Problem with my gf's Fiesta , any idea?

[Neil79]

Yes its a fiesta , but still thought i'd ask here... On cruising its fine but any light touch of the peddle or general acceleration and the car just bucks , like its kangarooing. You can drive it but its very unstable

 

[BadgerBaiter]

How old is the beast?

 

[Overlag]

like no acceleration then lots? kinda like you are holding the brake down while accelerating?

Change the coil/spark plugs id say. fixed my problems (fiesta Mk6, 2003)

 

[Howard]

like no acceleration then lots? kinda like you are holding the brake down while accelerating?

Change the coil/spark plugs id say. fixed my problems (fiesta Mk6, 2003)

This. Sounds like it's misfiring.

 

[1CE]

My cousins does exactly the same, she has had it serviced, but still does it. It's funny to watch though, seeing her trying to pull away giving it the gas, then suddenly the power cuts back in! Quite annoying though I can imagine.

 

[jaybee]

Could be all number of things to do with fueling/electronics. Cheapest fix would be to start with spark plugs and HT leads and see if that improves things.

 

[Neil79]

Thanks everyone

 

[siztenboots]

check ends of vacuum pipes for splits and air leaks on the air inlet

is this always from cold ( ie. on choke ), or also when engine hot ? might be bad water temperature sensor , or stuck stat

 

[Firestar_3x]

What age of fiesta / engine is it?

 

[Neil79]

What age of fiesta / engine is it?

FIESTA LX
1996 ( N )
1.3

 

[Defcon5]

Id give the throttle body a good clean first off, then change the coil pack and plugs/leads

 

[Happy]

Just a bit off topic, but my old Yamaha PW80 did this, and even after being serviced etc it still did it

 

[Neil79]

Thanks for the replies , it was kinda funny being the passenger doing a chicken impression lol...