Random stalling

[Kalgorn]

Once in a while, my car decides to stall on me. I've had it occur while doing two things, but it doesn't happen all the time.

 

1. Driving real slow after letting it idle for a while

2. Putting it in Neutral and coasting down hills

 

I've had it stall twice (that I can remember) while driving slow and letting it idle for a while. Once, I was sitting in a parking lot in Drive for a couple minutes. I put it in park, and it stalled. It also stalled while slowing down for a stop sign and slowly rolling through it right before I went to the parking lot I'm talking about.

 

The putting it in Neutral and coasting thing just happened again today on the way home from work. Was on a back road with some hills so I put it in Neutral and started coasting. All of a sudden it just stalled. Another time was at 70mph coasting down a hill in Neutral.

 

Clogged injectors? Bad fuel filter? Any ideas are appreciated.

[rudefyet]

my guess is the ICM

[Guest Anonymous]

Once in a while, my car decides to stall on me. ... It also stalled while slowing down for a stop sign.

Clogged injectors? Bad fuel filter? Any ideas are appreciated.

 

Mine has done that twice that I know of... right once i get to the red light it stalls out silently. Its gone undiagnosed.

[joey b]

Many earlier 3.4's do that. In 94 they changed the injectos and that cured the problem. Get some injectors from a 94-97. I replaced mine over a year ago and it hasn't done it since.

[Kalgorn]

Many earlier 3.4's do that. In 94 they changed the injectos and that cured the problem. Get some injectors from a 94-97. I replaced mine over a year ago and it hasn't done it since.

 

How tough is it to swap injectors? How much is involved?

[joey b]

remove plenum

remove injectors from fuel rail

Install new injectors

install plenum

 

You're supposed to replace injector O-rings everytime they are removed. Shoot 'em with some WD 40 and let em sit for a while while you loosen them by gently rotating the injector. I didn't replace my O-rings and I've reused them twice I believe. No leaking fuel either.

[GutlessSupreme]

That said, they're pretty cheap, and I'd replace them anyway for the piece of mind.

[Kalgorn]

Hmm... just thought of something today. Is the injectors problem a mileage thing or something that basically has happened since the car is new?

 

This only just started like a month ago but I am nearing 100k. Is that why?

[slick]

I'd do the injectors. You can have the upper plenum off in 30 minutes, and the fuel rail pulled in another 5 minutes. Seriously, if you were in a rush, you could do it in less than 1 hour. Just be sure to relieve all your fuel pressure before you pull your injectors. I made the mistake of not doing that once :oops:

[Kalgorn]

See, I don't know how to do that stuff. I can pull stuff apart and put it back together, but little stuff like relieving all the fuel pressure... I dunno how to do.

[digitaloutsider]

Take a screwdriver to schraider (wow, that's a butchered spelling) valve. Be sure to cover it with a paper or shop towel.

[slick]

Take a screwdriver to schraider (wow, that's a butchered spelling) valve. Be sure to cover it with a paper or shop towel.

 

Yep, that will work. Also, undo your fuel cap(i've always been told to do this).

[Kalgorn]

Where is this valve located? Sorry for all the questions. I'm still learning how to do most of this stuff on my own.

[digitaloutsider]

Look under the "TWIN DUAL CAM V6" cover. There'll be a valve covered up by a black (on my car) or silver (on some other cars) cap.