Need some vital advice on my FRST (PLEASE)

CVH and Zetec tuning, suspension and braking mods.
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Need some vital advice on my FRST (PLEASE)

Postby TarmacTerrorist on Fri Jul 20, 2007 2:04 pm

I have recently fitted a fiesta rs turbo engine into my xr2i its running a T3 on standard boost standard injectors standard ofab ecu most things on it are standard and i am having fueling problems.

it will tick over sweat as a nut then a split second after you open the throttle the engine bogs down and pops some times. i did initialy try a T2 but that was the same i have come to the conclusion that it is under fuelling.

i am currently an apprentice mechanic my self and have checked (as far as i know) everything

any suggestions at all will be welcome

thanks :-? :-? :-? :-? :-?
Onto my 6th MK3 Fiesta and think this ones a keeper :P
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Postby Oranoco on Fri Jul 20, 2007 2:10 pm

Mine did something similar shortly after I got it and that turned out to be the Throttle Position Switch. Did you carry across the full FRST engine management?
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Postby TarmacTerrorist on Sun Jul 22, 2007 4:59 pm

no just ecu loom and map sensor is there a difference between the throttle position sensors from the 2i to the turbo??
Onto my 6th MK3 Fiesta and think this ones a keeper :P
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Postby jayrs on Wed Jul 25, 2007 12:57 pm

no, the TPS is the same.
could be a map sensor fault though.

what inlet manifold are you using? it might have a 2i air temp sensor in it
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Postby TarmacTerrorist on Sat Jul 28, 2007 8:20 pm

yes it has the 2i air temp sensor. woud that make a difference???
Onto my 6th MK3 Fiesta and think this ones a keeper :P
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Postby Oranoco on Sat Jul 28, 2007 8:35 pm

Yes it will make a big difference as the air(boost) being passed over it in a turbo application will be a lot higher
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Postby jayrs on Sat Jul 28, 2007 9:36 pm

as above mate, worong sensors give wrong reading
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