hesitation/misfire under partial load

[fergy7197]

Recently bought a 1997 vts, when driving it down to get it mot'd today, noticed at part throttle it would feel as if there was a slight misfire but as soon as the foot went down, it seemed to be ok.

relatively new to the vts engine, have been a rover man for a few years(stop laughing now plese!!) lol.

any ideas/suggestions?

its getting a good service when I get it back, feel it needs it maybe.

[hooheehaa]

Would check, leads, plugs...also maybe worth checking fuel filters..hope this helps

[JamesR]

Check the coilpack aswell as above mate :y:

[fergy7197]

Check the coilpack aswell as above mate :y:

what would i be checking it for, damage, splits etc? dampness?

[Andy_K]

Sounds a bit like the coil pack tbh. If you have a mate with a vts, borrow their coil pack and try it on yours for a start. Could also be worn spark plugs if they havn't been changed for a while

[fergy7197]

how much are coil packs? wheres the best place to get them? got some sparkplugs, will try it tomorrow to rule it out

[fergy7197]

how much are coil packs? wheres the best place to get them? got some sparkplugs, will try it tomorrow to rule it out

[hooheehaa]

If the leads look old and worn change plugs and leads first to eliminate the most basic and cheap option.

[Andy_K]

Try ebay for a 2nd hand one. Sometimes there are new ones on there as well. Motor factors will usually be able to get hold of them as well for you. Citroen as a last resort (as they will cost a fortune from there)

Cant remember how much they are - not bought one for ages. Have a feeling I've paid between £50 and £75 in the past for new ones

[Andy_K]

If the leads look old and worn change plugs and leads first to eliminate the most basic and cheap option.

No leads on a vts. they run a coil pack instead

[fergy7197]

No leads on a vts. they run a coil pack instead

beat me to it!!:p

service, plugs, then coilpack maybe.... on the to do list :y:

[wm10001]

does the coil pack stop working straight away or does it get worse and worse

[fergy7197]

bit of an update on this...

the car is now cutting out on idle most of the time, and suffers from a random loss of power till it cuts out.

would a hole in the cat cause this? lambda picking up more oxygen than normal and fecking with the fuelling?

gave my ICV a wee clean today(new one on order from egay!), seems to have helped a bit, but still does it.

New plugs are also in.

all thats left could be the coil packs themselves.

time shall tell!

p.s. there is a niggle in the back of my head telling me to check the map line. would it cause these sorts of probs?

cheers in advance chaps :p

[fergy7197]

any ideas?

[ryanmt]

if its at a fixed throttle range its possibly the TPS (throttle position sensor) throwing its toys out the pram.

Failing that, map sensor or coil pack

[scot-ish]

is say map sensor not reading correctly thorugh the range, but on full throttle its reading correctly

[LeeM]

where is the map sensor ryan?

[ryanmt]

left side of the inlet

[LeeM]

oh yeah i know which one it is.
looking at the tps it cant really be cleaned can it, only replaced?