Important! : Vtr stalling/idle/rev problems, HELP

26th February 2011, 19:40

2002 MK2 1.6 VTR

Car is losing revs/stalling a couple of seconds after i turn it on, only way round this is unplugging the temperature sensor plug this lets me drive the car but fan is always on! Still has flat spots while driving and sounds lumpy and when i come to a stop the car will stall, i have to keep hitting the revs so i dont stall. Also noticed Ive had to top-up the radiator.

Parts replaced:
coil pack
spark plugs
injectors (From MK1 vtr)
map sensor
temperature sensor
Idle Control Valve (replaced one from a MK1 vtr didnt make a difference so kept mine)
throttle potentiometer (New, didnt make a difference so returned)
fuel filter

Also done a compression test on cylinders all working. Had a auto spark at it he couldnt find a problem, only thing that was strange he couldnt connect his computer via a 1.6 it wouldnt connect to ECU but it connected via 1.1 ecu. Unsure if this was just software problem on his end or my ECU is faulty? Iv tried everything i can think off apart from replacing ECU in case thats the problem.

Cleaned out the inlet manifold, checked all fuses/relays and cables/connectors.

Any ideas would be helpful thanks.

26th February 2011, 19:46

How much water are you having to top it up by?

Steve.

27th February 2011, 15:00

a lot i thoiught there was a leak or something but havnt found one. i keep checking level daily now. any ideas?

28th February 2011, 13:24

Bump.. Need some ideas guys!

28th February 2011, 21:06

bump??

1st March 2011, 20:59

Get your cooling system pressure checked,and open the radiator cap & smell the coolant what you don`t want to smell is petrol fumes because thats a sure sign the head gasket has gone.Are the heaters blowing hot?If not bleed the cooling system.

Steve.