Yes I know this has been discussed before, BUT. . yes a big BUT, I chased all the normal issues and still same result.
what it is ... 1991 Jetta ( German ) with 1.8 8V stock with Digifant and an Auto trans, 51,000 original miles.
Here we go...
Starts and will run for a moment of two then just dies. might rev to 2k but still dies, open throttle dies, don't throttle dies. :banghead:
what's been done or checked -
CPU swapped from a running car - running car runs with non-running cars CPU runs, Non-running car with known good CPU, result - see above.
Air flow meter swapped from running car, result - see above.
New blue coolant sensor, result - see above.
New in tank pump, result - see above.
fuel pressure at fuel rail - gauge is at 35-40 psi, just like running cars. result - see above
Swapped injectors to a set from a running car, results see above
vacuum lines all checked and replaced flexible line with silicone lines, result - see above.
grounds for engine, trans, CPU checked, result - see above.
Fuel pump relay checked, jumped relay out to get pressure reading and start, result - see above.
Ignition switch swapped and checked, result - see above.
Engine will run if I introduce a little brake cleaner to the intake, it will keep running as long as brake cleaner is flowing. Yes this means a fuel issue but where ??
any good ideas ??
David in NC
what it is ... 1991 Jetta ( German ) with 1.8 8V stock with Digifant and an Auto trans, 51,000 original miles.
Here we go...
Starts and will run for a moment of two then just dies. might rev to 2k but still dies, open throttle dies, don't throttle dies. :banghead:
what's been done or checked -
CPU swapped from a running car - running car runs with non-running cars CPU runs, Non-running car with known good CPU, result - see above.
Air flow meter swapped from running car, result - see above.
New blue coolant sensor, result - see above.
New in tank pump, result - see above.
fuel pressure at fuel rail - gauge is at 35-40 psi, just like running cars. result - see above
Swapped injectors to a set from a running car, results see above
vacuum lines all checked and replaced flexible line with silicone lines, result - see above.
grounds for engine, trans, CPU checked, result - see above.
Fuel pump relay checked, jumped relay out to get pressure reading and start, result - see above.
Ignition switch swapped and checked, result - see above.
Engine will run if I introduce a little brake cleaner to the intake, it will keep running as long as brake cleaner is flowing. Yes this means a fuel issue but where ??
any good ideas ??
David in NC