engine loses power

[tschechone]

Hi all,
My engine loses power during the ride. (sporadically and it happens in every gear)
I have the feeling that it works fine when the engine is cold. Also when I accelerate it works. But when the engine reach the normal temperature and I accelerate quickly the power is gone for a second, two, for a fraction of a second. (it varies). The Engine is still on but the throttle doesn’t react….
- Park plugs are ok
- Fuel pressure is ok
- The OBD plug didn’t react at the first run

Does someone have any suggestion? Might be a relay?

The follow information would help:
- Wiring diagram of the engine / fuel injection / ignition
- OBD pin assignment
- Where can I find the control unit? / relay?

I am grateful for every advice.

[RobP]

tschechone said:

Hi all,
My engine loses power during the ride. (sporadically and it happens in every gear)
I have the feeling that it works fine when the engine is cold. Also when I accelerate it works. But when the engine reach the normal temperature and I accelerate quickly the power is gone for a second, two, for a fraction of a second. (it varies). The Engine is still on but the throttle doesn’t react….
- Park plugs are ok
- Fuel pressure is ok
- The OBD plug didn’t react at the first run

Does someone have any suggestion? Might be a relay?

The follow information would help:
- Wiring diagram of the engine / fuel injection / ignition
- OBD pin assignment
- Where can I find the control unit? / relay?

I am grateful for every advice.

Sounds like you may have a low pressure fuel hose collapseing/constricting when the car is heat soaked. It's a fairly common issue. If you havn't done so already, replace the low pressure fuel hose (from tank to pump) with high pressure hose.

[tschechone]

That sounds very simple
Will have a look at it this weekend.
Thx so far!