Engine problem? not sure what is wrong..

[llgsimpson]

Recently I have noticed that the car struggles really bad at 1200 - 1500rpm and 2000ish rpm, there is a loss of power and juddering really bad, passed this point it drives perfectly. the harder the right foot the worse the problem.

took the air filter out in case that was causing any troubles but it didnt make a difference.

the car has got the Ron98 map and has half a tank of 98 shell fuel.

any ideas what I should be looking at first

 

[llgsimpson]

Anyone?

 

[ForceIndia]

Lambda? Get a code reader on.

 

[Rs-172-cup]

Could be a number of things, Have you changed your plugs recently, injectors,coil pack?

 

[llgsimpson]

Y I could try a code reader but theres no eml on?
I've not tried replacing anything; wasn't sure what to try first

 

[kaz_quiksilver]

I've got a similar problem , if I hold it at 4/5k in 4th or 5th it jerks :/ almost like the ignition is cutting out

 

[Simon_16v]

Sounds like it could be misfiring?

 

[llgsimpson]

Today ive ordered a new coilpack and plugs too see if that stops it; interestingly it doesn't do it when the engine is cold?

 

[ForceIndia]

That sounds like lambda from memory. My ph1 did similar, felt like a misfire when warm, never happened when cold. Went through changing coil pack, leads etc made no difference. Popped code reader on and lambda came up as stores fault. No dash warning lights came up at any point.

 

[ForceIndia]

Does it start ok when warm?

 

[llgsimpson]

Yeaa no problem starting it at all, idles perfectly since RS Tuner Map, its just like a miss fire at the same rpm range ineach gear

 

[ForceIndia]

Exact same symptoms as my ph1.

 

[llgsimpson]

Hm, Ill put the code reader on it later and see if anything comes up.

 

[reedy107]

T.p.s ? Maybe. If it has flat spots then it could be this. But a code reader will point u in the right direction hopefully

 

[kaz_quiksilver]

Let us know what you get with the codes

 

[Big chris]

Maybe the remap, don't won't to scare you,but you have messed with things?

 

[llgsimpson]

Nope, remaped by the instructions provided, not had chance to get codes read yet

 

[llgsimpson]

Plugged in, no errors present or stored, however changed plugs and all seems okay and a hell of alot smoother!!! Never changed the plugs before but despite the manifold coming off being scary it was actually really easy!