Car jolts when under load and doesnt rev above 3k!

[Lister1]

about a week ago i was driving then went to try and overtake someone and i wasnt able to rev above 3k, when i pressed the accelerator the car just starts jolting back and forth. It hasnt cut out at any time. I also dont have a cat. I have changed the throttle body map sensor still not able to rev. Please help any ideas would be helpful.

[saxoclarke]

going into limp mode for some reason ?

[Cam]

Sounds like lambda sensor to me.

[Lister1]

I thought it was limp mode, took it to a garage got a diagnostics and had any faults cleared. Took it out, still no change, brought it back plugged diagnostics back in no faults were showing...

[saxova]

coilpack if it's 'juddering'?

[ed-bradley]

coilpack if it's 'juddering'?

Was just about to suggest this..
coilpack may be breaking down under load.

[Lister1]

Not the coilpack, used my friends and still did the same thing.

[Lister1]

any more suggestions?

[stevo67]

I thought it was limp mode, took it to a garage got a diagnostics and had any faults cleared. Took it out, still no change, brought it back plugged diagnostics back in no faults were showing...

What fault codes were showing before you had them cleared?A multiple misfire(coil pack)would show up as po300.:drink:

[Lister1]

im not to sure the mechanic cleared them before i really got chance to see but they were all intermittent, and "nothing that would effect acceleration" the car revs like normal up to 3000 then revs past it when the pedals half way down bt when the pedal is all the way down back down to 3000.

[Lister1]

bumppp

[Lister1]

have changed map sensor, coilpack, and spark plugs. Would a faulty lambda cause these types of issues?

[OMGASAXO]

Yh mine judders cause of the old oxygen sensor not replaced it yet but its 100% the problem lol

[Lister1]

Is there any specific way to clean the lambda? Also is there a lamda sensor specfic to the VTS or will a VTR lambda suffice?

[Brendan]

Mines being doing the same for a while! Getting right on my tits. Shall have a look into the lambda sensor tomorrow and I'm currently swapping over the fuel filter (snapped one of the clips :err:)

[Lister1]

Yeh mate, im gunna be looking at my lambda tomz, ill let you know what happens

[OMGASAXO]

Don't tink you can clean lamba sensor just buy a new one got mine done now runs fine :) also does your engine management light come on sometimes? mine did this

[Lister1]

Found it out, was some how a large twist in the fuel line not allowing the fuel to the engine.