crank angle sensor. Just a stab in dark.

Thanks mate, any feed back good feed back,

Could be, wat the crank angle sensor do, and how much to fix that u recon ??

Thanks dude

Robz

[gtst1976]

The crank angle sensor tells the engine when to fire the spark plugs. Get that diagnostic done, it will show up on that if it is. Can't remember how much it cost, it was years ago.

[R33S2]

Same symtoms as a another car I had, took ages to find it as intermitant faults are hard to pin point, turned out to be the crank angle sensor too.

[J_Red33]

It's a distinct possibility, but I would have thought u'd have trouble throughout the rev range too if it was the CAS, however depending which 1 of the two reference signals is dying you may get away with a few extra revs. If the other dies though, u'll have nothing. Is it happening more when it's hot or on a hot day out of curiousity?

[Robz]

It's a distinct possibility, but I would have thought u'd have trouble throughout the rev range too if it was the CAS, however depending which 1 of the two reference signals is dying you may get away with a few extra revs. If the other dies though, u'll have nothing. Is it happening more when it's hot or on a hot day out of curiousity?

Hey Electro, well it mainly happens after a drive after it has warmed up, or more when i have given it to her, less likley to do it if i go real easy,

so yer coudl be wat u thinking, it has a los of power over normal rev ranges too, it not like it ment to be, that wat i getting at, i always throught it was fuel or air related, so i minimissed that and done wat i can, so looks like could be some sensor.

any more info/input is all good,

thanks mate

[J_Red33]

Starting to sound like a pretty good chance that's ur problem. Also if you shut it off for a few minutes to heat soak & then try to start it again but have trouble then I'd place very high odds on it.

It's usually under heat that they fail, & sometimes it is intermittent, electronics & heat are a real pain when combined.

If you're worried that you are going to waste ur money on a new sensor though, take it to a deacent auto elec that specialises in EFI technology & make sure he has all the equipement (IE occilloscope and diagnosics equipment to plug into the ECU) and make sure he know's what he's talking about. If he doesn't have any knowledge of Nissan CAS being a problem then run.

[ali-turko]

mate i got this proble on mt gtr, dose it get worse on hot wheather?

if so can u smell fuel in ur engine bay? if so get ur injectors checked out cause i found out i had a leaking injector

[r32_Gts4]

have u tried cleaning your AFM or replacing it. my car had the same problem. It was the AFM

[Robz]

hey guys,

thanks for all the input, i today have just taken to northside EFI at brendale, and he got all teh gear to test it, i told him wat i have done and explained wat u guys recon it could be.

hoping he will find and won't cost me the earth.

heaps hey

rob

[gtst1976]

Keep us posted, interested to see the problem.

[Robz]

Hye guys,

Problem at conclusion and all solved now.

My mechanice who did the best job( Ron at Northside EFI at Brendale)

found that is was the Air Flow Meter, and my fuel pump was playing up too, not holding presure.

So the main problem being teh AMF, i sorced one down second hand, from Driftking at Geebung for mad price. put on tonight and the car goes harder and better that before.

Thanks everyone for your help.

I have spend some money on it, but i got there, got a car full of new components now.

Cruise on boys

Thanks

Robz

[J_Red33]

Cool good to see u got it soughted out. I had forgotten that the AFM is a common problem with 33's. Reckon I'll be getting a Power FC & pissing off my AFM all together if it starts giving problems on mine. Will replace it with a MAP sensor.