Check connections at the AFM? Perhaps there is a problem? If one
disconnects the AFM connector, I have seen similar symptoms. Although it
does sound like fuel pressure regulator is cutting off fuel flow. Has it
warmed up, or not running long enough to do so?
Jon

On 2/27/2015 3:10 PM, Kevin Duvernay wrote:
> All,
>
> Trying to help a buddy out with a strange issue. His 87 2.1 westy wont stay
> running longer than a minute or two. It runs pretty good, then slowly
> starts to hesitate and eventually die after a minute or two. We can then
> immediately start it right back up and repeat. very strange, we are stumped.
>
> What we have already tried:
> Grounds are clean
> Temp sensors and oil pressure sensors( new o2 sensor going in this weekend)
> entire ignition system is good (timing, coil, distributor, relays, etc.).
> fuel pressure is good. All injectors appear to be functioning good.
> AFM is good
> throttle switch is adjusted good
> idle control valve and module are both good
> ECU is good
> the purple and white vacuum lines appear to both be leak free
>
> With fuel and spark both good, it must be some kind of electronic issue or
> air leak, yeah? We are stumped... looking for any ideas.
> Kevin