i have a sapphire cosworth all of a sudden the car has started spluttering when driving at a costant speed it wont idle it conks out spluttering VERY strong smell of fuel when your driving it hard or even speeding up slowly its fine. could it be a sensor etc any ideas woyuld be great thanks

 

Leave the engine idling and do the wiggle test on the sensor connectors, especially the CPS connector.
tabetha

 

it doesnt idle just conks out

 

Check the MAP sensor hose for splits and if it's even connected!

Martin

 

cheers al check it tomorrow when its light. the car was ok when a set out on ma run then got slightly worse and worse till it wouldnt idle and rus like a bag of wank

 

checked all everything seems to be fine got a new air temp sensor no diff really annoying anymore help would be good and helpfull thanks

 

Have you checked all fuel lines and fuel system ? Maybe you have a leak somewhere , check the injectors and FPR

 

Sounds like CTS or MAP sensor issues.

 

As per above did you check the MAP sensor pipe? If so as said it may even be the sensor itself, you can use the flash code system if your software supports it as this will show you if either are faulty.

Martin

 

the plugs were covered in petrol replaced the air sensor (brown) and it was covered in petrol 2. the lines are ok. its over fueling not being starved. checked the map sensor pipe its fine a changed the fuel reg as well

 

Im having this EXACT problem on my FRST at the moment soo will watch this closely

 

So we know the hose is ok but we don't know if the sensor in itself is ok? The air temperature sensor won't cause it to over fuel by that degree.

Another thing is make sure none of your injectors are constantly open, this has happened before thanks to the old wiring.

Martin

 

how would i find out if the injectors are staying on and how to cure it if its the wiring?. a dont know if the map sensor is working properly as a dont have another 1 to check it

 

As i say the flash code would tell you this, as to the injectors the easiest way would be to use a NOID light other than that is just determine whether they are pulsing or no as if one of them has shorted to ground it will be permantly open.

Martin

 

update on the fueling problem got new map sensor fitted it,s starting ok but it splutters when you rev it let it warm up and it still splutters am thinking of putting new plugs in it incase there all clogged up wae shite any ideas

 

fit new plugs and then look into coolant sensor, if it thinks it's -40 then it'll over fuel like mad.

 

what the blue sensor?

 

Thats probably the typical behavior as the software is programmed to act on the input from a 3 BAR MAP sensor which is different from the two, the blue sensor (CTS) is right at the rear left hand side of the head (Inlet) it's a little fiddly to get to.

Martin

 

when a bought the car 7months ago a replaced the blue cts. am trying to find out if a have the right 1 according to tms where a got it its a 3bar but diff colours if you check my other thred 3bar

 

used noid lights there all pulsing. sent 3bar back it was all black so bought 1 from woodford garage so its goin to be the correct 1 and another cts

 

fueling problem solved thank f*@k for that thanks for all your help