[T3] intermittent cutout

[James Lingenfelter]

I forgot to mention, every time I've had this happen, it first  
presents itself after a decent amount of highway/freeway driving.  
Usually at first I'd just feel slight hesitations going up  
overpasses, or up a hill.... sometimes so slight I'd at first mistake  
it for a choppy crosswind or something. I can tool around town in  
traffic indefinitely and not have a problem (not enough constant fuel  
pressure to completely smother the filter I guess). It does get  
progressively worse though, until it's just undriveable.

On Apr 15, 2011, at 5:47 PM, James Lingenfelter wrote:

>  If you shut off the car and let it sit for a while, will it fire  
> up and run normally for a while before cutting-out? If so, sounds  
> like it might be the infamous VW clogged fuel filter. Rust, or  
> whatever the culprit may be, gradually sucks on to the filter  
> element as you drive, eventually cutting off fuel flow. If you shut  
> off the car, even for just a few minutes sometimes, some of the  
> junk settles off the filter element, and it will often run a little  
> further before the same thing happens all over again. It gets MUCH  
> worse going uphill, because the more you're on the throttle, the  
> more apparent the fuel starvation becomes. I've had this problem on  
> EVERY air cooled VW I've ever owned at some point. Of course, I am  
> not knowledgeable at all about the FI systems, and I suppose there  
> could be a myriad of possible causes within the FI.
>  An additional note: I have had this happen before when the fuel  
> filters looked completely clean and like new; but upon removing the  
> filter, no fuel would drain out, and when I shook it up, suddenly  
> the fuel inside became RED with miniscule rust particles. Like a  
> red snow globe LOL.
>
> On Apr 15, 2011, at 3:34 PM, Chris Sheridan wrote:
>
>> Hi All,
>>
>> Last night I was coming home after driving the car all week as daily
>> commuter with no issues. was going about 55 and starting feeling and
>> intermittent cut out. Engine would just stop for a second then  
>> resume. No
>> backfires, no coughing, just a pause in operation. I made it home  
>> without
>> issue. This morning, driving to work, it began doing the same  
>> thing, except
>> more pronounced and more frequent to the point where I had to turn  
>> around
>> and drive home, with fairly consistent cutting out 60% of the time  
>> and
>> essentially limping home. It appearred to be much more pronounced  
>> when
>> heading up a hill as opposed to on level ground. It was very very  
>> similar to
>> the issue I had a couple weeks ago when I had hooked up a dormant  
>> gas line
>> to my cold start valve and supposedly was flooding the motor until I
>> disconnected it.
>>
>> It seems like a fuel delivery problem of some kind, either too  
>> much or too
>> little. I need to trouble shoot the issue tomorrow - any feedback  
>> would be
>> most welcome.
>>
>> Thanks,
>>
>> Chris Sheridan
>> 1970 Fastback Fuel Injected Automatic
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