can anyone help iv got running issues with my saph cos 4x4 , from cold its fine but after bout 20mins of driving it it starts playing up if i slow down in gear it cuts out and at low revs it miss fires and hessitates then stalls it starts straight back up and ticks over fine but as soon as i pull away it starts playing up again ,on boost it runs fine and has no loss in power ,its driving me mad iv made sure all the bolts in the manifold are tight and none are missing ,iv also changed the water temp sensor and made sure the 3 big multi plugs on the bulk head are tight and sprayed up with wd40 .
has anybody got any ideas or come accross this problem any help would be much appreciated .

 

Paul how you doing mate? it's Martin (Flint grey Saph)

It sounds like an air leak to me or possibly a TPS issue, what does it idle at and does it "Hunt" at all?

Martin

 

check condition of the phase sensor and map sensor!

 

alright mart ,im all good cheers mate ,it idles at 9000 it dosent hunt at all not the usuall effects of a air leek ,but il have a look .

cheers alvyn il check them out .

 

In that case I would check the CPS connector which is known to cause problems "Wiggle test" I don't think however it's the phase or MAP normally when these two give problems they will run extremely rich (The phase wires are prone to corroding inside the dizzy or shorting out) I would also ask when the fuel filter was changed?

Martin

 

Have you worked on the car recently?

Not exactly the same but I had a problem like this and it was the map sensor but it would idle fine but as soon as you tried to pull away it would hesitate and stall.

 

cars all sorted changed the dizzy cap & rota arm and its been running sweet since sat morning cheep fix only £25