No Power Captain!, 74 914 2L runs for 10 minutes then dies ????? Options

[thompson-mfr]

Ok, I have been fighting some electrical gremlins.

74 2.0L FI 037 brain (now with 270 ohm ballast resistor)

The car runs great for 10-15 minutes then dies.

I tested the power relay and fuel pump relay and fuel pump itself and have power to all.

After it cools off for 3-5 minutes it will start again.

I have not checked for spark, but am guessing when it dies this is what is stopping.

What could this be??? ECU / Brain / Computer? I know they rarely fail

When I unplug my air intake sensor it has no affect on running. I thought maybe another sign of potentially a bad ecu / brain / computer. I have read it is supposed to richen the mixture.


Here is a pic of my car just because I like threads with pictures.

[7TPorsh]

not to hijack the thread but...I have this same typw of issue with my car and I am running Weber 40s.

If warm and car is idling, after about 5 minutes it begins to sputter, revs drop like it's going to die. If I let it go it corrects itself after 10 or 12 seconds; then fine for another 5 minutes.

Happens when I am driving to...feels like car misses a beat or two then carries on.

It started out of the blue. I have fuel at the carbs at 4psi...have a gauge.

So maybe same type problem even tho its carbs.

Now I am thinking coil or condenser is going bad.

Read somewhere here that the coil should be mounted vertical...mine is more horizontal.

Its a new coil with maybe a few hundred miles on it.