tyler120706

As per the title it also cutting out at junctions when driven. This ones really got me puzzled I can't see anything amiss usually I'd check the codes but I'm running a simtec. I've changed the alternator throttle position sensor and still no joy.

Can anyone help I'm really at my wits end

Turbotits

iTrader: (2)

It could be the map needs a little tweek. Have you cleaned the idle control valve?

Infected by sti

iTrader: (6)

Possibly bad earths? Have you checked them all and made sure they are all clean and have good contact to chassis, I think most cars "dip" a little on the revs when the fans kick in, I think its the power they demand when first kicking in.

tyler120706

The earths have been moved around and cleaned not cleaned the idle control valve out as as yet but I have swapped it for another unit and there was no difference. I know it's not the alternator I changed that also but it's gotta be electrical

kad 16v

My old X reg turbo 2000 used to do this, turned out the HKS SSQV dump valve wasn't sealing properly and car would stall when revs were low I.E when putting clutch down approaching a junction.

Tried cleaning idle control valve first but then was told that was pointless as its electronic.

Wasn't really to bothered with having the SSQV so I stripped it down and stretched the spring a bit, refitted and this cured the problem.

tyler120706

It's not just cutting at junctions the revs drop significantly when the cooling fans cut in

Turbotits

iTrader: (2)

has it always done this since the simtek was fitted?

tyler120706

No simtecs been fitted nearly a year this is a recent thing why what u thinking

Turbotits

iTrader: (2)

only theres a section in the map that picks the revs up a little when the engine is loaded with fans etc. If its been ok i dont think this is your problem. Any other work been done to the car?

tyler120706

Yes I changed the inlet manifold swapped everything over from the old one to the replacement

Turbotits

iTrader: (2)

Ah ok. Id guess it has an air leak. Did you use the same fuel pressure reg?

BoozyDave

iTrader: (8)

Theres a great specialist company around here that will be able to sort your problem out.

Take it to scoobyclinic

ossett2k2

iTrader: (9)

Holy double thread revival boozy man

Vxr2010

Could it just be a Maf not working as well , i had same sort of issue on a classic , try cleaning the Maf or do a swap with some one, I did not see the age of your car it's looks newer so Maf may not be cheap try cleaning it first