Car keeps losing power and bringing on ecu light!

[robo999]

Hi all wondering if u could help me out, my car has been remapped and has got a viper induction kit fitted to it. but it keeps losing power and brings on the ecu light. ive took it bak to the dealers and they say all they can do is put it back to the standard map. i havent got a vag com cable or anything like that. was just wondering if any of u have had the same problem and how u sorted it. thanks alot for any help. rob

 

[james walker]

unplug the maf and drive your car for a short while, see if this cures it, if so the mafs knacked, common problem with oiled filters mate.

what warning light has come on?

 

[robo999]

oh and its a 02 1.8 2ov t cupra thanks.

 

[james walker]

also who mapped it?

 

[robo999]

err the yellow ECU light...

 

[james walker]

have you a handbook, look in there and post what the light means or post a picture mate

 

[robo999]

oh aint got a clue dint get no book or recipts with the car. the dealers tryinto get hold of em though.

 

[james walker]

how do you know its mapped then?

 

[robo999]

dealer told me it had definatly been mapped and my dads got a cupra 225 an it its almost as fast as that.

 

[james walker]

so the dealer should know who mapped it?

was the light on when you bought it?
what dealer?

try the maf thing, or reset the ecu and see if it comes back on mate (make sure you have radio code though)

 

[dav3]

When it looses power does it sound like it's miss firing. If so it could be a coil pack. But as above mate try and get pic of the warning light up.

 

[HallycupraR]

Wat about poss boost leak would that bring up the ecu light an take it into limp mode

 

[robo999]

no the light wasnt on when i bought it. it came on the same day.
errr gk seat in derby. they dont know cuz they havent got much info on the car.
they say they can jus map it back 2 standard because thats wat they think is the cause...

 

[robo999]

how do i get a pic up??

 

[james walker]

the map wouldnt directly cause this, unless it was a cowboy mapper....

could be a number of things.

does it run rough, jerky?

maf knackerd, coilpack, boost leak

try the ecu reset, then the maf, if not then it needs to go on adiagnostics machine to run up a fault code

 

[LEE69]

how do i get a pic up??

upload it to imageshack

 

[TAFFY aka beast]

i used to loose power over a period of driving and kept on bringin engine light on every 2 weeks. vag com said boost leak at D.V checked it and was a boost leak. check the hoses for slight tears.....

 

[cuprakyle]

iv had trouble this week and turned out that 2 coils were faulty, also had a cracked spark plug that was arking out, this brought the engine management light on and sent me into limp mode

 

[robo999]

yeah it runs really jerky. how do i go about resetting the ecu?

 

[james walker]

unplug the -tive battery connecton, leave for 30 mins, reconnect, ecu reset.... make sure you have the radio code because youll need it.