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hi fellas as the title says my car goes into limp mode on the motorway at high speed.
does not doit around town or in low gears which is why im confused

has anyone had this before or knows of the cause

thanks

Is the car remapped, defapped or anything? Can you get access to Peugeot Planet?

Yes the car is remapped and defapped
Ive had new swirl diaphram on and cleaned the vnt turbo
And no i do not have access to peugeot planet

Right so im still having this issue,
im driving on the moterway put my foot down and after about 5 secs it goes in limp mode.
turn the car off for 15 secs and start again and all is fine till i do the same thing on the motorway.

It has got me really baffled as it never cuts out at full throttle in 1st 2nd or 3rd. only cuts out in 4th and 5th and thats on at igh speeds too

got the codes read today
p2035
p2045
one is overboost and one is underboost.

can anyone help me out at all

thanks

Vacuum leak. Potential boost leak as well.

Ive replaced all the vacuum pipes and simplified my vacuum system

ive also checked the turbo vanes which are fine and move freely

Remaining suspects are the actuators and electrovalves still remaining in the system.

Particularly, check the swirl actuator, the swirl EV and the turbo EV. Even if everything appears to work OK they can still have small leaks which will cause the overboosting at high load.

Under rare circumstances it could be the MAP sensor (pipe from the intercooler) but this is not very often the case.

Underboost could be a boost leak but is more likely to be a side-effect of the vacuum leak.

I could very likely be a worn injector. You need to get the faultcodes read out. You will not get anywhere be guessing.

the swirl actuator is brand new i just replaced it about 2 weeks ago

the next on my list the EVs and ill see if it helps

thanks

I'd better admit to being almost completely ignorant but... Isn't this what happened to CJ (I think it was) when he stuffed a generic map on his car?

Well im tempted to put the original map on my car and see how she runs

Have you checked the restrictors?

When my car had a P0238 last year, and a P0235 this year it was down to a blockage.

The restrictors are the 3 way and 2 way fittings on the vac pump and the servo - the hole is tiny and easy to block.

ive checked the restrictors and cleaned them out
so i know there clean

how would i know if its a faulty injector?