had a few hesitation problems recently. boost seems to surge high and low.changed the plugs, oil, bov , checked hoses etc. problem is still there. driving me mad. another problem has showed itself recently too. i think its connected to the hesitation. at high revs in 3rd 4th and fifth the car cuts out and then restarts after the revs fall. any ideas. much appreciated.

i ve been told it could be a knock sensor but i cant find it

 

A guess if the car is cutting at high revs/boost then this would suggest fuel cut by the ecu. This happens on over boost. Maby good to say if you have any mods etc.


Neil

 

Try reset the ECU and also check fuel pump.

 

ive had that problem? for the last 6 months & asked on here!!
mine was as i was putting my foot down in any gear really!!
Changed:-
Turbo pipe ( which made some difference)
then it started again so i changed :-
plugs
fuel pump
leads


found out last month it was my coil packs £50 each & i needed (to be safe) all four.
yes i have a '94 classic

Baz

if this helps

 

coil packs £50 each that's very cheap if brand new..my local dealer want £68 + VAT each..

 

ive the same problem with my 93 wrx, its got a faulty coil pack but im going to change all four if i can source them second hand for resonable money...

 

I've got a set of secondhand coilpacks - PM me if you're interested

 

i may be interested in the coil packs if u still have them how old r they

 

i'll try the coil packs then. i reset the ecu when i changed the plugs.

the mods on my car are just a de cat and system. also got a bailey bov. thats it.

 

possible over boosting due to decat downpipe?