[SyCK]

Looking for a little insight or hopefully someone having already experienced this to point me at some things to check.

Lately the car has been having an intermittent dying problem. Some nights I can go without a problem, some nights it hits me a couple times. It only seems to happen after I have stopped, like at a traffic light, and dies once I have tried to accelerate. The car then has to sit for a few minutes before it will turn over again.

Initially I attributed it to a bad FCD since at the time I was throwing a TPS error code (and the dying problem seemed to be part of this error code malfunction) so I rewired that. Then it still persisted so I bought a BCC and soldered everything and it seemed to be ok... But again it happened. So after thinking about it, I recently put on a SPAL pusher fan to help with cooling. After consideration per the problem I *thought* that since it was dying in traffic after a decent drive (like when the fan would be coming on due to the temp switch for it) and with the big stereo system I have... I though the draw from the alternator at that point was making the car stall. Seemed logical. So I cut the power wire on the fan and had driven it twice since with no problems. Well, today I decide to take the car to work (which I never do) and all the way here (40 miles) is fine. Then I take it out for lunch and run some errands and I'll be damned if the POS didn't stall on me again. I am stumped at what it is.

Now, I have been throwing a code 25 (Lean A/F malfunction) off and on but I didn't think that the o2 readings would cause the car to die...intermittently leaving from a stop. Am I wrong in thinking that? Anyone have any ideas on what to check besides replacing the o2?

I know of other people throwing this code with no ill effect which is why I wrote it off as not being the problem.

 

[TommyR1]

dood... OS sensor mite be doing it.. after the car is on... it mite run rich, contrary to the reading and flooding ur system.. bad gas milage perhaps?

when u turn the engine.. does it turn slowly or quickly? quickly means good battery.. turn no start, smell gas? yes engine not firing plugs...no... engine not giving gas.... ... "could be o2 sensor"
... otherwise, check ur intake hoses pre and post turbo.. one slipping off could cause the engine to die... also.. check the MAF ... sometimes with aftermarket drop-in panels they leak that reghargin oil onto the MAF... and kaput.. fked up car cuz of MAF sensor... good luck

 

[Philly Single]

Do you have access to a wideband / FJO? I'm not sure if it is your O2 sensor - however, I can tell you that I know the car can and will die from an initial tip-in of throttle due to going extremely lean.

 

[SyCK]

Do you have access to a wideband / FJO? I'm not sure if it is your O2 sensor - however, I can tell you that I know the car can and will die from an initial tip-in of throttle due to going extremely lean.

I have a wideband on the car and that is reading fine. The car is abit rich at idle, around 10.5-11 or so. Cruising it is anywhere from 12.5-14. I know when the car dies and I am trying to restart it, I see the wideband showing 25 as I turn the key to get it going. But at the time it stalls it isn't reading anything abnormal. I'm stumped but I guess all I can do is replace the factory o2 and see if that solves it. Just didn't want to spend the extra coin before christmas.

And Tommy - I know it isn't the hoses, those are all tightened down with t-bolt clamps. I've had the car blow them off plenty of times and this is not the same experience. I'm also running a VPC so I have no MAF.

Thanks for the replies guys

Sean-

 

[T66_rice]

im having the same problem ,except i dont have a wideband

 

[efini/supra]

Is a bad 02 sensor really a big deal? I wonder this because i think my 02 might be bad also..


Mike

 

[SyCK]

After trial and error replacing shit all the problems I was experiencing ended up being a bad Igniter.

When I had an O2 go bad before I just pretty much got shitty gas mileage and a little crappier performance out of the car. Other than that it wasn't anything major.