Sudden loss of power, and then it came back??

[TimDoc 0]

Driving along the other day, car had been running for around 10 mins, had driven only about 2 miles, warm weather. Doing around 25mph and suddenly the car lost power, and the engine started running really lumpy! It then promptly stalled (with me in the right hand lane and nowhere to pull over to!). Turned the engine over with the ignition, and it would run like a bag of nails for a couple of mins and then stall again. By this time, getting beeped at lots so did something hideous and moved the car on a bit further and off the road using the starter motor. Popped the bonnet, and had a good look, no leaks, no loose connections, couldn't find a cause? Got back in the car after about 10mins and turned it over, it ran slightly lumpy and then smoothed out and went fine. No probs since.

 

Prior to this i had just replaced the MAF and the hall sensor (cam position sensor) and had run vagcom prior to replacing these with only error coded on the hall sensor showing.

 

Car has run smoothly since (2 weeks ago), just wondered if anyone had any bright ideas as to what this could have been and whether i need to check/do anything.

 

Open to all ideas/suggestion.

 

Tim

[fla 9]

Have you replaced the ecu relay 109?

[millerman 0]

ensured all connections on the parts replaced were ok also check the coil pak for signs of cracking ?

[TimDoc 0]

what does ecu relay 109 do?? Would it show up on VagCom if something was wrong with it??

[millerman 0]

its the ecu relay i beleve

[fla 9]

what does ecu relay 109 do?? Would it show up on VagCom if something was wrong with it??

 

basically it sends a signal to the ecu for the injectors and sparks. So if you're not getting either, then its dud. Its such a critical part but causes soooo much headache. And no its doesnt show up on VAGCOM unfortunately.

 

edit: sorry, millerman has already answered that one

[millerman 0]

not in the detail you did so no worries :)